@article {1476,
	title = {Synthesis and reactivity of side-on-bound dinitrogen metal complexes},
	journal = {Organometallics},
	volume = {25},
	number = {7},
	year = {2006},
	note = {ISI Document Delivery No.: 025SVTimes Cited: 59Cited Reference Count: 107},
	month = {Mar},
	pages = {1530-1543},
	type = {Review},
	abstract = {An up-to-date account of the Synthesis of side-on-bound dinitrogen complexes of the lanthanides, the actinides, and the transition elements over the past 40 years is given. In addition, the reactivity of these derivatives is summarized. There have been many complicated multinuclear Cluster complexes with the N-2 imbedded in a fashion that corresponds to side-on N-2. There have been some suggestions, as early as 1960. that side-on dinitrogen complexes should exist. However, a key date in this area is 1988, which is when the disamarium Complex (CP*Sm-2)(2)(mu-eta(2):eta(2)-N-2) was reported. It is this date that is used in this account as the real starting point for the area of side-on dinitrogen coordination chemistry. After 1988, side-on dinitrogen complexes are reviewed from the point of view of Synthesis, structure (N-N bond lengths, where applicable), and reactivity. What becomes apparent is that while there have been many new side-on dinitrogen complexes discovered recently, investigations into their reactivity patterns are still at a primitive stage.},
	keywords = {BRIDGING N-2 UNIT, COORDINATED DINITROGEN, DINUCLEAR TANTALUM COMPLEX, ELECTRONIC-STRUCTURE, END-ON, MOLECULAR NITROGEN, NICKEL-LITHIUM COMPLEX, RAY CRYSTAL-STRUCTURE, REDUCTION SYSTEM, X-RAY},
	isbn = {0276-7333},
	url = {<Go to ISI>://000236288100002},
	author = {MacLachlan, E. A. and Fryzuk,Michael D.}
}
@article {1251,
	title = {Addition of primary and secondary phosphines to dinuclear tantalum hydrides: Synthesis of phosphides and phosphinidenes via P-H bond activation},
	journal = {Organometallics},
	volume = {24},
	number = {7},
	year = {2005},
	note = {ISI Document Delivery No.: 909LJTimes Cited: 11Cited Reference Count: 42},
	month = {Mar},
	pages = {1419-1427},
	type = {Article},
	abstract = {The dinuclear complex ((RPh)[NPN]Ta)(2)(mu-H)(4) (where (RPh)[NPN] = [RP(CH2SiMe2NPh)(2)] and R = Ph, Cy) shows remarkable reactivity with molecular nitrogen, producing the side-on end-on bound dinitrogen complex ((RPh)[NPN]Ta)(2)(mu-eta(1):eta(2)-N-2)(mu-H)(2.) This tantalum tetrahydride also promotes other small molecule activation. Addition of secondary phosphines HPR{\textquoteright}(2) (R{\textquoteright} = Ph, Cy) to ((RPh)[NPN]Ta)(2)(mu-H)(4) accesses trihydride phosphide systems ((RPh)[NPN]Ta)(2)(mu-H)(3)(mu-PR{\textquoteright}(2)). Addition of primary phosphines H2PR" (R" = Cy, Ad) gives bridging phosphinidene tantalum complexes ((RPh)[NPN]Ta)(2)(mu-H)(2)(mu-PR"). Molecular structures as determined by X-ray crystallography for the complexes ((PhPh) [NPN]Ta)(2)(mu-H)(3)(mu-PCy2) and ((CyPh)[NPN]Ta)(2)(mu-H)(2)(mu 1-PAd) are presented. Isotopic labeling studies offer mechanistic insights into the reactivity of this tetrahydride system. Reaction Of Cy2PH with ((CyPh)[NPN]Ta)(2)(mu-D)(4), for instance, gives solely the monchydride dideuteride complex ((CyPh)[NPN]Ta)(2)(Y-H)(mu-D)(2)(mu-PCy2). This labeling study indicates that D-2 loss forms the reactive species, ((CyPh) [NPN]Ta)(2)(mu-D)(2), which promotes small molecule activation. Addition of CyPH2 to ((CyPh)[NPN]Ta)(2)(AtD)(4) gives a series of isotopomers, with an average composition of 0.67 H and 1.33 D, supporting a 1,2-H-2 elimination step to form the tantalum phosphinidenes. These results are tied into the general reactivity of ((RPh)[NPN]Ta)(2)(mu-H)(4).},
	keywords = {BRIDGING N-2 UNIT, CP-ASTERISK, DIAMIDOPHOSPHINE COMPLEXES, DINITROGEN LIGAND, EARLY TRANSITION-METALS, END-ON, IMIDE FORMATION, MOLECULAR-STRUCTURES, RAY CRYSTAL-STRUCTURE, SIDE-ON},
	isbn = {0276-7333},
	url = {<Go to ISI>://000227861100010},
	author = {Shaver, M. P. and Fryzuk,Michael D.}
}
@article {707,
	title = {Solution behavior and structural diversity of bis(dialkylphosphino)methane complexes of palladium},
	journal = {Inorganic Chemistry},
	volume = {42},
	number = {13},
	year = {2003},
	note = {ISI Document Delivery No.: 697LTTimes Cited: 17Cited Reference Count: 54},
	month = {Jun},
	pages = {4117-4126},
	type = {Article},
	abstract = {The preparation of dipalladium complexes containing sterically nondemanding diphosphine (P-P) ligands of the type R2PCH2PR2 where R = Me (dmpm) or Et (depm) is reported. Variable-temperature H-1 NMR spectra of the Pd-2(1) complexes Pd2X2(dMPM)(2) (X = Cl, Br, or I; the P-P ligands in the Pd-2 complexes are always bridged, but for convenience, the mu-symbol is omitted) show the complexes to be fluxional in solution, the barriers to a ring-flipping process being DeltaGdouble dagger = 37.9, 39.0, and 43.2 +/- 0.9 kJ mol(-1) for the chloro, bromo, and iodo complexes, respectively. Treatment of Pd2X2(P-P)(2) (X = Cl or Br) with X-2 generates the stable, face-to-face Pd-2(II) derivatives trans-Pd2X4(P-P)(2), while oxidation of Pd2I2(P-P)(2) complexes with I-2 generates a new type of symmetrically di-iodo-bridged, five-coordinate complexes Pd2I2(mu-I)(2)(dmpm)(2) and Pd2I2(mu-I)(2)(depm)(2). The molecular crystal structures of four dipalladium(II) complexes are described: trans-Pd2Cl4(dmpm)(2).2CHCl(3), trans-Pd2Br4(dmpm)(2), trans-Pd2Cl4(depm)(2), and Pd2I2(mu-I)(2)(dmpm)(2). Solution NMR and UV-vis absorption spectra are consistent with the solid-state structures determined by X-ray diffraction. The stability of the dimeric Pd(II) complexes is attributed primarily to ligand steric factors.},
	keywords = {bis(diphenylphosphino)methane, DIMERIC COMPLEXES, DPM, HYDROGEN-SULFIDE, LIGANDS, MECHANISTIC ASPECTS, METAL-METAL BONDS, MOLECULAR-STRUCTURE, RAY CRYSTAL-STRUCTURE, RHODIUM(I)},
	isbn = {0020-1669},
	url = {<Go to ISI>://000183945100023},
	author = {Pamplin, C. B. and Rettig, S. J. and Patrick, B. O. and James, Brian R.}
}
@article {345,
	title = {Synthesis and self-assembly of novel tetra- and hexapyrroles containing dipyrrins linked by a sulfur bridge at the beta-position},
	journal = {Tetrahedron Letters},
	volume = {43},
	number = {46},
	year = {2002},
	note = {ISI Document Delivery No.: 608QATimes Cited: 23Cited Reference Count: 20},
	month = {Nov},
	pages = {8413-8416},
	type = {Article},
	abstract = {Novel ligands containing two dipyrrin units linked by a sulfur bridge at the beta-position have been synthesized and used to prepare double-stranded helical metal complexes. A structure was confirmed by X-ray analysis. (C) 2002 Elsevier Science Ltd. All rights reserved.},
	keywords = {ARCHITECTURE, assembly, bis(dipyrrin-3-yl) sulfides, CU-I, dipyrrins, DIPYRROMETHENE LIGANDS, helicates, hexapyrrin, LEAD(II) COMPLEXES, metal complexes, RAY CRYSTAL-STRUCTURE, self},
	isbn = {0040-4039},
	url = {<Go to ISI>://000178857100048},
	author = {Chen, Q. Q. and Zhang, Y. J. and Dolphin, D.}
}
@article {5232,
	title = {Chemistry of Re with N,N {\textquoteright}-bis(2-pyridylmethyl)ethylenediamine (H(2)pmen): Hydrolysis, dehydrogenation, and ternary complexes},
	journal = {Inorganic Chemistry},
	volume = {40},
	number = {9},
	year = {2001},
	note = {ISI Document Delivery No.: 423DBTimes Cited: 13Cited Reference Count: 49},
	month = {Apr},
	pages = {2005-2010},
	type = {Article},
	abstract = {A number of Re complexes with N,N {\textquoteright} -bis(2-pyridylmethyl)ethylenediamine (H(2)pmen) have been made from [NH4]-[ReO4]. . [ReOCl(2)H(2)pmen)]Cl, [ReOCl(Hpmen)][ReO4], and [ReO2(H(2)pmen)] [ReO4] are related by hydrolysis/HCl substitution [ReOCl(Hpmen)] [ReO4] was structurally characterized and found to contain a water-stable amido-Re bend. Dehydrogenation of the N-donor ligand from each amine to imine with concomitant two-electron reduction of the Re center occurs readily in these systems. With suitable 3-hydroxy-4-pyrones, ternary complexes such as [(ReCl)-Cl-III(ma)(C14H14N4)][ReO4]. CH3OH, 5, were made from [NH4][ReO4], H(2)pmen . 4HCl and pyrones in one-pot syntheses. 5, a seven-coordinate Re-III complex, was structurally characterized.},
	keywords = {aluminum, CHELATE COMPLEXES, COORDINATION-COMPOUNDS, gallium, LIGANDS, RADIOPHARMACEUTICALS, RAY CRYSTAL-STRUCTURE, Rhenium complexes, technetium, TRIS(2-PYRIDYLMETHYL)AMINE},
	isbn = {0020-1669},
	url = {<Go to ISI>://000168159200007},
	author = {Xu, L. and Pierreroy, J. and Patrick, B. O. and Orvig, Chris}
}
@article {5076,
	title = {Reaction of [P2N2]Ta=CH2(Me) with ethylene: Synthesis of [P2N2]Ta(C2H4)Et, a neutral species with a beta-agostic ethyl group in equilibrium with an alpha-agostic ethyl group ([P2N2] = PhP(CH2SiMe2NSiMe2CH2)(2)PPh)},
	journal = {Journal of the American Chemical Society},
	volume = {123},
	number = {8},
	year = {2001},
	note = {ISI Document Delivery No.: 405LXTimes Cited: 26Cited Reference Count: 65},
	month = {Feb},
	pages = {1602-1612},
	type = {Article},
	abstract = {The photolysis of [P2N2]TaMe3 ([P2N2] = PhP(CH2SiMe2NSiMe2CH2)(2)PPh) produces [P2N2]Ta=CH2(Me) as the major product. The thermally unstable methylidene complex decomposes in solution in the absence of trapping agents to unidentified products. However, in the presence of ethylene [P2N2]Ta=CH2(Me) is slowly converted to [P2N2]Ta(C2H4)Et, with [P2N2]Ta(C2H4)Me observed as a minor product. A mechanistic study suggests that the formation of [P2N2]Ta(C2H4)Et results from the trapping of [P2N2]TaEt, formed by the migratory insertion of the methylene moiety into the tantalum-methyl bond. The minor product, [P2N2]Ta(C2H4)Me, forms from the decomposition of a tantalacyclobutane resulting from the addition of ethylene to [P2N2]Ta=CH2(Me) and is accompanied by the production of an equivalent of propylene. Pure [P2N2]Ta(C2H4)Et can be synthesized by hydrogenation of [P2N2]TaMe3 in the presence of PMe3, followed by the reaction bf ethylene with the resulting trihydride. Crystallographic and NMR data indicate the presence of a beta -agostic interaction between the ethyl group and tantalum center in [P2N2]Ta(C2H4)Et. Partially deuterated analogues of [P2N2]Ta(C2H4)Et show a large isotopic perturbation of resonance for both the beta -protons and the alpha -protons of the ethyl group, indicative of an equilibrium between a beta -agostic and an a-agostic interaction for the ethyl group in solution. An EXSY spectrum demonstrates that an additional fluxional process occurs that exchanges all of the H-1 environments of the ethyl and ethylene ligands. The mechanism of this exchange is believed to involve the direct transfer of the beta -agostic hydrogen atom from the ethyl group to the ethylene ligand, via the so-called beta -hydrogen transfer process.},
	keywords = {ALKYL ALKENE, C-H, CHAIN PROPAGATION, COMPLEXES, METAL-CARBON BONDS, MIGRATORY INSERTION, MOLECULAR-STRUCTURES, NUCLEAR-MAGNETIC-RESONANCE, OLEFIN, POLYMERIZATION, RAY CRYSTAL-STRUCTURE, TRANSITION-METALS},
	isbn = {0002-7863},
	url = {<Go to ISI>://000167162100008},
	author = {Fryzuk,Michael D. and Johnson, S. A. and Rettig, S. J.}
}
@article {4838,
	title = {Cr(NAr)(O)(NPr2i)(Ar): a strongly-bent monoimido complex resulting from nitrosyl ligand cleavage},
	journal = {Chemical Communications},
	number = {18},
	year = {2000},
	note = {ISI Document Delivery No.: 352VQTimes Cited: 10Cited Reference Count: 26},
	pages = {1809-1810},
	type = {Article},
	abstract = {The molecular structure of Cr(NAr)(O)(NPr2i)(Ar) (Ar = 2-MeC6H4) is analysed by X-ray crystallographic and density functional theoretical techniques.},
	keywords = {BIS(IMIDO) COMPLEXES, CATALYSTS, CHROMIUM(VI), CHROMIUM-(VI), IMIDO LIGAND, MOLYBDENUM(VI), PRECURSORS, RAY CRYSTAL-STRUCTURE, REACTIVITY},
	isbn = {1359-7345},
	url = {<Go to ISI>://000089238900051},
	author = {Jandciu, E. W. and Legzdins,Peter and McNeil, W. S. and Patrick, B. O. and Smith, K. M.}
}
@article {4953,
	title = {Double-helical dinuclear bis(dipyrromethene) complexes formed by self-assembly},
	journal = {Journal of Organic Chemistry},
	volume = {65},
	number = {23},
	year = {2000},
	note = {ISI Document Delivery No.: 377BDTimes Cited: 55Cited Reference Count: 37},
	month = {Nov},
	pages = {7870-7877},
	type = {Article},
	abstract = {Bis(dipyrromethene) ligands linked by an alkyl spacer between beta and beta{\textquoteright} positions are shown to give helical dimers or monomers, dependent upon the length of the alkyl linker, upon complexation. Ligands consisting of methylene, ethylene, and propylene linkers -(CH2)(n)- (n = 1, 2, and 3) give helical dimers, while longer linking chains (n = 4, 5, or 6) give monomers or mixtures of dimers and monomers. X-ray crystal structures of the dimeric zinc complexes (n = 1, 2, and 3) reveal that the angles between dipyrromethene planes and the extent of helicity in the complexes differ as the length of the linker varies. The extent of helicity was assessed and found to be dependent upon the length and, specifically, the conformational preferences of the alkyl spacer unit. The presence of an ethylene linker gave complexes of greatest helicity. The use of a methylene spacer gave less helical structures upon complexation, while propylene spacers gave only slightly helical complexes. Our studies identify the crucial importance that the conformational preferences of the beta-beta{\textquoteright} alkyl spacer group plays in the coordination algorithm of self-assembly to form dipyrromethene based complexes.},
	keywords = {ARCHITECTURE, CU-I, LEAD(II) COMPLEXES, porphyrins, RAY CRYSTAL-STRUCTURE},
	isbn = {0022-3263},
	url = {<Go to ISI>://000165491300024},
	author = {Thompson, A. and Dolphin, D.}
}
@article {4807,
	title = {Synthesis, characterization, and reactivity of scandium chloro, alkyl, aryl, and borohydride complexes, Sc(eta(5)-C5H5)R[N(SiMe2CH2P(i)Pr-2)(2)] (R = Cl, Me, Ph, and BH4)},
	journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie},
	volume = {78},
	number = {7},
	year = {2000},
	note = {ISI Document Delivery No.: 343HDTimes Cited: 16Cited Reference Count: 44},
	month = {Jul},
	pages = {1003-1012},
	type = {Article},
	abstract = {{Reaction of ScCl2(THF)[N((SiMe2CH2PPr2)-Pr-i)(2)] with NaCp(DME) leads to Sc(eta(5)-C5H5)Cl[N((SiMe2CH2PPr2)-Pr-i)(2)] (1). The X-ray crystal structure shows the scandium centre to reside in a square pyramidal environment with the [N((SiMe2CH2PPr2)-Pr-i)(2)] - ligand bound in a pseudo-meridional fashion. The H-1 NMR spectrum is consistent with a C-s symmetric structure in solution. Metathesis of the chloride ligand with RLi (R = Me, Ph, BH4) yields the five-coordinate species Sc(eta(5)-C5H5)R[N((SiMe2CH2PPr2)-Pr-i)(2)]. Phenyl 3 and borohydride 4 are isolated as crystalline solids, while methyl 2 resisted crystallization. 2-4 exhibit H-1 NMR spectra consistent with C-s symmetric solution structures. Sc(eta(5)-C5H5)Ph[N((SiMe2CH2PPr2)-Pr-i)(2)] (3) was characterized in the solid state and found to have a similar geometry to that of the parent chloride. Reaction of Sc(eta(5)-C5H5)Me[N((SiMe2CH2PPr2)-Pr-i)(2)] (2) with NH2R (R = Ph, Bu-t) yields the amides Sc(eta(5)-C5H5)NHPh[N((SiMe2CH2PPr2)-Pr-i)(2)] (5) and Sc(eta(5)-C5H5)(NHBu)-Bu-t- [N((SiMe2CH2PPr2)-Pr-i)(2)] (6) via sigma-bond metathesis routes; these reactions are accompanied by a competing reaction at the scandium-amide bond to produce the protonated ligand, HN((SiMe2CH2PPr2)-Pr-i)(2) 5 and 6 are also produced by salt-elimination from the chloride 1 and LiNHR (R = Ph, Bu-t). Sc(eta(5)-C5H5)(BH4)[N((SiMe2CH2PPr2)-Pr-i)(2)] (4) reacts with PMe3 to produce the putative hydride, Sc(eta(5)-C5H5)H[N((SiMe2CH2PPr2)-Pr-i)(2)] (7); this species was identified in solution. An equilibrium between 4, PMe3, 7, and PMe3,BH3 exists which greatly favors the starting scandium-borohydride. Crystals of Sc(eta(5)-C5H5)Cl[N((SiMe2CH2PPr2)-Pr-i)(2)] (1) are monoclinic},
	keywords = {ALKANE ELIMINATION, BETA-HYDROGEN, borohydride, CHAIN, CHEMISTRY, DERIVATIVES, hydride, LANTHANIDE, PERMETHYLSCANDOCENE, PROPAGATION, RAY CRYSTAL-STRUCTURE, SCANDIUM, sigma-bond metathesis, TETRAHYDROBORATE COMPLEXES, ZIEGLER-NATTA POLYMERIZATION},
	isbn = {0008-4042},
	url = {<Go to ISI>://000088695300009},
	author = {Fryzuk,Michael D. and Giesbrecht, G. R. and Rettig, S. J.}
}
@article {4705,
	title = {Kinetic and mechanistic aspects of sulfur recovery from Pd2I2(mu-S)(mu-dpm)(2) using I-2 and structures of Pd(II) complexes with the chelated monosulfide of dpm},
	journal = {Inorganic Chemistry},
	volume = {38},
	number = {9},
	year = {1999},
	note = {ISI Document Delivery No.: 194LGTimes Cited: 21Cited Reference Count: 46},
	month = {May},
	pages = {2143-2149},
	type = {Article},
	abstract = {The Pd2X2(mu-S)(dpm)(2) complexes (2) (X = I, Br) react with halogens to yield PdX2(dpm) (3) and elemental sulfur. Kinetic and mechanistic studies on the X = I system in CHCl3 reveal that the reaction proceeds via addition of I-2 to give Pd2I4(dpm)(2) (4c), which then undergoes unimolecular decomposition to generate PdI2(dpm) (3c); the liberated sulfur concatenates to form elemental Ss The addition reaction is in the stopped-flow time regime and is first-order in both 2c and I-2, with Delta H-double dagger = 32 +/- 1 kJ mol-l and Delta S-double dagger = -91 +/- 3 J K-1 mol(-1). The slower decomposition reaction of 4c is first order in 4c, with Delta H-double dagger. = 80 +/- kJ mol(-1) and Delta S-double dagger = -26 +/- 3 J K-1 mol(-1). Byproduct PdX2(dpm(S)) (5) [dpm(S) = Ph2PCH2P(S)Ph-2] also forms under some conditions via reaction of 3 with an S, species (n < 8). Complexes 5 (X = Cl (a), Br (b), I(c)) were also synthesized directly, and the structure of the 5c species, as well as of [Pd(dpm(S))(2)]Cl-2, were determined by X-ray analyses that reveal the envelope configuration of the five-membered Pd-PPh2CH2P(S)Ph-2 chelate ring.},
	keywords = {bis(diphenylphosphino)methane, CONVERSION, COORDINATION CHEMISTRY, HYDROGEN-SULFIDE, LIGANDS, MAGNETIC-RESONANCE, MOLECULAR-STRUCTURES, palladium, RAY CRYSTAL-STRUCTURE, SE},
	isbn = {0020-1669},
	url = {<Go to ISI>://000080194500029},
	author = {Wong, T. Y. H. and Rettig, S. J. and James, Brian R.}
}
@article {4325,
	title = {Ligand elaboration mediated by a Cp*W(NO) template: Stepwise incorporation of small molecules into a tungsten vinyl fragment},
	journal = {Organometallics},
	volume = {17},
	number = {5},
	year = {1998},
	note = {ISI Document Delivery No.: ZC012Times Cited: 21Cited Reference Count: 81},
	month = {Mar},
	pages = {854-871},
	type = {Article},
	abstract = {{Thermolysis of the alkyl vinyl complex Cp*W(NO)(CH2SiMe3)(CPh=CH2) (1) in the presence of unsaturated, heteroatom-containing compounds such as esters and nitriles quantitatively affords metallacyclic products of reductive coupling. These are trapped as 18e complexes via either intramolecular rearrangement or intermolecular reaction with added trapping reagents. The nature of these metallacycles is consistent with the intermediacy of the acetylene complex Cp*W(NO)(eta(2)-CPh=CH) (A) derived in situ from the reductive elimination of SiMe4 from 1. With esters ROAc (R = Me, Et), reductive coupling and C-O bond cleavage yields the alkoxide-containing oxametallacyclopentadiene complexes Cp*W-(No)(eta(2)-O=C(Me)CH=CPh)(OR) (2},
	keywords = {ACTIVATION, ALKYNE COMPLEXES, BOND-CLEAVAGE, C-H, INSERTION, KETONE COMPLEXES, METAL-COMPLEXES, ORGANIC-SYNTHESIS, ORGANOMETALLIC NITROSYL CHEMISTRY, RAY CRYSTAL-STRUCTURE, SEQUENTIAL, ZIRCONOCENE COMPLEXES},
	isbn = {0276-7333},
	url = {<Go to ISI>://000072530700014},
	author = {Legzdins,Peter and Lumb, S. A. and Young, V. G.}
}
@article {3949,
	title = {Synthesis and characterization of the mixed valence Cu(I)/Cu(II) 3,5-bis(trifluoromethyl)-pyrazolate complex, [Cu(II)(2)Cu(I)(F(6)dmpz)(5)]},
	journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie},
	volume = {75},
	number = {5},
	year = {1997},
	note = {ISI Document Delivery No.: XF492Times Cited: 18Cited Reference Count: 17},
	month = {May},
	pages = {491-498},
	type = {Article},
	abstract = {{The reaction of molten 3,5-bis(trifluoromethyl)pyrazole (F(6)dmpzH) with copper metal shot under an atmosphere of dioxygen yields the green trimetallic mixed valence [Cu(II)(2)Cu(I)(F(6)dmpz)(5)]. Crystals of [Cu(II)(2)Cu(I)F(6)dmpz)(5)] are triclinic},
	keywords = {3, 5-bis(trifluoromethyl)pyrazolates, ANTIFERROMAGNETISM, copper, COPPER(II) COMPLEX, MAGNETIC-PROPERTIES, METAL PYRAZOLATE POLYMERS, RAY CRYSTAL-STRUCTURE, STRUCTURE, trimetallic, X-RAY},
	isbn = {0008-4042},
	url = {<Go to ISI>://A1997XF49200003},
	author = {Ehlert, M. K. and Storr, A. and Summers, D. A. and Thompson, R. C.}
}
@article {3949,
	title = {Synthesis and characterization of the mixed valence Cu(I)/Cu(II) 3,5-bis(trifluoromethyl)-pyrazolate complex, [Cu(II)(2)Cu(I)(F(6)dmpz)(5)]},
	journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie},
	volume = {75},
	number = {5},
	year = {1997},
	note = {ISI Document Delivery No.: XF492Times Cited: 18Cited Reference Count: 17},
	month = {May},
	pages = {491-498},
	type = {Article},
	abstract = {{The reaction of molten 3,5-bis(trifluoromethyl)pyrazole (F(6)dmpzH) with copper metal shot under an atmosphere of dioxygen yields the green trimetallic mixed valence [Cu(II)(2)Cu(I)(F(6)dmpz)(5)]. Crystals of [Cu(II)(2)Cu(I)F(6)dmpz)(5)] are triclinic},
	keywords = {3, 5-bis(trifluoromethyl)pyrazolates, ANTIFERROMAGNETISM, copper, COPPER(II) COMPLEX, MAGNETIC-PROPERTIES, METAL PYRAZOLATE POLYMERS, RAY CRYSTAL-STRUCTURE, STRUCTURE, trimetallic, X-RAY},
	isbn = {0008-4042},
	url = {<Go to ISI>://A1997XF49200003},
	author = {Ehlert, M. K. and Storr, A. and Summers, D. A. and Thompson, R. C.}
}
@article {3815,
	title = {Bis(ligand) rhenium(V) and technetium(V) complexes of two naturally occurring binding moieties (oxazoline and thiazoline)},
	journal = {Inorganic Chemistry},
	volume = {35},
	number = {2},
	year = {1996},
	note = {ISI Document Delivery No.: TR240Times Cited: 39Cited Reference Count: 19},
	month = {Jan},
	pages = {368-372},
	type = {Article},
	abstract = {{Attempts to prepare tris(ligand) metal complexes of technetium in intermediate oxidation states with potentially bidentate oxazoline- and thiazoline-containing ligands were unsuccessful; when pertechnetate was reduced in the presence of excess ligand, TcO2 . xH(2)O was produced. Instead, by reaction with preformed M . O cores, a series of oxotechnetium(V) and oxorhenium(V) complexes of the formula MOXL(2) (M = Re},
	keywords = {COORDINATION CHEMISTRY, RADIOPHARMACEUTICALS, RAY CRYSTAL-STRUCTURE, SIDEROPHORE, TC-99M},
	isbn = {0020-1669},
	url = {<Go to ISI>://A1996TR24000018},
	author = {Shuter, E. and Hoveyda, H. R. and Karunaratne, V. and Rettig, S. J. and Orvig, Chris}
}
@article {3436,
	title = {RHENIUM(V) AND TECHNETIUM(V) COMPLEXES OF BIS(O-HYDROXYPHENYL)PHENYLPHOSPHINE (PO2(2-)) AND (O-HYDROXYPHENYL)DIPHENYLPHOSPHINE (PO-) LIGANDS},
	journal = {Inorganic Chemistry},
	volume = {34},
	number = {9},
	year = {1995},
	note = {ISI Document Delivery No.: QV824Times Cited: 52Cited Reference Count: 40},
	month = {Apr},
	pages = {2287-2299},
	type = {Article},
	abstract = {{A modified preparation of the hydrochloride adduct of the potentially tridentate ligand bis(o-hydroxyphenyl)-phenylphosphine (abbreviated H2PO2 . HCl) is described. From this ligand and a potentially bidentate analog, (o-hydroxyphenyl)diphenylphosphine (HPO), POxx- (x = 1, 2) complexes of rhenium(V) and technetium(V) were prepared by metathesis reactions with the appropriate metal(V) precursor and/or by reduction/ligand-exchange reactions with ammonium perrhenate or pertechnetate. The new complexes fall into four categories: bis(PO) complexes (MOCl(PO)(2)},
	keywords = {CHEMISTRY, COORDINATION, RAY CRYSTAL-STRUCTURE, TERTIARY PHOSPHINES},
	isbn = {0020-1669},
	url = {<Go to ISI>://A1995QV82400008},
	author = {Luo, H. Y. and Setyawati, I. and Rettig, S. J. and Orvig, Chris}
}
@article {3216,
	title = {MULTINUCLEAR COMPLEXES DERIVED FROM FERROCENYLPHOSPHINES AND TRIRUTHENIUM DODECACARBONYL},
	journal = {Organometallics},
	volume = {13},
	number = {9},
	year = {1994},
	note = {ISI Document Delivery No.: PF967Times Cited: 11Cited Reference Count: 37},
	month = {Sep},
	pages = {3594-3604},
	type = {Article},
	abstract = {{Pyrolysis of Ru-3(CO)(1)1(PFc(2)Ph) in hexanes for 15 h gave the trinuclear cluster Ru-3(CO)(8)(mu CO)(mu-H)[mu-eta(3)-(eta(5)-C(5)H(3)PFcPh)Fe(eta(5)-C5H5)] (11) in 20\% yield. Pyrolysis of Ru-3(CO)(12) with PFc(2)Ph in octane for 3.5 h gave the tetranuclear cluster RU(4)(CO)(11)(mu(3)-PFc)(mu-eta(1):eta(5)-C5H4) (12) in 12\% yield and the previously known 8, RU(4)(CO)(10)(mu-CO)mu(4)-PFc)(mu(4)-C6H4), in 10 yield: the mild conditions are noteworthy. Pyrolysis of Ru-3(CO)(12) With PEt(2)Fc in octane for 18 h gave the hexanuclear cluster complexes RU(6)C(CO)(14)(mu-PEt(2))(2) (13) and RU(6)C(CO)(13)(mu-PEt(2))(eta(5)-C5H5) (14) in 15\% and 25\% yields, respectively, and the pentanuclear derivative Ru-5(CO)(9)(mu-CO)(eta(6)-C6H6)(2)(mu(4)-PEt) (15) (low yield). Pyrolysis Of Ru-3(CO)(12) with PEtFc(2) in toluene for 10 h gave the pentanuclear cluster RU(5)(CO)(12)(mu(4)-PEt)(eta(6)-C7H8) (16) in similar to 5\% yield. Crystal data: 8, monoclinic, space group P2(1)/c},
	keywords = {benzene, MODE, MOLECULAR-STRUCTURES, OSMIUM CLUSTER, PH, phosphines, RAY CRYSTAL-STRUCTURE, RU3(CO)12, ruthenium, THERMOLYSIS},
	isbn = {0276-7333},
	url = {<Go to ISI>://A1994PF96700036},
	author = {Zheng, T. C. and Cullen, W. R. and Rettig, S. J.}
}
@article {2801,
	title = {END-ON VERSUS SIDE-ON BONDING OF DINITROGEN TO DINUCLEAR EARLY TRANSITION-METAL COMPLEXES},
	journal = {Journal of the American Chemical Society},
	volume = {115},
	number = {7},
	year = {1993},
	note = {ISI Document Delivery No.: KW980Times Cited: 72Cited Reference Count: 55},
	month = {Apr},
	pages = {2782-2792},
	type = {Article},
	abstract = {{The preparation of a series of dinuclear complexes of zirconium and tantalum is presented in an effort to determine factors involved in the coordination mode of the bridging dinitrogen ligand. Reduction of ZrCl3[N(SiMe2-CH2PR2)2] (R = Pr(i) and B(t)) with Na/Hg under N2 generate the corresponding dinitrogen complexes {[(R2PCH2-SiMe2)2 SiMe2)2N]ZrCl}2(mu-eta2:eta2-N2); the X-ray crystal structure of the dark blue derivative having R = Pr(i) shows that the dinitrogen unit is bridging in a planar side-on bonding mode. The N-N bond distance is 1.548(7) angstrom, which is the longest such distance for any dinitrogen complex reported. Molecular orbital calculations on this molecule indicate that the N2 unit bonds in a side-on fashion due to the unavailability of one of the d orbitals on each zirconium that would normally be involved in a pi-bond with the antibonding pi*-orbitals of the N2 moiety. This particular zirconium d orbital is unavailable due to the ancillary tridentate ligand which positions the amide donor (and the chloride) to overlap effectively with this d orbital. The results of this MO study also show that the HOMO has delta-symmetry. When the related derivative Zr(eta5-C5H5)Cl2[N(SiMe2CH2PPri2)2] is reduced under N2, the corresponding dinuclear derivative {[(Pri2PCH2SiMe2)2N]Zr(eta5-C5H5)}2(mu-eta1:eta1-N2) has the bridging dinitrogen unit end-on. In this case, the MO analysis shows that the cyclopentadienyl ligand overlaps with that zirconium d orbital which could form the delta-molecular orbital of the side-on mode; as a result, the end-on form is generated. A similar argument can be used to rationalize the end-on binding mode of the dinitrogen unit in the related tantalum derivatives {[(Pri2PCH2SiMe2)2N]Ta=CHR}2(mu-eta1:eta1-N2) (R = Bu(t), Ph), since now the alkylidene unit effectively overlaps with the same d orbital Crystals of {[(Pri2PCH2-SiMe2)2N]ZrCl}(mu-eta2:eta2-N2)-CH3C6H5 are monoclinic},
	keywords = {ACTIVATION, CARBON BONDS, CHEMISTRY, MOLECULAR-STRUCTURE, N-2 LIGAND, NITROGEN-FIXATION, PHOSPHINE COMPLEXES, RAY CRYSTAL-STRUCTURE, TANTALUM COMPLEXES, X-RAY},
	isbn = {0002-7863},
	url = {<Go to ISI>://A1993KW98000028},
	author = {Fryzuk,Michael D. and Haddad, T. S. and Mylvaganam, M. and McConville, D. H. and Rettig, S. J.}
}
@article {4547,
	title = {SYNTHESIS, STRUCTURE AND HYDROGENATION OF ETA-3-BENZYL DIPHOSPHINE COMPLEXES OF RHODIUM AND IRIDIUM},
	journal = {Journal of Organometallic Chemistry},
	volume = {445},
	number = {1-2},
	year = {1993},
	note = {ISI Document Delivery No.: KR221Times Cited: 30Cited Reference Count: 39},
	month = {Feb},
	pages = {245-256},
	type = {Article},
	abstract = {{The preparation of(COD)Rh(eta3-CH2Ph) is described starting from [(COD)Rh]2(mu-Cl)2 by the addition of either Zn(CH2Ph), or Mg(CH2Ph)2(THF)2. The addition of the bulky chelating diphosphines tBu2P(CH2)3PtBu2, iPr2P(CH2)3PiPr2, iPr2P(CH2)2PiPr2, iPr2PCH2PiPr2 and Cy2PCH2PCy2 to (COD)Rh(eta3-CH2Ph) yields the coordinatively unsaturated, four-coordinate rhodium complexes of the form P2Rh(eta3-CH2Ph). Iridium complexes of the form P2Ir(eta3-CH2Ph)(where P2 = tBu2P(CH2)3PtBu, and iPr2P(CH2)3PiPr2) can be prepared from [P2Ir]2(mu-Cl), and Zn(CH2Ph)2 or Mg(CHPh)2(THF)2. Reaction of the benzyl complexes with H-2 (1 atM) yields binuclear hydride derivatives of varying composition depending on the chelate ring size of the coordinated diphosphine. For the diphosphines with only a single methylene in the backbone, binuclear hexahydride complexes are formed in which the diphosphine is binucleating. The X-ray structure of {iPr2P(CH22)3PiPr2}Rh(eta3-CH2Ph) shows a square planar geometry about rhodium with alternating single and double bonds in the eta3-coordinated benzyl fragment. Crystals of (1,3-bis(diiso-propylphosphino)propane}rhodium(eta3-benzyl) are monoclinic},
	keywords = {BINUCLEAR, BRIDGING ALKENYL, CATALYTIC-HYDROGENATION, CHEMISTRY, DIHYDROGEN, Hydrides, OXIDATIVE-ADDITION, RAY CRYSTAL-STRUCTURE, REACTIVITY, RHRE(CO)4(PH2PCH2PPH2)2},
	isbn = {0022-328X},
	url = {<Go to ISI>://A1993KR22100035},
	author = {Fryzuk,Michael D. and McConville, D. H. and Rettig, S. J.}
}
@article {7230,
	title = {THE 1992 ALCAN AWARD LECTURE EXCURSIONS AROUND THE PERIODIC-TABLE - LIGAND DESIGN IN INORGANIC-CHEMISTRY},
	journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie},
	volume = {70},
	number = {12},
	year = {1992},
	note = {ISI Document Delivery No.: KL565Times Cited: 56Cited Reference Count: 38},
	month = {Dec},
	pages = {2839-2845},
	type = {Article},
	abstract = {An overview is given on the strategy used to come up with the design of a new type of ligand that is appropriate for coordination to both the late metals and the early metals. The coordination chemistry of the potentially tridentate ligand -N(SiMe2CH2PR2)2 is developed starting with the Ni triad and then the heavier members of group 9, namely rhodium and iridium. It is with iridium that reactive fragments such as methylene and vinylidene have been stabilized and their chemistry examined. Extension to groups 3, 4, and the lanthanides is also discussed. With these elements, phosphine coordination imparts new reactivity patterns such as alkane elimination with group 3 and dinitrogen activation with group 4. In addition, the side-on binding mode for N2 attached to a dinuclear zirconium system is also presented.},
	keywords = {asymmetric synthesis, CARBON BOND FORMATION, DERIVATIVES, DINITROGEN, FLUXIONAL BEHAVIOR, HAFNIUM(IV), hydride, MULTI-DENTATE LIGANDS, PHOSPHINE COMPLEXES, RAY CRYSTAL-STRUCTURE},
	isbn = {0008-4042},
	url = {<Go to ISI>://A1992KL56500001},
	author = {Fryzuk,Michael D.}
}
@article {7225,
	title = {{METAL PYRAZOLATE POLYMERS .3. SYNTHESIS AND STUDY OF CU(I) AND CU(II) COMPLEXES OF 4-XDMPZ (WHERE X = H, CL, BR, I, AND CH3 FOR CU(I) AND X = H, CL, BR, AND CH3 FOR CU(II)},
	journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie},
	volume = {70},
	number = {4},
	year = {1992},
	note = {ISI Document Delivery No.: JH895Times Cited: 33Cited Reference Count: 24},
	month = {Apr},
	pages = {1121-1128},
	type = {Article},
	abstract = {The copper(I) complexes [Cu(4-Xdmpz)]3 (where X = H, Cl, Br, I and CH3; dmpz = 3,5-dimethylpyrazolate) and the copper(II) complexes [Cu(4-Xdmpz)2]x have been synthesized and characterized. Qualitative solubility, infrared spectroscopic, and differential scanning calorimetric studies are reported for all complexes. Mass spectra support trimeric formulations for the copper(I) complexes. Scanning electron micrographs and powder X-ray diffractograms have been recorded for the copper(II) compounds. Electronic and EPR spectroscopic studies as well as magnetic susceptibility studies from 2 to 300 K are also reported for the copper(II) compounds, which are proposed to have polymeric chain structures. The magnetic data reveal strong antiferromagnetic interactions in all four of the copper(II) compounds. The data have been analysed employing an isotropic Heisenberg model for antiferromagnetic coupling in extended chain polymers. Values of the exchange coupling constant, J, are determined as -58, -61, -66, and -66 cm-1 for the X = H, CH3, Cl, and Br complexes respectively. The X = Cl compound exhibits an abrupt decrease in magnetic susceptibility below 40 K and possible causes of this anomalous behaviour are discussed.},
	keywords = {MAGNETIC-PROPERTIES, RAY CRYSTAL-STRUCTURE, RING},
	isbn = {0008-4042},
	url = {<Go to ISI>://A1992JH89500015},
	author = {Ehlert, M. K. and Storr, A. and Thompson, R. C.}
}
@article {7225,
	title = {{METAL PYRAZOLATE POLYMERS .3. SYNTHESIS AND STUDY OF CU(I) AND CU(II) COMPLEXES OF 4-XDMPZ (WHERE X = H, CL, BR, I, AND CH3 FOR CU(I) AND X = H, CL, BR, AND CH3 FOR CU(II)},
	journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie},
	volume = {70},
	number = {4},
	year = {1992},
	note = {ISI Document Delivery No.: JH895Times Cited: 33Cited Reference Count: 24},
	month = {Apr},
	pages = {1121-1128},
	type = {Article},
	abstract = {The copper(I) complexes [Cu(4-Xdmpz)]3 (where X = H, Cl, Br, I and CH3; dmpz = 3,5-dimethylpyrazolate) and the copper(II) complexes [Cu(4-Xdmpz)2]x have been synthesized and characterized. Qualitative solubility, infrared spectroscopic, and differential scanning calorimetric studies are reported for all complexes. Mass spectra support trimeric formulations for the copper(I) complexes. Scanning electron micrographs and powder X-ray diffractograms have been recorded for the copper(II) compounds. Electronic and EPR spectroscopic studies as well as magnetic susceptibility studies from 2 to 300 K are also reported for the copper(II) compounds, which are proposed to have polymeric chain structures. The magnetic data reveal strong antiferromagnetic interactions in all four of the copper(II) compounds. The data have been analysed employing an isotropic Heisenberg model for antiferromagnetic coupling in extended chain polymers. Values of the exchange coupling constant, J, are determined as -58, -61, -66, and -66 cm-1 for the X = H, CH3, Cl, and Br complexes respectively. The X = Cl compound exhibits an abrupt decrease in magnetic susceptibility below 40 K and possible causes of this anomalous behaviour are discussed.},
	keywords = {MAGNETIC-PROPERTIES, RAY CRYSTAL-STRUCTURE, RING},
	isbn = {0008-4042},
	url = {<Go to ISI>://A1992JH89500015},
	author = {Ehlert, M. K. and Storr, A. and Thompson, R. C.}
}
@article {7231,
	title = {PHOSPHINE COMPLEXES OF ZIRCONIUM AND HAFNIUM - SYNTHESIS, STRUCTURE, AND FLUXIONAL BEHAVIOR OF THE TRIMETHYL DERIVATIVES MME3[N(SIME2CH2PR2)2] (R = ME, ISO-PR, TERT-BU) - EVIDENCE FOR A BICAPPED-TETRAHEDRAL GEOMETRY},
	journal = {Organometallics},
	volume = {11},
	number = {1},
	year = {1992},
	note = {ISI Document Delivery No.: GZ040Times Cited: 17Cited Reference Count: 31},
	month = {Jan},
	pages = {469-472},
	type = {Note},
	abstract = {The addition of 3 equiv of methyl Grignard (MeMgCl) to the amidodiphosphine derivatives MCl3[N-(SiMe2CH2PR2)2] (M = Zr, Hf; R = Me, Pr(i), Bu(t)) generates the corresponding trimethyl complexes MMe3[N-(SiMe2CH2PR2)2]. The solution structures and fluxional behavior of these molecules along with the X-ray structure of HfMe3[N(SiMe2CH2PMe2)2] are presented.},
	keywords = {ALKYL, CARBON BOND, DINITROGEN, ETHYLENE POLYMERIZATION, GROUP-4, HYDRIDE DERIVATIVES, INSERTION, RAY CRYSTAL-STRUCTURE, REDUCTION, TITANIUM},
	isbn = {0276-7333},
	url = {<Go to ISI>://A1992GZ04000078},
	author = {Fryzuk,Michael D. and Carter, A. and Rettig, S. J.}
}
@article {7209,
	title = {THERMOLYSIS OF RU3(CO)10[FE(ETA-C5H4PPRI2)2] - STRUCTURE OF RU3(CO)8(MU-H)2[ETA-PC5H4)FE(ETA-C5H4PPRI2)] AND RU3(CO)8(MU-H)(MU-OH)[MU-FE(ETA-C5H4PPRI2)2]},
	journal = {Organometallics},
	volume = {11},
	number = {2},
	year = {1992},
	note = {ISI Document Delivery No.: HE298Times Cited: 21Cited Reference Count: 30},
	month = {Feb},
	pages = {853-858},
	type = {Article},
	abstract = {{Heating Ru3(CO)10(Fc{\textquoteright}(PPr(i)2)2) (Fc{\textquoteright} = Fe(eta-C5H4)2) in refluxing cyclohexane affords three products in moderate yields. The complex Ru3(CO)8(mu-H)2[(eta-PC5H4)Fe(eta-C5H4PPr(i)2)] (7) was characterized by X-ray diffraction. It crystallizes in the triclinic system, space group P1BAR, with a = 11.782 (4) angstrom},
	keywords = {BENZYNE COMPLEXES, CLUSTER CHEMISTRY, COORDINATION, MOLECULAR-STRUCTURE, OSMIUM, RAY CRYSTAL-STRUCTURE, SURFACE, X-RAY},
	isbn = {0276-7333},
	url = {<Go to ISI>://A1992HE29800052},
	author = {Cullen, W. R. and Rettig, S. J. and Zheng, T. C.}
}
@article {7068,
	title = {ORGANOMETALLIC NITROSYL CHEMISTRY .43. SYNTHESIS, CHARACTERIZATION, AND PHYSICAL-PROPERTIES OF UNUSUAL CYCLOPENTADIENYL BIS(BENZYL) NITROSYL COMPLEXES OF MOLYBDENUM AND TUNGSTEN},
	journal = {Organometallics},
	volume = {10},
	number = {4},
	year = {1991},
	note = {ISI Document Delivery No.: FG976Times Cited: 44Cited Reference Count: 52},
	month = {Apr},
	pages = {986-1002},
	type = {Article},
	abstract = {{Treatment of either the dichloro or diiodo nitrosyl precursors Cp{\textquoteright}M(NO)X2 (Cp{\textquoteright} = Cp (eta-5-C5H5) or Cp* (eta-5-C5Me5); M = Mo or W; X = Cl or I) in THF/Et2O with 2 equiv of a benzyl Grignard reagent, Ph{\textquoteright}CH2MgCl (Ph{\textquoteright} = C6H5 or 2,4,6-Me3C6H2), at 0-degrees-C affords the corresponding bis(benzyl) nitrosyl complexes, Cp{\textquoteright}M(NO)(CH2Ph{\textquoteright})2, isolated yields typically being 50-65\%. All the bis(benzyl) nitrosyl complexes are relatively high melting (143-163-degrees-C), orange-red, diamagnetic solids that are soluble in most common organic solvents. They are all stable to air in the solid state for at least 2 months, and only solutions of the tungsten species react with O2 to produce moderate yields of the corresponding dioxo benzyl complexes, Cp{\textquoteright}W(O)2(CH2Ph{\textquoteright}). The spectroscopic properties of the bis(benzyl) complexes are consistent with their possessing 18-electron, monomeric Cp{\textquoteright}M(NO)(eta-1-CH2Ph{\textquoteright})(eta-2-CH2Ph{\textquoteright}) molecular structures. Variable-temperature H-1 and C-13{H-1} NMR spectra of all the compounds in CD2Cl2 establish that they are stereochemically nonrigid in solutions at ambient temperatures, the principal fluxionality involving the two benzyl ligands exchanging their modes of attachment to the metal centers. C-13 NMR spectroscopy also establishes that the low-temperature limiting structures of the complexes in solution are identical with their solid-state molecular structures. Interestingly, the tungsten bis(benzyl) complexes exhibit the more facile fluxional processes in solution, this increased nonrigidity apparently rendering the tungsten complexes more reactive to Lewis bases. Crystal structure analyses of the five bis(benzyl) nitrosyl complexes have been performed in order to establish their solid-state molecular structures. Crystals of CpMo(NO)(CH2Ph)2 (1a) are orthorhombic, Pbca, with a = 10.122 (1) angstrom},
	keywords = {CARBONYL-COMPLEXES, CHEMICAL-PROPERTIES, COMPLEXES, LIGAND, NICKEL, OXO, PENTAFULVENES, RAY CRYSTAL-STRUCTURE},
	isbn = {0276-7333},
	url = {<Go to ISI>://A1991FG97600034},
	author = {Legzdins,Peter and Jones, R. H. and Phillips, E. C. and Yee, V. C. and Trotter, J. and Einstein, F. W. B.}
}
@article {7068,
	title = {ORGANOMETALLIC NITROSYL CHEMISTRY .43. SYNTHESIS, CHARACTERIZATION, AND PHYSICAL-PROPERTIES OF UNUSUAL CYCLOPENTADIENYL BIS(BENZYL) NITROSYL COMPLEXES OF MOLYBDENUM AND TUNGSTEN},
	journal = {Organometallics},
	volume = {10},
	number = {4},
	year = {1991},
	note = {ISI Document Delivery No.: FG976Times Cited: 44Cited Reference Count: 52},
	month = {Apr},
	pages = {986-1002},
	type = {Article},
	abstract = {{Treatment of either the dichloro or diiodo nitrosyl precursors Cp{\textquoteright}M(NO)X2 (Cp{\textquoteright} = Cp (eta-5-C5H5) or Cp* (eta-5-C5Me5); M = Mo or W; X = Cl or I) in THF/Et2O with 2 equiv of a benzyl Grignard reagent, Ph{\textquoteright}CH2MgCl (Ph{\textquoteright} = C6H5 or 2,4,6-Me3C6H2), at 0-degrees-C affords the corresponding bis(benzyl) nitrosyl complexes, Cp{\textquoteright}M(NO)(CH2Ph{\textquoteright})2, isolated yields typically being 50-65\%. All the bis(benzyl) nitrosyl complexes are relatively high melting (143-163-degrees-C), orange-red, diamagnetic solids that are soluble in most common organic solvents. They are all stable to air in the solid state for at least 2 months, and only solutions of the tungsten species react with O2 to produce moderate yields of the corresponding dioxo benzyl complexes, Cp{\textquoteright}W(O)2(CH2Ph{\textquoteright}). The spectroscopic properties of the bis(benzyl) complexes are consistent with their possessing 18-electron, monomeric Cp{\textquoteright}M(NO)(eta-1-CH2Ph{\textquoteright})(eta-2-CH2Ph{\textquoteright}) molecular structures. Variable-temperature H-1 and C-13{H-1} NMR spectra of all the compounds in CD2Cl2 establish that they are stereochemically nonrigid in solutions at ambient temperatures, the principal fluxionality involving the two benzyl ligands exchanging their modes of attachment to the metal centers. C-13 NMR spectroscopy also establishes that the low-temperature limiting structures of the complexes in solution are identical with their solid-state molecular structures. Interestingly, the tungsten bis(benzyl) complexes exhibit the more facile fluxional processes in solution, this increased nonrigidity apparently rendering the tungsten complexes more reactive to Lewis bases. Crystal structure analyses of the five bis(benzyl) nitrosyl complexes have been performed in order to establish their solid-state molecular structures. Crystals of CpMo(NO)(CH2Ph)2 (1a) are orthorhombic, Pbca, with a = 10.122 (1) angstrom},
	keywords = {CARBONYL-COMPLEXES, CHEMICAL-PROPERTIES, COMPLEXES, LIGAND, NICKEL, OXO, PENTAFULVENES, RAY CRYSTAL-STRUCTURE},
	isbn = {0276-7333},
	url = {<Go to ISI>://A1991FG97600034},
	author = {Legzdins,Peter and Jones, R. H. and Phillips, E. C. and Yee, V. C. and Trotter, J. and Einstein, F. W. B.}
}
@article {7013,
	title = {PHOSPHINE COMPLEXES OF THE EARLY METALS AND THE IANTHANOIDS},
	journal = {Pure and Applied Chemistry},
	volume = {63},
	number = {6},
	year = {1991},
	note = {ISI Document Delivery No.: FN255Times Cited: 21Cited Reference Count: 2314TH INTERNATIONAL CONF ON ORGANOMETALLIC CHEMISTRYAUG 19-24, 1990DETROIT, MIINT UNION PURE \& APPL CHEM, DIV INORGAN CHEM, WAYNE STATE UNIV},
	month = {Jun},
	pages = {845-850},
	type = {Proceedings Paper},
	abstract = {The coordination chemistry of the mixed-donor tridentate ligand -N(SiMe2CH2PR2)2 with the early transition metals of groups 3 and 4 and the lanthanide elements will be presented. This ancillary ligand has allowed for the formation of phosphine complexes of these hard elements which has in turn induced new reactivity patterns for hydrocarbyl ligands.},
	keywords = {DERIVATIVES, F-BLOCK METALS, FLUXIONAL BEHAVIOR, GROUP-4, HAFNIUM(IV), LIGANDS, RAY CRYSTAL-STRUCTURE, ZIRCONIUM(IV)},
	isbn = {0033-4545},
	url = {<Go to ISI>://A1991FN25500008},
	author = {Fryzuk,Michael D. and Haddad, T. S. and Berg, D. J. and Rettig, S. J.}
}
