@article {2626,
	title = {Synthesis and Coordination Chemistry of a Tridentate o-Phenylene-Bridged Diphosphine-NHC System},
	journal = {Organometallics},
	volume = {28},
	number = {9},
	year = {2009},
	note = {ISI Document Delivery No.: 441CETimes Cited: 8Cited Reference Count: 48Steinke, Tobias Shaw, Bryan K. Jong, Howard Patrick, Brian O. Fryzuk, Michael D.},
	month = {May},
	pages = {2830-2836},
	type = {Article},
	abstract = {The preparation of a di-o-phenylene-bridged tridentate PCP donor set is described starting with t-BOC-aniline followed by a series of steps that include lithiation, quenching with (Pr2PCl)-P-i, conversion to the phosphine sulfide, and assembling the unsaturated N-heterocyclic carbene unit. After desulfurization, the imidazolinium unit flanked by two phosphine units, represented as [(PCP)H]PF6 is obtained. Subsequent reaction with group 10 M(0) reagents (Ni(COD)(2), Pd(PPh3)(4), and Pt(PPh3)(4)) generates good yields of the Corresponding metal hydride complexes, [(PCP)MH]PF6 salts (where M = Ni(II), Pd(II), and Pt(II)). Each of these species has been characterized by elemental analyses, NMR spectroscopy, and X-ray crystallography. All of the structures show that the PCP unit is twisted with respect to the square plane of the d(8) metal complex.},
	keywords = {BIS(BENZIMIDAZOLIN-2-YLIDENE) PALLADIUM, BONDS, C COUPLING REACTIONS, COMPLEXES, H, HETEROCYCLIC CARBENE COMPLEXES, IMIDAZOLIUM SALTS, LIGANDS, OLEFIN METATHESIS, ONE-POT SYNTHESIS, ORGANOMETALLIC CATALYSIS, OXIDATIVE ADDITION},
	isbn = {0276-7333},
	url = {<Go to ISI>://000265746100022},
	author = {Steinke, T. and Shaw, B. K. and Jong, H. and Patrick, B. O. and Fryzuk,Michael D.}
}
@article {ISI:000254858100027,
	title = {Assignment of Pre-edge Features in the Ru K-edge X-ray Absorption Spectra of Organometallic Ruthenium Complexes.},
	journal = {Inorg. Chim. Acta},
	volume = {361},
	number = {4},
	year = {2008},
	pages = {1059},
	abstract = {The nature of the lowest energy bound-state transition in the Ru K-edge X-ray Absorption Spectra for a series of Grubbs-type ruthenium complexes was investigated. The pre-edge feature was unambiguously assigned as resulting from formally electric dipole forbidden Ru 4d<{\textendash}1s transitions. The intensities of these transitions are extremely sensitive to the ligand environment and the symmetry of the metal centre. In centrosymmetric complexes the pre-edge is very weak since it is limited by the weak electric quadrupole intensity mechanism. By contrast, upon breaking centrosymmetry, Ru 5p-4d mixing allows for introduction of electric dipole allowed character resulting in a dramatic increase in the pre-edge intensity. The information content of this approach is explored as it relates to complexes of importance in olefin metathesis and its relevance as a tool for the study of reactive intermediates.},
	keywords = {DFT, OLEFIN METATHESIS, XAS},
	issn = {0020-1693},
	doi = {10.1016/j.ica.2007.07.029},
	url = {http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=2819416\&tool=pmcentrez\&rendertype=abstract},
	author = {Getty, Kendra and Delgado-Jaime, Mario Ulises and Kennepohl, Pierre}
}
@article {2163,
	title = {Cross-metathesis of the vinyl group, on tetrapyrrolic macrocycles: Reactivity, selectivity, and mechanism},
	journal = {Journal of Organic Chemistry},
	volume = {73},
	number = {17},
	year = {2008},
	note = {ISI Document Delivery No.: 344EDTimes Cited: 3Cited Reference Count: 32Liu, Xin Sternberg, Ethan Dolphin, David},
	month = {Sep},
	pages = {6542-6550},
	type = {Article},
	abstract = {To find a general strategy for modifying the peripheral structure of vinylchlorin and porphyrin substrates, cross-metathes is on the vinyl group of these tetrapyrrolic macrocycles was investigated. The N-heterocyclic carbene-containing ruthenium complex 3 efficiently catalyzed the cross-metathes is (CM) of vinylchlorins and vinylporphyrins with a variety of olefins in high E-stereoselectivity. Different substituents on the olefin dramatically influenced the reaction. While the chlorins were more reactive than the porphyrins (as free bases), the corresponding zinc complexes showed higher activity. The reaction mechanism was investigated, and an empirical model for selective CM was applied to our studies to direct further reactions.},
	keywords = {A DERIVATIVES, CATALYSTS, chlorins, OLEFIN METATHESIS, PHOTODYNAMIC THERAPY, PHOTOSENSITIZERS, RUCL2(=CHR)(PR(3))(2)},
	isbn = {0022-3263},
	url = {<Go to ISI>://000258908000009},
	author = {Liu, X. and Sternberg, E. and Dolphin, D.}
}
@article {ISI:000251974000023,
	title = {An electronic rationale for observed initiation rates in ruthenium-mediated olefin metathesis: charge donation in phosphine and N-heterocyclic carbene ligands.},
	journal = {J. Am. Chem. Soc.},
	volume = {129},
	number = {51},
	year = {2007},
	month = {dec},
	pages = {15774{\textendash}6},
	chapter = {15774},
	abstract = {Ru K-edge XAS data indicate that second generation ruthenium-based olefin metathesis precatalysts (L = N-heterocyclic carbene) possess a more electron-deficient metal center than in the corresponding first generation species (L = tricyclohexylphosphine). This surprising effect is also observed from DFT calculations and provides a simple rationale for the slow phosphine dissociation kinetics previously noted for second-generation metathesis precatalysts.},
	keywords = {ALKENES, Alkenes: chemistry, BOND, carbenes, CATALYSTS, CL, DFT, ELECTRONS, Heterocyclic Compounds, Heterocyclic Compounds: chemistry, HYDROCARBONS, Hydrocarbons: chemistry, KINETICS, LIGANDS, MECHANISM, METHANE, Methane: analogs \& derivatives, Methane: chemistry, MOIETY, NHC LIGANDS, OLEFIN METATHESIS, phosphines, Phosphines: chemistry, RAY-ABSORPTION SPECTROSCOPY, ruthenium, Ruthenium: chemistry, TRANSITION-METAL-COMPLEXES, XAS},
	isbn = {0002-7863},
	issn = {1520-5126},
	doi = {10.1021/ja0747674},
	url = {<Go to ISI>://000251974000023 http://www.ncbi.nlm.nih.gov/pubmed/18047332},
	author = {Getty, Kendra and Delgado-Jaime, Mario Ulises and Kennepohl, Pierre}
}
@article {1646,
	title = {New rhodium(I) carbene complexes from carbene transfer reactions},
	journal = {Organometallics},
	volume = {25},
	number = {9},
	year = {2006},
	note = {ISI Document Delivery No.: 035AZTimes Cited: 25Cited Reference Count: 41},
	month = {Apr},
	pages = {2359-2363},
	type = {Article},
	abstract = {The Rh(I) complexes RhCl(diene)(NHC) have been synthesized from Ag(I) carbene precursors, where NHC is one of the N-heterocyclic carbenes 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene (IPr), 1,3bis(2,4,6-trimethylphenyl)imidazol-2-ylidene (IMes), 3-methyl-1-phenacylimidazol-2-ylidene (MAI), and 3-methyl-1-picolylimidazol-2-ylidene (MPI), and diene is either NBD or COD. The complexes are characterized by elemental analysis, H-1 NMR and IR spectroscopies, mass spectrometry, and, in the case of RhCl(NBD)(IMes) and RhCl(COD)(MAI), X-ray crystallography. The new Ag(I) carbene complexes [Ag(IPr)(2)]PF6 and [Ag(IMeS)(2)]PF6 are also reported.},
	keywords = {APPLICATION, CATALYTIC, COUPLING, EFFICIENT CATALYSTS, IRIDIUM, LIGAND, METAL-COMPLEXES, N-heterocyclic carbene, NUCLEOPHILIC CARBENE, OLEFIN METATHESIS, REACTIONS, SILVER(I)},
	isbn = {0276-7333},
	url = {<Go to ISI>://000236973500033},
	author = {Yu, X. Y. and Patrick, B. O. and James, Brian R.}
}
@article {1615,
	title = {Studies toward soraphen A: An aldol-metathesis avenue to the macrocyclic framework},
	journal = {Organic Letters},
	volume = {8},
	number = {13},
	year = {2006},
	note = {ISI Document Delivery No.: 053DITimes Cited: 5Cited Reference Count: 63Vincent, Guillaume Mansfield, Darren J. Vors, Jean-Pierre Ciufolini, Marco A.},
	month = {Jun},
	pages = {2791-2794},
	type = {Article},
	abstract = {We describe a convergent approach to soraphen A, 1, that involves coupling of two fragments by an aldol condensation - olefin metathesis sequence. This route permits rapid access to congeners of 1.},
	keywords = {ALPHA-HYDROXYALLYLATION, ANTIFUNGAL, CARBONYL-COMPOUNDS, CHIRAL ALDEHYDES, ENANTIOSELECTIVE SYNTHESIS, GLIDING BACTERIA, MACROLIDE, OLEFIN METATHESIS, ORGANIC-SYNTHESIS, SILYL ETHERS, STEREOSELECTIVE SYNTHESIS},
	isbn = {1523-7060},
	url = {<Go to ISI>://000238284500034},
	author = {Vincent, G. and Mansfield, D. J. and Vors, J. P. and Ciufolini,Marco A.}
}
@article {ISI:000238269600054,
	title = {X-ray absorption methods for the determination of Ru{\textendash}Cl bond covalency in olefin metathesis catalysts: On the normalization of chlorine K-edges in ruthenium complexes},
	journal = {Inorg. Chim. Acta},
	volume = {359},
	number = {9},
	year = {2006},
	pages = {3042{\textendash}3047},
	abstract = {A systematic approach to quantitative analysis of Cl K-edge XAS spectra in ruthenium complexes is outlined and applied to ruthenium carbene complexes involved in olefin metathesis catalysis. This method is generally well-suited for probing ligand donor contributions into empty transition metal d orbitals, but overlap of the Ru L-2,L-3 edge makes this very difficult in these complexes. A method for removing the Ru L-2,L-3 edges from the Cl K-edge spectrum is developed and tested. The normalization procedure makes use of the well-separated Ru L-2 edge and an appropriate L-3/L-2 branching ratio to unambiguously remove contributions from these edges and allow for accurate normalization of the Cl K-edge spectrum. A generalized background subtraction that accounts for variability over the large energy range involved is also described. The methodology should be general for any similarly overlapping edges, as long as one component of the spin-orbit split metal (L- or M-) edge is unperturbed. The results of this study indicate a substantial difference in Ru-Cl bonding depending on the nature of the catalyst. (c) 2006 Elsevier B.V. All rights reserved.},
	keywords = {METHODOLOGY, OLEFIN METATHESIS, XAS},
	issn = {00201693},
	doi = {10.1016/j.ica.2005.12.058},
	url = {http://linkinghub.elsevier.com/retrieve/pii/S0020169306000260},
	author = {Delgado-Jaime, Mario Ulises and Conrad, Jay C and Fogg, Deryn E and Kennepohl, Pierre}
}
@article {928,
	title = {Cross-metathesis reactions of vinyl-chlorins and -porphyrins catalyzed by a "second generation" Grubbs{\textquoteright} catalyst},
	journal = {Chemical Communications},
	number = {7},
	year = {2004},
	note = {ISI Document Delivery No.: 816QLTimes Cited: 13Cited Reference Count: 26},
	month = {Apr},
	pages = {852-853},
	type = {Article},
	abstract = {The first application of olefin cross-metathesis with vinyl-chlorins and vinylporphyrins using a "second generation" Grubbs{\textquoteright} catalyst is reported. Cross-metathesis products were obtained in good yields with high E-stereoselectivity.},
	keywords = {COMPLEXES, DERIVATIVES, OLEFIN METATHESIS, POLYMERIZATION, RUCL2(=CHR)(PR(3))(2), SCHROCK CATALYST},
	isbn = {1359-7345},
	url = {<Go to ISI>://000221124300061},
	author = {Liu, X. and Sternberg, E. and Dolphin, D.}
}
