@article {4733,
	title = {Organometallic oxides: preparation of the cluster [(eta-C5Me5)Mo](4)O-7 by reduction of [(eta-C5Me5)MoCl(O)](2)(mu-O) or (eta-C5Me5)MoCl2(O)},
	journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie},
	volume = {78},
	number = {3},
	year = {2000},
	note = {ISI Document Delivery No.: 296TVTimes Cited: 5Cited Reference Count: 63},
	month = {Mar},
	pages = {383-394},
	type = {Article},
	abstract = {Reduction of [(eta-C5Me5)MoCl(O)](2)(mu-O) or (eta-C5Me5)MoCl2(O) with sodium or magnesium amalgam, magnesium turnings, or tributyltin hydride produced [(eta-C5Me5)Mo](4)O-7, with [(eta-C5Me5)Mo(O)(mu-O)](2) as a co-product. [(eta-C5Me5)Mo](4)O-7 was characterized by X-ray diffraction, mass spectrometry, H-1 NMR and IR spectroscopies, and magnetism. Crystals of [(eta-C5Me5)Mo](4)O-7 contained a tetrahedral [(eta-C5Me5)Mo](4) unit (Mo-Mo = 2.909 (3) Angstrom) with the Mo4O7 core having the structure Mo-4(mu(2)-O(b))(3)(mu(2)-O(c))(3)(mu(3)-O(a)) (3). Microcrystalline samples of [(eta-C5Me5)Mo](4)O-7 were paramagnetic over the temperature range 2-300 K, with an effective moment of 1.26 mu(B) at 300 K. [(eta-C5Me5)Mo](4)O-7 was also paramagnetic in chloroform solution, over the temperature range 223-298 K, with an effective moment of 1.43 mu(B) at 298 K. The H-1 NMR spectrum showed a broad resonance at 16.3 ppm (delta nu(1/2) = 113 Hz) and two narrow resonances at 1.89 ppm and 1.69 ppm (delta nu(1/2) = 5 Hz). The magnetism and NMR spectra showed that [(eta-C5Me5)Mo](4)O-7 existed in two forms which were in equilibrium in solution. One form was paramagnetic (S = 1), with the Mo4O7 core having the geometry 3, and the other was diamagnetic (S = 0), with the Mo4O7 core having the geometry 4.},
	keywords = {CARBONYL-COMPLEXES, CHARGE-TRANSFER SALTS, CLUSTER, CRYSTAL-STRUCTURES, CYCLOPENTADIENYL, ELECTRONIC-STRUCTURE, MOLECULAR-STRUCTURE, MOLYBDENUM, OXIDATION, OXIDE, OXO, OXYGEN, paramagnetism, X-RAY},
	isbn = {0008-4042},
	url = {<Go to ISI>://000086043200009},
	author = {Bottomley, F. and Sanchez, V. and Thompson, R. C. and Womiloju, O. O. and Xu, Z. Q.}
}
@article {2933,
	title = {THE MICROWAVE-SPECTRUM, STRUCTURE, AND HARMONIC FORCE-FIELD OF THE VANDERWAALS TRIMER AR2-OCS},
	journal = {Journal of Chemical Physics},
	volume = {98},
	number = {4},
	year = {1993},
	note = {ISI Document Delivery No.: KP938Times Cited: 25Cited Reference Count: 28},
	month = {Feb},
	pages = {2735-2741},
	type = {Article},
	abstract = {The microwave rotational spectra of the van der Waals trimers Ar2-OCS, (Ar2-OCS)-S-34, and (Ar2-OCS)-18 have been observed between 7.0 and 18.0 GHz using pulsed molecular beam microwave Fourier transform (MWFT) spectroscopy. Sixty-five transitions, both a and c type, have been assigned for Ar2-OCS, as well as 37 transitions and 19 transitions for (Ar2-OCS)-S-34 and (Ar2-COS)-O-18 respectively. The rotational constants and quartic centrifugal distortion constants have been determined. The trimer has been found to be a distorted tetrahedrally shaped highly asymmetric top (K= approximately 0.377) with the OCS subunit lying in the C(s) symmetry plane. An effective ground state structure has been determined. The Ar-Ar distance and the two {\textquoteright}{\textquoteright}Ar-center of mass of OCS{\textquoteright}{\textquoteright} distances are slightly longer than those in the corresponding dimers Ar2 and Ar-OCS, respectively. A harmonic force field analysis has been performed on the basis of the centrifugal distortion constants, to predict the van der Waals force constants and the corresponding vibrational frequencies. The Ar-Ar stretch force constant of the trimer is 0.008 42 mdyn angstrom-1 which compares favorably with 0.0078 mdyn angstrom-1 reported for the free dimer Ar2. A comparison of the geometry and spectroscopic properties of Ar2-OCS with those of Ar2 and of the Ar2-HX (X = F, Cl, CN) trimers is given.},
	keywords = {AR-HCN, AR2HCL, ARHCL, CLUSTER, CONSTANTS, laser spectroscopy, ROTATIONAL SPECTRA},
	isbn = {0021-9606},
	url = {<Go to ISI>://A1993KP93800024},
	author = {Xu, Y. J. and Gerry, M. C. L. and Connelly, J. P. and Howard, B. J.}
}
@article {7212,
	title = {REACTION OF FE(ETA-C5H4)2S3 WITH M3(CO)12 (M = RU, OS) - STRUCTURE OF FE(ETA-C5H4S)2RU2(CO)6 AND FE(ETA-C5H4S)2(MU-3-S)OS4(CO)11},
	journal = {Organometallics},
	volume = {11},
	number = {9},
	year = {1992},
	note = {ISI Document Delivery No.: JN066Times Cited: 15Cited Reference Count: 37},
	month = {Sep},
	pages = {3152-3156},
	type = {Note},
	abstract = {{The thermal reaction of 1,2,3-trithia[3]ferrocenophane (1) with Ru3(CO)12 in refluxing hexanes affords the complex Fe(eta-C5H4S)2Ru2(CO)6 (4) in moderate yield. The reaction of 1 with Os3(CO)12 yields Fe(eta-C5H4S)2(S)Os2(CO)6 (5) in low yield in refluxing cyclohexane and four products in moderate to low yields in refluxing toluene. These compounds were identified as the diosmium species Fe(eta-C5H4S)2Os2(CO)8 (6), the triosmium species Fe(eta-C5H4S)2Os3(CO)10 (7), and the tetraosmium species Fe(eta-C5H4S)2(mu-3-S)Os4(CO)11 (8) and Fe(eta-C5H4S)2(mu-3-S)2Os4(CO)10 (9). Only complexes 4 and 8 were characterized by using X-ray crystallography. The common sawhorse geometry is found for 4, with the Fe(eta-C5H4S)2 group bridging the two Ru(CO)3 moieties. The osmium cluster 8 consists of a mu-3-S ligand bridging a spiked triangle of osmium atoms with the Fe(eta-C5H4S)2 ligand bridging the spike Os-Os bond. Both structures have eclipsed and nearly parallel cyclopentadienyl rings. Crystals of 4 are monoclinic, with a = 7.685 (3) angstrom},
	keywords = {BINUCLEAR RUTHENIUM(I), BRIDGED COMPLEXES, CHEMISTRY, CLUSTER, COMPLEXES, CRYSTAL-STRUCTURE, DATIVE BOND, LIGANDS, METAL-COMPLEXES, MOLECULAR-STRUCTURE, SYMMETRICALLY DISUBSTITUTED FERROCENES},
	isbn = {0276-7333},
	url = {<Go to ISI>://A1992JN06600037},
	author = {Cullen, W. R. and Talaba, A. and Rettig, S. J.}
}
