@article {4457,
	title = {Organometallic oxides: Preparation and properties of the clusters [(eta-C5Me5)V(mu(3)-O)](4) and [(eta-C5Me5)V](4)(mu-O)(6) by reductive aggregation of (eta-C5Me5)VCl2(O)},
	journal = {Organometallics},
	volume = {18},
	number = {5},
	year = {1999},
	note = {ISI Document Delivery No.: 174EYTimes Cited: 10Cited Reference Count: 56},
	month = {Mar},
	pages = {870-879},
	type = {Article},
	abstract = {Reduction of Cp*VCl2(O) (Cp* = eta-C5Me5) by the powerful reductants sodium, potassium, magnesium, or calcium or the amalgams of these metals gave a mixture of the black cubane-like cluster [Cp*V(mu(3)-O)](4) and the black-green adamantane-like cluster [Cp*V](4)(mu-O)(6). A concurrent coproduct of the formation of [Cp*V](4)(mu-O)(6) was dark purple [Cp*V(mu-Cl)(2)](3). The formation of [Cp*V]4(mu-O)(6) was favored in toluene, whereas [Cp*V(mu(3)-O)](4) was favored in tetrahydrofuran. The identity of the reductant did not influence the ratio of [Cp*V]4(mu-O)(6) to [Cp*V(mu(3)-O)](4) produced. A scheme for the reduction is proposed; the key intermediate is [Cp*VClO](2). The cluster [Cp*V(mu(3)-O)](4) was paramagnetic (mu(eff) = 2.35 mu(B) at 300 K), and [Cp*V]4(mu-O)(6) was diamagnetic. The syntheses of [Cp*VCl(O)](2)(mu-O) by treatment of Cp*VCl2(O) with Ag2CO3 and [Cp*VCl(mu-O)](4) (which is paramagnetic, mu(eff) = 4.51 mu(B) at 300 K) by reduction of Cp*VCl2(O) with mercury are reported.},
	keywords = {CRYSTAL-STRUCTURES, CUBANE, D-BLOCK, DERIVATIVES, ELECTRONIC-STRUCTURES, MAGNETIC-PROPERTIES, {COMPLEXES},
	isbn = {0276-7333},
	url = {<Go to ISI>://000079022200011},
	author = {Abernethy, C. D. and Bottomley, F. and Day, R. W. and Decken, A. and Summers, D. A. and Thompson, R. C.}
}
@article {2968,
	title = {ORGANOMETALLIC OXIDES - PREPARATION AND PROPERTIES OF THE CLUSTERS (ETA-C(5)ME(5))(4)MO5O11 AND ([(ETA-C(5)ME(5))MO](3)(MU-OH)(N)(MU-O)(6-N))CL-2},
	journal = {Journal of the American Chemical Society},
	volume = {116},
	number = {18},
	year = {1994},
	note = {ISI Document Delivery No.: PF913Times Cited: 22Cited Reference Count: 39},
	month = {Sep},
	pages = {7989-7995},
	type = {Article},
	abstract = {{Reaction of [(eta-C(5)Me(5))Mo(O)(mu-O)](2) with [(eta-C(5)Me(5))Mo(CO)(2)]2 plus O-2 give (eta-C(5)Me(5))(4)Mo5O11. This cluster contains (eta-C(5)Me(5))Mo(O)(2) attached to a [(eta-C(5)Me(5))Mo(mu-O)](3)(mu(3)-O)(3)Mo(O)(2) unit-by a bridging oxygen atom. The [Mo(mu-O)](3)(mu(3)-O)(3)Mo structure is favored over the alternative adamantane-like [M(4)(mu-O)(6)] structure because of the pi-bonding of the terminal oxygen atoms attached to the apical Mb atom. The [(eta-C(5)Me(5))Mo(mu-O)](3)(mu(3)-O)(3)Mo(O)(2) unit contains four cluster electrons which are associated with the three basal molybdenum atoms. The magnetic moment of (eta-C(5)Me(5))(4)Mo4O11 was 3.16 mu(B) at 291 K, indicating that the cluster core has two unpaired electrons. Crystal data: C40H60Mo5O11, triclinic, P (1) over bar},
	keywords = {<(ETA-5-C5ME5)3RE3(MU-O)6>2+, <(ETA-C5H5)CR(MU-3-O)>4, COMPLEXES, CRYSTAL-STRUCTURE, ELECTRONIC-STRUCTURES, MAIN GROUP ELEMENTS, multiple bonds, OXIDATION, TRANSITION-METALS},
	isbn = {0002-7863},
	url = {<Go to ISI>://A1994PF91300005},
	author = {Bottomley, F. and Chen, J. H. and Preston, K. F. and Thompson, R. C.}
}
@article {7197,
	title = {SOLID-STATE P-31 NMR INVESTIGATIONS OF UNSATURATED PHOSPHORUS NITROGEN SULFUR RINGS},
	journal = {Magnetic Resonance in Chemistry},
	volume = {30},
	number = {12},
	year = {1992},
	note = {ISI Document Delivery No.: KA993Times Cited: 3Cited Reference Count: 20},
	month = {Dec},
	pages = {1220-1223},
	type = {Article},
	abstract = {Solid-state CP/MAS P-31 NMR spectra were measured for the following unsaturated phosphorus-nitrogen-sulfur ring systems: 1,5-R4P2N4S2 (R = Me, Et, Ph), 1,5-Ph4P2N4S2Ph2, Ph2PN4S3NPPH3 and Ph2PN3S2. The isotropic solid-state shifts correlate well with the corresponding shifts in solution, the largest difference being 9.0 ppm, indicating that there are no phase-dependent structural features. Analysis of the principal elements of the shielding tensor by the spinning side band method showed that one of these elements is primarily responsible for the anomalously low-field isotropic chemical shifts of 1,5-R4P2N4S2, but no correlation was found between this individual tensor component and any of the structural parameters of these folded eight-membered rings. Two isotropic shifts were observed for the crystallographically inequivalent phosphorus atoms of 1,5-Et4P2N4S2, but the individual P-31 isotropic shifts of 1,5-Me4P2N4S2 were not resolved.},
	keywords = {1, 5-DIPHOSPHADITHIATETRAZOCINES, BOND, CRYSTAL, ELECTRONIC-STRUCTURES, MAGIC ANGLE, PHOSPHORUS NITROGEN SULFUR RINGS, SOLID-STATE P-31 NMR, SPECTROSCOPY},
	isbn = {0749-1581},
	url = {<Go to ISI>://A1992KA99300010},
	author = {Chivers, T. and Edwards, M. and Fyfe, C. A. and Randall, L. H.}
}
