@article {4998,
	title = {Organometallic oxides: Oxidation of the cubane [(eta-C5R5)Cr(mu(3)-O)](4) and the structures and magnetic properties of the salts {[(eta-C5R5)Cr(mu(3)-O)](4)}{tcnq} and {[(eta-C5R5)Cr(mu(3)-O)](4)}{BF4},
	journal = {Organometallics},
	volume = {20},
	number = {9},
	year = {2001},
	note = {ISI Document Delivery No.: 428DKTimes Cited: 5Cited Reference Count: 41},
	month = {Apr},
	pages = {1840-1848},
	type = {Article},
	abstract = {Differential pulse and current voltammetry for the cubane-like clusters [(eta -C5R5)Cr(mu (3)-O)](4) (R = H, Me; R-5 = H4Me) showed that [(eta -C5H4Me)Cr(mu (3)-O)](4) and [(eta -C5Me5)Cr(mu (3)-O)](4) were oxidized to {[(eta -C5R5)Cr(mu (3)-O)](4)}(+) and then to {[(eta -C5R5)Cr(mu (3)-O)](4)}(2+), but [(eta -C5H5)-Cr(mu (3)-O)](4) was oxidized only to {[(eta -C5H5)Cr(mu (3)-O)](4)}(+). Oxidation of [(eta -C5Me5)Cr(mu (3)-O)](4) (1) by AgBF4 or tcnq gave {[(eta -C5Me5)Cr(mu (3)-O)](4)}{BF4} (2) {[(eta -C5Me5)Cr(mu (3)-O)](4)}{tcnq} (3). It was shown by X-ray diffraction that the average Cr-Cr, Cr-O, and Cr-Cp* distances in 2 and 3 were 0.034(2), 0.007(5), and 0.02(1) Angstrom shorter than those in 1, respectively. Compounds 1 2, and 3 were antiferromagnetic., with similar intracluster exchange coupling constants, J (-262(23), -211(34), and -266(46) cm(-1), respectively). There was coupling between unpaired electrons on {[(eta -C5Me5)Cr(mu (3)-O)](4)}(+) and {tcnq}(-) in 3 at temperatures below 110 Ii.},
	keywords = {<(ETA-C5H5)CR(MU-3-O)>4, CLUSTERS, COMPLEXES, CRYSTAL-STRUCTURES, MONONUCLEAR, REACTIVITY, SINGLE-MOLECULE MAGNETS, TCNQ, X-ray structure},
	isbn = {0276-7333},
	url = {<Go to ISI>://000168445800017},
	author = {Allen, D. P. and Bottomley, F. and Day, R. W. and Decken, A. and Sanchez, V. 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.}
}
