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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/100/13827

Title: Metallaheteroborane clusters of group 5 transition metals derived from dichalcogenide ligands
Authors: BOSE, SK
MOBIN, SM
GHOSH, S
Keywords: CRYSTAL-STRUCTURES
VANADIUM COMPLEXES
CP-ASTERISK
CHEMISTRY
METALLABORANE
METALLOBORANES
SELENIUM
SULFUR
DERIVATIVES
TELLURIUM
Issue Date: 2011
Publisher: ELSEVIER SCIENCE SA
Citation: JOURNAL OF ORGANOMETALLIC CHEMISTRY,696(20)3121-3126
Abstract: Treatment of group 5 metal polychlorides such as, [Cp(n)MCl(4-x)] (M = V: n, x = 2; M Nb: n = 1, x = 0), or [Cp*TaCl(4)] (Cp eta(5)-C(5)H(5), Cp* = eta(5)-C(5)Me(5)), with [LiBH(4)center dot THF] followed by thermolysis in the presence of diphenyl diselenide yielded metallaheteroborane clusters [{CpV(mu-SePh)}(2)(mu-Se)], 1 [(CpNb)(2)B(4)H(9)(mu-SePh)], 2 and [(Cp*Ta)(2)B(4)H(11)(SePh)], 3 in modest yields. Compound 1 is an organovanadium selenolato cluster in which two (CpV) moieties bridged by (mu-Se) and two (mu-SePh) ligands. Compound 2 exhibits a bicapped tetrahedral core with one (mu-SePh) ligand. 3 is a tantalahexaborane cluster in which one of the terminal BH protons is substituted by SePh. Compounds 1-3 have been characterized by mass spectrometry, (1)H, (11)B, (13)C NMR spectroscopy, and the geometric structures were unequivocally established by crystallographic analysis of 1-3.
URI: http://dx.doi.org/10.1016/j.jorganchem.2011.06.040
http://dspace.library.iitb.ac.in/jspui/handle/100/13827
ISSN: 0022-328X
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