Metallaheteroborane clusters of group 5 transition metals derived from dichalcogenide ligands
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Title |
Metallaheteroborane clusters of group 5 transition metals derived from dichalcogenide ligands
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Creator |
BOSE, SK
MOBIN, SM GHOSH, S |
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Subject |
CRYSTAL-STRUCTURES
VANADIUM COMPLEXES CP-ASTERISK CHEMISTRY METALLABORANE METALLOBORANES SELENIUM SULFUR DERIVATIVES TELLURIUM Chalcogen Metallaboranes Niobium Selenium Vanadium |
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Description |
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.
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Publisher |
ELSEVIER SCIENCE SA
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Date |
2012-01-20T10:11:45Z
2012-01-20T10:11:45Z 2011 |
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Type |
Article
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Identifier |
JOURNAL OF ORGANOMETALLIC CHEMISTRY,696(20)3121-3126
0022-328X http://dx.doi.org/10.1016/j.jorganchem.2011.06.040 http://dspace.library.iitb.ac.in/jspui/handle/100/13827 |
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Language |
English
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