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Direct insertion of sulfur, selenium and tellurium atoms into metallaborane cages using chalcogen powders

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Title Direct insertion of sulfur, selenium and tellurium atoms into metallaborane cages using chalcogen powders
 
Creator SAHOO, S
MOBIN, SM
GHOSH, S
 
Subject triple-decker sandwich
containing cluster chemistry
heteroatom incorporation reactions
x = cl
metallaheteroborane chemistry
structural characterizations
electronic-structure
molecular-structure
middle rings
cp-asterisk
boron
molybdaboranes
metallaborane clusters
chalcogen atoms
 
Description Reaction of [(eta(5)-C(5)Me(5))MCl(4)], 1-2 (1: M = Mo and 2: W) with six fold excess of [LiBH(4)center dot thf] followed by thermolysis with excess chalcogen powders (S, Se and Te) yielded dichalcomolybda- and tungstaboranes, [(eta(5)-C(5)Me(5)M)(2)B(4)H(4)E(2)], 5-8 (5: M = Mo, E = S; 6: M = Mo, E = Se; 7: M = Mo, E = Te; 8: M = W, E = Se) in modest yields. The geometry of 5-8 resembles a hexagonal bipyramid with a missing connectivity of two chalcogen vertices and a very short cross cage metal-metal bonding. All these new dichalcometalla-boranes have been characterized by mass, (1)H, (11)B, (13)C NMR spectroscopy, and the structural types were unequivocally established by crystallographic analysis of compound 6. (C) 2009 Elsevier B. V. .
 
Publisher ELSEVIER SCIENCE SA
 
Date 2011-07-27T19:15:12Z
2011-12-26T12:58:05Z
2011-12-27T05:47:17Z
2011-07-27T19:15:12Z
2011-12-26T12:58:05Z
2011-12-27T05:47:17Z
2010
 
Type Article
 
Identifier JOURNAL OF ORGANOMETALLIC CHEMISTRY, 695(7), 945-949
0022-328X
http://dx.doi.org/10.1016/j.jorganchem.2009.11.025
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7306
http://hdl.handle.net/10054/7306
 
Language en