Journal
JOURNAL OF ORGANOMETALLIC CHEMISTRY
Volume 659, Issue 1-2, Pages 102-106Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0022-328X(02)01709-6
Keywords
borane complexes; alkane complexes; chromium; tungsten; fluxional behavior
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Group 6 metal complexes of monodentate bis(trimethylphosphine)diborane(4), [M(CO)(5)(eta(1)-B2H4 . 2PMe(3))] (M = Cr, W) show two fluxional processes in solution: one is the very rapid exchange of the coordinated BH atom with the geminal hydrogen atom, and the other one is rather slow exchange with the vicinal hydrogens. This behavior embodies the fluxionality predicted for the tungsten ethane complex, [W(CO)(5)(eta(1)-C2H6)]. (C) 2002 Elsevier Science B.V. All rights reserved.
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