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Issue 22, 2014
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Multiple coupling of silanes with imido complexes of Mo

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The bis(imido) complexes (tBuN[double bond, length as m-dash])2Mo(PMe3)(L) (L = PMe3, C2H4) react with up to three equivalents of silane PhSiH3 to give the imido-bridged disilyl silyl Mo(VI) complex (tBuN){μ-tBuN(SiHPh)2}Mo(H)(SiH2Ph)(PMe3)2 (3) studied by NMR, IR and X-ray diffraction. NMR data supported by DFT calculations show that complex 3 is an unusual example of a silyl hydride of Mo(VI), without significant Si⋯H interaction. Mechanistic NMR studies revealed that silane addition proceeds in a stepwise manner via a series of Si–H⋯M agostic and silanimine complexes whose structures were further elucidated by DFT calculations.

Graphical abstract: Multiple coupling of silanes with imido complexes of Mo

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Article information

15 Jan 2014
21 Mar 2014
First published
24 Mar 2014

Dalton Trans., 2014,43, 8446-8453
Article type
Author version available

Multiple coupling of silanes with imido complexes of Mo

A. Y. Khalimon, N. A. McLeod, S. K. Ignatov, A. I. Okhapkin, L. G. Kuzmina, J. A. K. Howard and G. I. Nikonov, Dalton Trans., 2014, 43, 8446
DOI: 10.1039/C4DT00154K

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