Issue 69, 2015

Evidence for a zwitterionic transition state in double bond rotations within tungsten–vinyl complexes

Abstract

The trianionic pincer supported tungsten–vinyl complex [CF3-ONO]W(O){(CH3)3CC[double bond, length as m-dash]C(CH3)2} (3syn) undergoes facile double bond rotation at ambient temperature. The degenerate methyl exchange rates were measured via selective inversion-recovery experiments. DFT computations in conjunction with experimentally determined rate constants support a double bond rotation that proceeds via a Zwiterionic transition state.

Graphical abstract: Evidence for a zwitterionic transition state in double bond rotations within tungsten–vinyl complexes

Supplementary files

Article information

Article type
Communication
Submitted
11 Jun 2015
Accepted
21 Jul 2015
First published
21 Jul 2015

Chem. Commun., 2015,51, 13404-13407

Author version available

Evidence for a zwitterionic transition state in double bond rotations within tungsten–vinyl complexes

S. A. Gonsales, M. E. Pascualini, I. Ghiviriga and A. S. Veige, Chem. Commun., 2015, 51, 13404 DOI: 10.1039/C5CC04851F

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