Issue 69, 2015
From the journal:

Chemical Communications

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

S. A. Gonsales,a   M. E. Pascualini,a   I. Ghivirigaa  and  A. S. Veige*a  

* Corresponding authors

a Department of Chemistry, Center for Catalysis, University of Florida, Gainesville, FL 32611, USA
E-mail: veige@chem.ufl.edu

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

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Article information

DOI
https://doi.org/10.1039/C5CC04851F
Article type
Communication
Submitted
11 Jun 2015
Accepted
21 Jul 2015
First published
21 Jul 2015

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

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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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