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Deuterium isotope effects and bonding in carbonylvanadium complexes

✍ Scribed by Dieter Rehder; Martin Hoch; Cynthia J. Jameson

Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
607 KB
Volume
28
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The effects of one‐bond and two‐bond ^2^H, ^13^CO and C^18^O isotope shifts on ^51^V shielding in various carbonyl–Cp–vanadium complexes (Cp = n^5^‐cyclopentadienyl) are reported and discussed with respect to the sensitivity of ^51^V shifts to bond extensions, and the rovibrationally averaged values of such bond extensions. These isotope effects provide some insight into the bonding situation in these complexes. It is shown that the rate‐determining step in the reaction between V(CO)~6~ and C~5~H~5~D, which leads to CpV(CO)~4~, is not subject to a kinetic isotope effect. The deuterium solvent isotope effects on ^51^V shielding in [V(CO)~6~]‐ and [VO~4~]^3‐^ are also investigated.

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