Primary hydrogen–deuterium kinetic isotope effects in the reduction of triarylcarbonium ions by formate anion
- 1 January 1978
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 2
- No. 12,p. 1243-1248
- https://doi.org/10.1039/p29780001243
Abstract
The rates of reduction of 16 triarylcarbonium ions to the corresponding triarylmethanes by HCO2Na and DCO2Na have been measured in 71.0% aqueous trifluoroacetic acid containing 2.50M-formate. Brønsted plots of log kH and log kD against pKR+ of the carbonium ion are slightly curved with the curvature of the former being the more pronounced. The kinetic isotope effect kH/kD varies between 1.8 and 3.2 and shows a maximum near pKR+ of –4, the first such maximum observed for a hydride transfer process.Keywords
This publication has 0 references indexed in Scilit: