## Abstract A new catalytic system based on rhodium black using Crabtree's catalyst as an additive for direct hydrogen isotope exchange in aromatic compounds has been investigated. The level of deuterium incorporation can be improved from for example 16 to 93%. The new catalyst mixture tolerates a
Isotope effects in the hydrogen exchange reaction
β Scribed by Eli Pollak
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 645 KB
- Volume
- 80
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
β¦ Synopsis
The PODSs of the Hs system and its isotopic derivatives are used for computing exact adiabatic barriers we Fmd good agreement with experimentally measured ground and vibrationally excited activation energies. The theoretical results should stimulate further measurements of activation energies of vibrationally excited species-
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## Abstract Each of the hypoxauthine residues of the dinucleoside monophosphate, inosylyl(3β²β5β²)inosine (IpI), manifests the same rate of deuterium exchange of the proton at the 8βC ring position, as measured by Raman spectrophotometry. In the temperature interval 30β80Β°C and at neutral pD, the exc