ISOTOPE EFFECTS ON THE C-13 CHEMICAL-SHIFT AND CARBON-PROTON COUPLING-CONSTANT IN DICHLOROMETHANE

Authors
SERGEYEV NM SERGEYEVA ND RAYNES WT
Citation
Nm. Sergeyev et al., ISOTOPE EFFECTS ON THE C-13 CHEMICAL-SHIFT AND CARBON-PROTON COUPLING-CONSTANT IN DICHLOROMETHANE, Magnetic resonance in chemistry, 32(7), 1994, pp. 381-385
Citations number
18
Categorie Soggetti
Spectroscopy,Chemistry
Journal title
Magnetic resonance in chemistry → ACNP
ISSN journal
07491581
Volume
32
Issue
7
Year of publication
1994
Pages
381 - 385
Database
ISI
SICI code
0749-1581(1994)32:7<381:IEOTCC>2.0.ZU;2-#
Abstract
Carbon-proton and carbon-deuteron coupling constants were measured in the isotopomers CH2Cl2, CHDCl2, and CD2Cl2. The primary and secondary isotope effects on the carbon-proton coupling are -0.60 (+/- 0.05) and -0.25 (+/- 0.01) Hz, respectively. The deuterium-induced C-13 isotope shifts proved to be almost linearly dependent on the number of deuter ium atoms, although there is a small but significant non-additivity.