EPR CHIRAL DISCRIMINATION OF R-ANION AND S-ANION RADICALS

Authors
STEVENSON CD WILHAM AL BROWN EC
Citation
Cd. Stevenson et al., EPR CHIRAL DISCRIMINATION OF R-ANION AND S-ANION RADICALS, The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory, 102(18), 1998, pp. 2999-3001
Citations number
13
Categorie Soggetti
Chemistry Physical
Journal title
The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory → ACNP
ISSN journal
10895639
Volume
102
Issue
18
Year of publication
1998
Pages
2999 - 3001
Database
ISI
SICI code
1089-5639(1998)102:18<2999:ECDORA>2.0.ZU;2-S
Abstract
Electron paramagnetic resonance spectroscopy has been used to discrimi nate between the R-and S-forms of the anion radical of camphorquinone. In a chiral solvent [SS- or RR-2,3-dimethoxy-1,4-bis(dimethylamino)bu tane saturated with sodium iodide], ion association between the semidi one and Na+ takes place. PM3 calculations suggest that the complex rel ationship between the solvent, anion, and cation varies sufficiently w ith changes in the chiral nature of the solvent or anion radical to al ter the appearance of the EPR signal allowing EPR chiral discriminatio n.