NEAR-DEGENERACY BETWEEN THE LOW-SPIN AND HIGH-SPIN STATES IN AN ALTERNANT HYDROCARBON DIRADICAL - TOPOLOGY AND GEOMETRY

Authors
RAJCA A UTAMAPANYA S SMITHHISLER DJ
Citation
A. Rajca et al., NEAR-DEGENERACY BETWEEN THE LOW-SPIN AND HIGH-SPIN STATES IN AN ALTERNANT HYDROCARBON DIRADICAL - TOPOLOGY AND GEOMETRY, Journal of organic chemistry, 58(21), 1993, pp. 5650-5652
Citations number
51
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Journal of organic chemistry → ACNP
ISSN journal
00223263
Volume
58
Issue
21
Year of publication
1993
Pages
5650 - 5652
Database
ISI
SICI code
0022-3263(1993)58:21<5650:NBTLAH>2.0.ZU;2-0
Abstract
Treatment of polyarylmethyl diethers with lithium metal in THF gave th e corresponding carbodianions; subsequent oxidation with iodine at 180 K produced diradicals, which were studied in frozen THF solutions by SQUID magnetometry in the 2-100 K temperature and 0-5.5 T magnetic fie ld ranges. Magnetization dependence on both the temperature and magnet ic field was compared to the model based upon the Heisenberg Hamiltoni an plus mean field. Small intramolecular magnetic interactions were fo und; both diradicals are triplet ground states.