A comparison of 2,7-dihydro-2,2,7,7-tetramethyl-3,6-diphenyl-1,4,5-thia-diazepine and the corresponding 1,1-dioxide

Authors
Cuthbertson, E Frampton, CS MacNicol, DD
Citation
E. Cuthbertson et al., A comparison of 2,7-dihydro-2,2,7,7-tetramethyl-3,6-diphenyl-1,4,5-thia-diazepine and the corresponding 1,1-dioxide, ACT CRYST C, 57, 2001, pp. 431-432
Citations number
10
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS
ISSN journal
01082701 → ACNP
Volume
57
Year of publication
2001
Part
4
Pages
431 - 432
Database
ISI
SICI code
0108-2701(20010415)57:<431:ACO2>2.0.ZU;2-6
Abstract
The structures of the highly substituted title heterocycles, C20H22N2S and C20H22N2O2S, have been determined at 123 (1) K. Both molecules possess exac t C-2 symmetry and the seven-membered rings have very similar twist-boat co nformations. The magnitudes of the C-S-C bond angles, 107.13 (6) and 108.27 (7)degrees, respectively, are influenced significantly by the four substit uent methyl groups on the seven-membered rings.