N-14 AND N-15 NMR-STUDY OF 2,1,3-THIADIAZOLIUM-5-OLATE AND RELATED-COMPOUNDS

Authors
KOZMINSKI W JAZWINSKI J STEFANIAK L WEBB GA
Citation
W. Kozminski et al., N-14 AND N-15 NMR-STUDY OF 2,1,3-THIADIAZOLIUM-5-OLATE AND RELATED-COMPOUNDS, Journal of molecular structure, 323, 1994, pp. 177-179
Citations number
11
Categorie Soggetti
Chemistry Physical
Journal title
Journal of molecular structure → ACNP
ISSN journal
00222860
Volume
323
Year of publication
1994
Pages
177 - 179
Database
ISI
SICI code
0022-2860(1994)323:<177:NANNO2>2.0.ZU;2-9
Abstract
The H-1, C-13, N-14 and N-15 NMR data of 2,1,3-thiadiazolium-5-olate a nd some related structures have been collected. The nitrogen NMR data suggest that the compound exists in a cyclic B type mesoionic form. Pr otonation of 2,1,3-thiadiazolium-5-olate occurs on the exocyclic oxyge n. Contrary to type B mesoionic diazoles and tetrazoles, the N-14 NMR data suggest a relatively high density of positive charge on the N3 at om.