Crystal structures and IR, NMR and UV spectra of 4-formyl- and 4-acetylpyridine N(4)-methyl- and N(4)-ethylthiosemicarbazones

Citation
H. Beraldo et al., Crystal structures and IR, NMR and UV spectra of 4-formyl- and 4-acetylpyridine N(4)-methyl- and N(4)-ethylthiosemicarbazones, J MOL STRUC, 559(1-3), 2001, pp. 99-106
Citations number
14
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
JOURNAL OF MOLECULAR STRUCTURE
ISSN journal
0022-2860 → ACNP
Volume
559
Issue
1-3
Year of publication
2001
Pages
99 - 106
Database
ISI
SICI code
0022-2860(20010107)559:1-3<99:CSAINA>2.0.ZU;2-I
Abstract
4-Formyl- and I-acetylpyridine N(4)-methyl- and N(4)-ethylthiosemicarbazone have been prepared, their structures solved and IR, NMR and UV spectra rec orded. Intramolecular and intermolecular hydrogen bonding are both present, but the mode of the intermolecular interaction differs in the four compoun ds. Further, there is a significant difference in their angles between the mean planes of the pyridine ring and thiosemicarbazone moiety. The H-1 NMR spectral studies show significant differences between the compounds as do U V and IR spectra. (C) 2001 Elsevier Science B.V. All rights reserved.