Infrared spectra and structure of hydrogen bonds in N '-substituted isonicotinic hydrazides formed by crystallization from solution and via solid phase transformations

Citation
Yg. Atovmyan et al., Infrared spectra and structure of hydrogen bonds in N '-substituted isonicotinic hydrazides formed by crystallization from solution and via solid phase transformations, J MOL STRUC, 474, 1999, pp. 167-175
Citations number
11
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
JOURNAL OF MOLECULAR STRUCTURE
ISSN journal
00222860 → ACNP
Volume
474
Year of publication
1999
Pages
167 - 175
Database
ISI
SICI code
0022-2860(19990101)474:<167:ISASOH>2.0.ZU;2-W
Abstract
Crystal chemical and IR spectroscopic data for N'-substituted isonicotinic hydrazides (INH) of the general formula Py-C(=O)-N(H)-N'=C(H)-R [R = thiney l, furyl, 5-nitrofuryl, and o-nitrophenyl] have been analysed. Crystalline compounds (hydrates, solvates, solvate hydrates, salts) of a specified comp osition and structure, i.e. a desired system of intermolecular hydrogen bon ds, can be obtained by deliberately varying the solvent composition during synthesis or recrystallization. The systematic effects of substituent R on composition and structure of INH solvates and on their thermodynamic stabil ity have been revealed. (C) 1998 Elsevier Science B.V. All rights reserved.