The influence of the nature of the solvent on the crystal structure and the character of formation of hydrogen bonds inN?-(5-nitrofurfurylidene)isonicotinehydrazide
作者:S. M. Aldoshin、L. A. Nikonova、E. G. Atovmyan、A. N. Utenyshev、D. B. Frolov
DOI:10.1007/bf01430728
日期:1996.9
N'-(5-Nitrofurfurylidene)isonicotinehydrazide (1) was synthesized in the reaction of nicotinic acid hydrazide with 5-nitrofurfurol in anhydrous or aqueous ethanol. Crystals of different shape and color were obtained depending on the conditions of synthesis and the nature of the solvent. As was established by IR spectroscopy, compound 1 in the crystalline state forms solvates of various types. An X-ray study of two different crystals, one obtained by recrystallization from methanol (1a), and the other obtained from aqueous acetic acid (1b), was performed. In the crystal structure of 1a intermolecular hydrogen bonds (IMHB) of the NH...N(Py) type occur; the crystals 1b are built of solvates with one molecule of acetic acid in which the components are bonded by the IMHB (Ac)O-H...N(Py). The solvates are linked in an infinite chain by the amidohydrate IMHB C=O...W...H-N.