Nk. Makhmudova et al., X-ray diffraction analysis of the structure of 3-nicotinehydroxamic acid and pyrazinecarbohydroxamic acid monohydrate, RUSS J ORG, 37(6), 2001, pp. 866-868
X-ray diffraction analysis of the crystal structure of 3-nicotine- and pyra
zinecarbohydroxamic acids revealed that the molecules were present in keto
tautomeric form and possessed Z-configuration. The system of the intermolec
ular hydrogen bonds is the most affected by the character or the aromatic s
ubstituent and the presence of crystallization water molecules in the struc
ture.