Yumeng Xi, Xu-Kai Chen, Yu-Song Wu
Jun 1, 2021
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Influential Citations
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Journal
Journal of Solid State Chemistry
Abstract
Abstract A set of compounds based on 4-amino-4H-1,2,4-triazole group, namely, x,x'-(4-amino-4H-1,2,4-triazole-3,5-diyl) diphenol [x = 2 (1), x = 3 (2), x = 4 (3)], were obtained through reacting a set of cyano-phenol and hydrazine under the solvothermal conditions, respectively. The title compounds 1–3 have been characterized by IR, element analysis (EA), single crystal X-ray diffraction, and powder X-ray diffraction (PXRD). A lot of hydrogen bonds (C/N/O–H⋯O/N) and C–H … π can be clearly observed in these compounds. It surprisedly occurs the presence of trans- and cis-conformation for compounds 3. The increasing order of the dihedral angles between the phenyl and triazole-yl rings is 1 2>3. The luminescent maximal peaks decrease with the diminution of hydroxylic steric effects. The Hirshfeld surface analyses reveal that the contribution order of the O⋯H/H⋯O contacts in compounds 1–3 is listed: 1