dimers linked by strong O–H … .N1Tr hydrogen bonds. The Schiff bases obtained from the unsymmetrical 3-methyl,5-phenyl-1,2,4-triazole was found to be a different E-conformer which was determined through solution NMR and crystallographic diffraction analysis (13). The molecular geometry of the unsymmetrical triazole derivatives: hemiaminal (12) and Schiff base (13) were also optimized using density functional
摘要 合成了一系列稳定的含有3,5-二取代
1,2,4-三唑衍
生物的半胺醛和席夫碱。所制备化合物的结构经1H NMR、13C NMR、IR、MS和元素分析确证。还讨论了三唑环取代基对
半缩醛形成的空间和电子效应。对从 4-amino-3,5-dipyridyn-2-yl-1,2,4-triazole (4, 5) 获得的半缩
氨酸的单晶 X 射线衍射研究揭示了通过强 O-H 连接的中心对称二聚体的形成...... .N1Tr 氢键。发现从不对称 3-甲基,5-苯基-
1,2,4-三唑获得的席夫碱是一种不同的 E-conformer,通过溶液 NMR 和晶体衍射分析 (13) 确定。不对称三唑衍
生物的分子几何结构: