Synthesis and characterization of a series of isoniazid hydrazones. Spectroscopic and theoretical study
作者:Verónica Ferraresi-Curotto、Gustavo A. Echeverría、Oscar E. Piro、Reinaldo Pis-Diez、Ana C. González-Baró
DOI:10.1016/j.molstruc.2016.12.018
日期:2017.4
Abstract A family of hydrazones of isoniazid and a group of hydroxybenzalaldehydes (vanillin, 5-bromovanillin, 5-chlorosalicylaldehyde and 5-bromosalicylaldehyde) were obtained and fully characterized. The results, including theoretical data, are comparatively analyzed along with the already reported hydrazone of o -vanillin. The crystal structures of three compounds were determined. The hydrazones
摘要 获得了一系列异烟肼腙和一组羟基苯甲醛(香兰素、5-溴香兰素、5-氯水杨醛和5-溴水杨醛)并对其进行了充分表征。结果,包括理论数据,与已经报道的邻香兰素腙进行了比较分析。测定了三种化合物的晶体结构。由卤代醛得到的腙是同晶型的,并且彼此具有手性。(pyr)NH + ⋯Cl - 和 OwH⋯Cl - 键进一步稳定了结构。香草醛腙显示出不同于先前报道的构象异构体。相邻的分子通过 OH⋯N(pyr) 键相互连接,产生近乎平面的聚合物结构。在气相中搜索构象空间并优化几何形状,包括通过 DFT 的溶剂效应。结果扩展到描述 5-溴香草醛腙。在计算计算的帮助下测量和分配了 FTIR、NMR 和电子光谱。