Synthesis, crystal structure, characterization, and microbial evaluation of (<i>E</i>)-<i>N</i>-(4-isopropylbenzylidene)thiophene-2-carbohydrazide
作者:A. Rajavel、T. Jeyakumar、M. L. Sundararajan、T. Srinivasan、D. Velmurugan
DOI:10.1080/15421406.2016.1170285
日期:2016.5.23
(E)-N-(4-isopropylbenzylidene)thiophene-2-carbohydrazide (L) was prepared and characterized using elemental analysis, UV-visible, IR, H-1 and C-13 NMR, mass spectra. The crystal structure of L was determined by single-crystal X-ray diffraction method. The compound L crystallizes in monoclinic space group P2(1)/n with a = 16.676(5) angstrom, b = 5.475(5) angstrom, c = 17.022(5) angstrom, and Z = 4. Antimicrobial and antifungal activity was assayed against four bacterial and four fungal microorganisms. The antioxidant behavior of L was also investigated.[GRAPHICS].
(E)-N-(4-异丙基苯基双侧) thiophene-2- carbamoylhydrazide (L) 被制备并表征,使用元素分析、UV-可见光、IR、H-1 和 C-13 NMR、质谱等方法。化合物 L 的晶体结构通过单晶 X 射线衍射方法确定。该化合物 L 晶体以斜六元系 P2(1)/n 结构存在,其 a = 16.676(5) Å,b = 5.475(5) Å,c = 17.022(5) Å,以及 Z = 4。进行了分子对细菌和真菌的 抗菌和抗真菌活性测试。另外,研究了 L 的抗氧化性能。
Polymorphs of 4-isopropylbenzylidine thiophene-2-carbohydrazide: Crystal growth and density functional theory computations
作者:A. Rajavel、A. Aditya Prasad、T. Jeyakumar
DOI:10.1016/j.molstruc.2016.10.025
日期:2017.2
thiophene-2-carbohydrazide (ITC) polymorphs have been investigated to conquer distinguishable strong N H ⋯ O and weak C H ⋯ S hydrogen bond interactions. The single crystals were grown at constant temperature and have characterized by density functional theory computations using B3LYP method by 3-21G basis set. The conformational isomers of ITC were compared and spectroscopically characterized by FT-IR and Raman