Crystal structure, FT-IR, FT-Raman, 1H NMR and computational study of ethyl 2-{[(Z)3-(4-chlorophenyl)-3-hydroxy-2-propene-1-thione] amino} acetate
作者:S. Prasanth、Mary Varughese、Nirmala Joseph、Paulson Mathew、T.K. Manojkumar、C. Sudarsanakumar
DOI:10.1016/j.molstruc.2014.10.037
日期:2015.2
Abstract The molecular structure of a thioamide derivative ethyl 2-[( Z )3-(4-chlorophenyl)-3-hydroxy-2-propene-1-thione] amino} acetate was determined by X-ray diffraction. The proton NMR ( 1 H NMR), Fourier Transform Infra-Red (FT-IR) and Fourier Transform Raman (FT-Raman) spectra of the compound were recorded and analyzed. The conjugated enol form of the compound was crystallized in the monoclinic
摘要 通过X射线衍射确定了硫代酰胺衍生物乙基2-[(Z)3-(4-氯苯基)-3-羟基-2-丙烯-1-硫酮]氨基}乙酸乙酯的分子结构。记录并分析了该化合物的质子核磁共振( 1 H NMR)、傅里叶变换红外(FT-IR)和傅里叶变换拉曼(FT-Raman)光谱。该化合物的共轭烯醇形式在单斜空间群 P2 1 /c 中结晶,晶胞尺寸 a = 12.514(2) A, b = 5.403(5) A, c = 21.233(3) A, β = 94.597 (4)°。结构通过直接方法求解并精制至 R 值为 0.0462。化合物中的硫代酰胺部分采用 Z 构象,CN 键显示出高旋转势垒。使用Gaussian 09程序通过B3LYP和RHF量子力学计算优化气相中的几何形状并计算振动频率。实验数据和理论数据吻合良好。