Kazak Canan, Yilmaz Veysel T, Servi Suleyman, Koca Murat, Heinemann Frank W
Department of Physics, Faculty of Arts and Sciences, Ondokuz Mayis University, 55139 Kurupelit, Samsun, Turkey.
Acta Crystallogr C. 2005 Jun;61(Pt 6):o348-50. doi: 10.1107/S0108270105009844. Epub 2005 May 13.
The title compounds, 1,3-dibenzoylimidazolidine-2-thione, C17H14N2O2S, (I), and 1,3-dibenzoyl-3,4,5,6-tetrahydropyrimidine-2(1H)-thione, C18H16N2O2S, (II), were obtained from the reactions of imidazolidine-2-thione and 1,4,5,6-tetrahydropyrimidine-2-thiol, respectively, with benzoyl chloride. Compounds (I) and (II) contain, respectively, imidazolidinethione [C=S = 1.6509 (14) A] and pyrimidinethione [C=S = 1.6918 (19) A] moieties bonded to two benzoyl rings. The molecules of (I) exhibit C2 symmetry, the C=S bond lying along the twofold rotation axis, while the molecules of (II) have mirror symmetry (Cs). The imidazolidine ring in (I) is essentially planar, while the pyrimidine ring in (II) adopts a boat conformation. Molecules of (I) are linked by weak intermolecular C-H...O interactions, while molecules of (II) are held together by van der Waals interactions.
标题化合物1,3 - 二苯甲酰基咪唑烷 - 2 - 硫酮（C₁₇H₁₄N₂O₂S，（I））和1,3 - 二苯甲酰基 - 3,4,5,6 - 四氢嘧啶 - 2(1H) - 硫酮（C₁₈H₁₆N₂O₂S，（II））分别由咪唑烷 - 2 - 硫酮和1,4,5,6 - 四氢嘧啶 - 2 - 硫醇与苯甲酰氯反应制得。化合物（I）和（II）分别含有与两个苯甲酰环相连的咪唑烷硫酮[C = S = 1.6509 (14) Å]和嘧啶硫酮[C = S = 1.6918 (19) Å]部分。（I）的分子具有C₂对称性，C = S键沿二重旋转轴排列，而（II）的分子具有镜像对称性（Cs）。（I）中的咪唑烷环基本呈平面状，而（II）中的嘧啶环呈船式构象。（I）的分子通过弱分子间C - H...O相互作用相连，而（II）的分子通过范德华相互作用聚集在一起。
