Synthesis and Crystal Structure of a Compound with Two Conformational Isomers: N-(2-methylbenzoyl)-N′-(4-nitrophenyl)thiourea
作者:Qian-Jin Li、Chun-Long Yang
DOI:10.1007/s10870-008-9413-z
日期:2008.12
The single crystal of the title compound (C15H13N3O3S) with two conformational isomers was obtained from the solution of the title compound dissolved in the N,N-dimethylformamide (DMF) by slow evaporation at room temperature. The crystal is triclinic, space group P-1 with a = 10.418(2), b = 10.758(2), c = 14.494(3) Å, α = 71.07(3), β = 81.56(3), γ = 85.61(3)º, V = 1519.2(5) Å3, Z = 2, C30H26N6O6S2, D c = 1.379 g/cm3, μ(MoKα) = 0.229 mm−1, S = 0.994, F(000) = 656, R = 0.0688 and wR = 0.1695. In the unit cell, there are two independent molecules having only slightly different bond lengths and angles, but the corresponding dihedral angles of the two molecules are different. Intermolecular N–H···S and N–H···O hydrogen bonds forming R 2 2(8) and R 2 2(12) rings, respectively, link the molecules into ribbons. In the unit cell, there are two independent molecules having only slightly different bond lengths and angles between them, but different corresponding dihedral angles.
将标题化合物溶解在N,N-二甲基甲酰胺(DMF)中的溶液在室温下缓慢蒸发,得到具有两种构象异构体的标题化合物(C15H13N3O3S)的单晶。该晶体为三斜晶系,空间群 P-1,a = 10.418(2)、b = 10.758(2)、c = 14.494(3) Å、α = 71.07(3)、β = 81.56(3)、γ = 85.61 (3)°, V = 1519.2(5) Å3, Z = 2, C30H26N6O6S2, DC = 1.379 g/cm3, μ(MoKα) = 0.229 mm−1, S = 0.994, F(000) = 656, R = 0.0688 且 wR = 0.1695。在晶胞中,有两个独立的分子,其键长和键角仅略有不同,但两个分子相应的二面角不同。分子间N–H·S和N–H·O氢键分别形成R 2 2(8) 和R 2 2(12) 环,将分子连接成带状。在晶胞中,有两个独立的分子,它们之间的键长和角度仅略有不同,但相应的二面角不同。