The compound (I), 4-(1-benzyl-5-methyl-1H-1,2,3-triazol-4-yl)-6-(o-tolyl)pyrimidin-2-amine (C21H20N6), was synthesized and structurally characterized by elemental analysis, 1H NMR and 13C NMR and single crystal X-ray diffraction. The compound crystallizes as a colourless needle shaped in the monoclinic system, space group P21/n with cell constants: a = 11.2942(16) Å, b = 16.1209(18) Å, c = 10.6253(14) Å, a = g = 90°, b = 106.898 (5)°, V = 1851 (4) Å3, Z = 4. In the compound, the triazole and the pyrimidine rings are essentially planar. The molecular conformation is stabilized by an intramolecular C-H…N hydrogen bond, which generates an S(6) ring motif. The crystal packing is stabilized by intermolecular N-H…N and C-H…p hydrogen bonds thereby generating a three-dimensional supramolecular network. The molecular geometry was also optimized using density functional theory using (DFT/B3LYP) method with the 6-311G (d, p) basis set and compared with the experimental data.
                                    合成了化合物 (I),即 4-(1-苄基-5-甲基-
1H-1,2,3-三唑-4-基)-6-(邻
甲苯基)
嘧啶-2-胺 (
C21H20N6),并通过元素分析、1H NMR 和 13C NMR 以及单晶 X 射线衍射对其结构进行了表征。该化合物呈无色针状单斜晶系结晶,空间群为 P21/n,晶胞常数为:a = 11.2942(16) Å,b = 16.1209(18) Å,c = 10.6253(14) Å,a = g = 90°,b = 106.898 (5)°,V = 1851 (4) Å3,Z = 4。在该化合物中,三唑环和
嘧啶环基本上是平面的。分子构象由分子内的 C-H...N 氢键稳定,该氢键产生了一个 S(6) 环图案。分子间的 N-H...N 和 C-H...p 氢键稳定了晶体的堆积,从而形成了一个三维超分子网络。此外,还利用密度泛函理论(DFT/B3LYP)方法和 6-311G (d, p) 基集对分子几何形状进行了优化,并与实验数据进行了比较。