| 噻吩和吡啶取代三芳基三唑的两个铜配合物的合成与晶体结构 | |
| Syntheses and Crystal Structures of Two Copper Complexes Based on Thienyl and Pyridyl Substituted Triaryltriazoles | |
| 摘要: 分别以3-（2-吡啶基）-4-苯基-5-（2-噻吩基）-1，2，4-三氮唑（L1）和3-（2-吡啶基）-4-（4-氯苯基）-5-（2-噻吩基）-1，2，4-三氮唑（L2）作为配体，合成了2个新的单核铜配合物：trans-[Cu（L1）2（MeOH）2]（ClO4）2（1）和trans-[Cu（L2）2（ClO4）2]·2MeCN（2），并对其进行了红外、元素分析、单晶结构和粉末X射线衍射表征。2个配合物都属于单斜晶系，P21/c空间群。单晶结构分析表明，配合物1和2中的铜离子均处于一个扭曲的八面体配位环境[CuN4O2]，其中1的轴向由2个甲醇分子配位，而2的轴向由2个高氯酸根配位。处于赤道面的配体的吡啶N原子和三氮唑的一个N原子采用螯合双齿模式参与配位，而噻吩不配位。配合物2含2个乙腈客体分子，乙腈与三氮唑环之间存在π…π堆积作用。配合物1和2中存在O-H…O、C-H…O、C-H…N氢键和C-H…π相互作用，从而连接单核配合物形成三维网络。 | |
| 关键词: 合成 铜配合物 晶体结构 三芳基三氮唑 | |
| 基金项目: 江苏省自然科学基金（No.BK20181374）和南京大学配位化学国家重点实验室开放课题资助。 | |
| Abstract: Two new copper(Ⅱ) complexes, trans-[Cu(L1)2(MeOH)2](ClO4)2 (1) and trans-[Cu(L2)2(ClO4)2]·2MeCN (2) (L1=3-(2-pyridyl)-4-phenyl-5-(2-thienyl)-1,2,4-triazole, L2=3-(2-pyridyl)-4-(p-chlorophenyl)-5-(2-thienyl)-1,2,4triazole), were synthesized and structurally characterized by FT-IR, elemental analyses, single-crystal X-ray crystallography and powder X-ray diffraction. Both 1 and 2 crystallize in monoclinic system with a space group P21/c. Xray crystallography analysis reveals that the copper ion in 1 and 2 sits in a distorted octahedral environment[CuN4O2] with two MeOH in the trans-position in 1 but two ClO4- in the trans-position in 2. Each L ligand in the equatorial plane adopts a chelating bidentate mode through the pyridyl N atom and one triazole N atom, while the thienyl group does not coordinate. 2 contains two MeCN guest molecules which produce π-π stacking interactions with the triazole ring. In 1 and 2 there are some intermolecular O-H…O, C-H…O and C-H…N hydrogen bonds and C-H…π interactions, linking the mononuclear complexes to form a 3D framework. | |
| Keywords: synthesis Cu(Ⅱ) complex crystal structure triaryltriazole | |
| 投稿时间：2020-09-21 修订日期：2020-09-21 | |
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| 李刚,冯哲,聂荣荣,朱敦如.噻吩和吡啶取代三芳基三唑的两个铜配合物的合成与晶体结构[J].无机化学学报,2021,37(3):561-568. | |
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