喹啉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 Quinolyl and Pyridyl Substituted Triaryltriazoles

分别以3-(2-吡啶基)-4-(4-甲基苯基)-5-(2-喹啉基)-1,2,4-三氮唑(L1)和3-(2-吡啶基)-4-(4-氟苯基)-5-(2-喹啉基)-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(NO3)(H2O)]NO3·H2O(1)和trans-[Cu(L2)2(NO3)(H2O)]NO3·H2O(2),对其进行了红外、元素分析和单晶结构表征。2个配合物都属于三斜晶系,P1空间群。单晶结构表明,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[Cu N4O2],轴向上各有一个水分子和一个硝酸根配位。配体的吡啶氮原子和三氮唑的一个氮原子参与配位,而喹啉的氮原子不配位。配合物晶体中存在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。

Two new copper(Ⅱ)complexes,trans-[Cu(L1)2(NO3)(H2O)]NO3·H2O(1)and trans-[Cu(L2)2(NO3)(H2O)]NO3·H2O(2)(L1=3-(2-pyridyl)-4-(p-methylphenyl)-5-(2-quinolyl)-1,2,4-triazole,L2=3-(2-pyridyl)-4-(p-fluorophenyl)-5-(2-quinolyl)-1,2,4-triazole),were synthesized and characterized by FT-IR,elemental analyses and single-crystal X-ray crystallography.Both 1 and 2 crystallize in triclinic system with space group P1.X-ray crystallography analysis reveals that the copper ion in 1 and 2 lies in a distorted octahedral environment[Cu N4O2]with one nitrate and one water molecule,respectively in the trans-position.The L1or L2ligand coordinates with Cu(Ⅱ)via one pyridine N atom and one triazole N atom,while the quinolyl group does not take part in coordination.In 1and 2 there are some intermolecular O-H…O,C-H…O and C-H…N hydrogen bonds and C-H…πinteractions,connecting the mononuclear complexes to form a 3D framework.CCDC:1975981,1;1975982,2.