| 不对称三芳基三氮唑的钴配合物中三氮唑-吡啶间二面角的反常变化(英文) | |
| Abnormal Change of Triazole-pyridyl Dihedral Angle in a Co(Ⅱ) Complex with Asymmetrical Substituted Triaryltriazoles | |
| 摘要: 以3-对甲氧基苯基-4-对溴苯基-5-(2-吡啶基)-1,2,4-三氮唑(L)作为配体,合成了1个钴配合物[CoL2(H2O)2](ClO4)2·2C2H5OH，对其进行了红外、电喷雾质谱、热重分析和单晶结构表征，该配合物属于单斜晶系，空间群P21/n，a=0.876 3(5) nm，b=3.384 4(18) nm，c=0.920 3(5) nm，β=102.961(8)°，V=2.660(2) nm3，Z=2，R1=0.064 4。单晶结构表明，钴离子处于1个扭曲的八面体配位环境中，2个水分子呈反式配位，每个配体L通过三氮唑上的1个氮原子和吡啶氮原子参与配位。配体配位后三氮唑-吡啶间二面角反而变大。热重分析表明该配合物在345 ℃开始发生分解。 | |
| 关键词: 钴配合物 晶体结构 三氮唑 | |
| 基金项目: | |
| Abstract: A cobalt(Ⅱ) complex, trans-[CoL2(H2O)2](ClO4)2·2C2H5OH, (L=3-(p-methoxyphenyl)-4-(p-bromophenyl)-5 -(2-pyridyl)-1,2,4-triazole), was synthesized and characterized by FT-IR, ESI-MS, TGA and X-ray crystallography. The complex crystallizes in monoclinic system with space group P21/n, a=0.876 3(5) nm, b=3.384 4(18) nm, c=0.920 3(5) nm, β=102.961(8)°, V=2.660(2) nm3, Z=2 with final R=0.064 4. The cobalt atom lies in a distorted octahedral environment with two water molecules in the trans positions. The ligand L coordinates via one triazole nitrogen and pyridine nitrogen atom. The triazole-pyridyl dihedral angle in the complex is larger than that in the free L ligand. The TG analysis shows that the complex is stable below 345 ℃. CCDC: 859546. | |
| Keywords: Co(Ⅱ) complex crystal structure 1,2,4-triazole | |
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| 江静静,陈 浪,赵 建,沈 旋,许 岩,朱敦如.不对称三芳基三氮唑的钴配合物中三氮唑-吡啶间二面角的反常变化(英文)[J].无机化学学报,2012,28(9):1940-1944. | |
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