Two forms of a copper(II) complex of 3-phenyl-5-(2-pyridyl)-4-(4-pyridyl)-4H-1,2,4-triazole: a six-coordinate monomer versus a five-coordinate polymer
Two forms of a copper(II) complex of 3-phenyl-5-(2-pyridyl)-4-(4-pyridyl)-4H-1,2,4-triazole: a six-coordinate monomer versus a five-coordinate polymer
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DOI：
10.1016/j.ica.2004.03.044
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发表时间：
2004-08
影响因子：
2.8
通讯作者：
Marco H. Klingele;S. Brooker
中科院分区：
文献类型：
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作者：
Marco H. Klingele;S. Brooker
新的双向配体3-苯基-5-（2-吡啶基）-4-（4-吡啶基）-4H-1，2，4-三唑（pyppt）与Cu（ClO 4）2·6 H2O以2：1的摩尔比在乙醇中反应，得到了一种蓝绿色微晶固体配合物[CuII（pyppt）2（ClO 4）2]·H2O（1）。通过Et 2 O的蒸气扩散，配合物1从MeCN中重结晶，得到单体八面体配合物[CuII（pyppt）2（ClO 4）2]·MeCN（2）的蓝色晶体。相比之下，将EtOH加入到络合物1的MeCN溶液中，然后缓慢蒸发，得到五配位聚合物络合物{[CuII（pyppt）2]（ClO 4）2·EtOH}∞（3）的蓝色晶体。两种配合物的结构均由单晶X-射线衍射测定。
The reaction of the new bidirectional ligand 3-phenyl-5-(2-pyridyl)-4-(4-pyridyl)-4H-1,2,4-triazole (pyppt) with Cu(ClO4)2·6H2O in a 2:1 molar ratio in EtOH affords the complex [CuII(pyppt)2(ClO4)2]·H2O (1) as a microcrystalline turquoise solid. Recrystallisation of complex 1 from MeCN by vapour diffusion of Et2O gives blue crystals of the monomeric octahedral complex [CuII(pyppt)2(ClO4)2]·MeCN (2). In contrast, addition of EtOH to a solution of complex 1 in MeCN followed by slow evaporation yields blue crystals of the five-coordinate polymeric complex {[CuII(pyppt)2](ClO4)2·EtOH}∞(3). The structures of both complexes have been determined by single crystal X-ray diffraction.