Steric effects in controlling co-ordination environment in zinc 2-nitrobenzoate complexes
Steric effects in controlling co-ordination environment in zinc 2-nitrobenzoate complexes
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DOI：
10.1016/j.ica.2008.01.044
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发表时间：
2008-06-27
影响因子：
2.8
通讯作者：
Baruah, Jubaraj B.
中科院分区：
文献类型：
--
作者：
Baruah, Abhilasha M.;Karmakar, Anirban;Baruah, Jubaraj B.
本文通过固相反应和溶液反应两步法合成了一种具有双（异）羧基配位模式的双核锌配合物。这种双核物质的形成是由所考虑的配体决定的。例如，含有1,10-菲罗啉的2-硝基苯甲酸锌配合物是单核的，而含有8-氨基喹啉的类似配合物是双核的，具有其（未识别的）羧基配位模式。根据单核和双核配合物的羧酸氧的不配位氧原子的分离距离解释了这种配合物形成的原因。含有2,2′-联吡啶的2-硝基苯甲酸锌配合物是单核的，而含有2-氨基嘧啶的配合物具有双核桨轮结构。在8-氨基喹啉存在下，2-硝基苯甲酸与醋酸锌（II）液相反应得到双-（8-氨基喹啉）2-硝基苯甲酸锌（II）。(C) 2008 Elsevier B.V.版权所有
A dinuclear zinc complex having exclusive bis(unidentate) carboxylato co-ordination mode is synthesized through two-step reactions, involving solid phase reaction followed by solution reaction. The formation of such dinuclear species is governed by the ligand under consideration. For example, 2-nitrobenzoate zinc complex having 1,10-phenanthroline is mononuclear whereas a similar complex with 8-aminoquinoline is dinuclear having bis(unidentate) carboxylato co-ordination mode. The reasons for the formation such complex is explained on the basis of the distance of separation of uncoordinated oxygen atoms of the carboxylate oxygen of mononuclear and dinuclear complexes. Zinc 2-nitrobenzoate complexes having 2,2'-bipyridine is mononuclear but with 2-aminopyrimidine has a dinuclear paddle wheel structure. Solution phase reaction of 2-nitrobenzoic acid with zinc(II)acetate in the presence of 8-aminoquinoline gives bis-(8-aminoquinoline)zinc(II) 2-nitrobenzoate. (C) 2008 Elsevier B.V. All rights reserved.