Cobalt(ii)-(dpyo)-dicarboxylate networks: Unique H-bonded assembly and rare bridging mode of dpyo in one of them [dpyo = 4,4′-dipyridyl N,N′-dioxide]

被引：71
作者：
Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Kolkata 7000 32, India [1 ]
不详 [2 ]
不详 [3 ]
机构：
[1] Department of Inorganic Chemistry, Indian Association for the Cultivation of Science
[2] Dipartimento di Scienze Chimiche, University of Trieste, 34127, Trieste
[3] Departament de Química Inorgànica, Universitat de Barcelona, 08028 Barcelona
来源：
Dalton Trans. | 2007年 / 14卷 / 1383-1391期
关键词：
Antiferromagnetism - Lattice constants - Single crystals - Supramolecular chemistry - Synthesis (chemical) - X ray diffraction analysis;
D O I：
10.1039/b617278d
中图分类号：
学科分类号：
摘要：
Polymeric networks, {[Co(dpyo)(ox)]yo)(fum)(H2O) 2]}n (2) and {[Co(dpyo)(tp)(H2O) 2]·[Co(H2O)6]·(tp)·(H 2O)}n (3) [ox = oxalate dianion, fum = fumarate dianion, tp = terephthalate dianion and dpyo = 4,4′-dipyridyl N,N′-dioxide] have been synthesized and characterized by single crystal X-ray diffraction analyses. The structural determination reveals 1 and 2 are covalent bonded 2D networks of 4,4 topology and of these, complex 2 undergoes a H-bonding scheme resulting in a 3D supramolecular architecture. Complex 3 is a 1D coordination polymer built up by almost collinear hexacoordinated Co(ii), doubly bridged by a tp carboxylate group and a dpyo oxygen, which in combination with lattice [Co(H2O)6]2+, tp and water molecules shows an unprecedented 3D supramolecular network through H-bonding. In the polymer the dpyo shows novel μ-4,4 bridging mode towards the cobalt ion. Low temperature magnetic interaction reveals antiferromagnetic coupling in all of the complexes. © The Royal Society of Chemistry.
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页码：1383 / 1391
页数：8
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