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.

引用

页码：1383 / 1391

页数：8

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