期刊
INORGANIC CHEMISTRY
卷 52, 期 9, 页码 5290-5299出版社
AMER CHEMICAL SOC
DOI: 10.1021/ic400237h
关键词
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资金
- Spanish Ministerio de Economia y Competitividad [MAT2010-20843-C02-01, MAT2008-05690/MAT, CTQ-2011-26507, FIS2009-12721, FIS2012-37549, ACI2009-0969]
- Comunidad de Madrid [CAM 09-S2009_MAT-1467]
- Gobierno Vasco [IT-280-07]
- Generalitat Valenciana [2009/95]
- EU [FP6-029192]
- Becas Fundacion Caja Madrid de Movilidad para Profesores de universidades publicas
In this work we have synthetized and characterized by X-ray diffraction five cobalt complexes with 6-thioguanine (6-ThioGH), 6-thioguanosine (6-ThioGuoH), or 2'-deoxy-6-thioguanosine (2'-d-6-ThioGuoH) ligands. In all cases, these ligands coordinate to cobalt via N7 and S6 forming a chelate ring. However, independently of reagents ratio, 6-ThioGH provided monodimensional cobalt(II) coordination polymers, in which the 6-ThioG(-) acts as bridging ligand. However, for 2'-d-6-ThioGuoH and 6-TliioGuoH, the structure directing effect of the sugar residue gives rise to mononuclear cobalt complexes which form extensive H-bond interactions to generate 3D supramolecular networks. Furthermore, with 2'-d-6-ThioGuoH the cobalt ion remains in the divalent state, whereas with 6-ThioGuoH oxidation occurs and Co(III) is found. The electrical and magnetic properties of the coordination polymers isolated have been studied and the results discussed with the aid of DFT calculations, in the context of molecular wires.
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