Syntheses, structures and magnetic properties of Co(II) complexes based on H4BTEC and 2-(n-pyridyl)benzimidazole (n=2, 3, and 4)

	Syntheses, structures and magnetic properties of Co(II) complexes based on H4BTEC and 2-(n-pyridyl)benzimidazole (n=2, 3, and 4)
	C. K. Xia ; C. Z. Lu ; D. Q. Yuan ; Q. Z. Zhang ; X. Y. Wu ; J. J. Zhang ; D. M. Wu
刊名	Journal of Molecular Structure
	2007-04
卷号	831 期号:1-3 页码:195-202
关键词	benzimidazole supramolecular benzoate crystal structure self-organization hybrid material hydrogen-bonding coordination complex 2-dimensional coordination polymer crystal-structures acid copper(ii) chemistry
ISSN号	0022-2860
中文摘要	The hydrothermal reactions of cobalt(II) salts with 1,2,4,5-benzenetetracarboxylic acid (H4BTEC) and 2-(n-pyridyl)benzimidazole (n = 2, 3, 4) led to the formation of three new coordination complexes, Namely, [Co(BTEC)(0.5)(2-PyBIm) center dot H2O] center dot H2O (1), [Co(BTEC)(0.5)(3-PyBIm) - H2O] (2), [Co(H(2)BTEQ(4-PyBIm)(2)] center dot H2O (3) were studied. The H4BTEC ligands adopt different coordination modes according to the orientation of the pyridyl-sustituted benzimidazole. In complex 1, the BTEC4- acts as four-dentate bridging ligand with all carboxylate groups adopt unidentate coordination fashion, leading a two-dimensional coordination network. While in 2, two of the four carboxylate groups adopt chelating bi-dentate coordination mode, and the others demonstrate uni-dentate coordination fashion; leading a one-dimensional chain with the nearest Co center dot center dot center dot Co separation being 5.057 angstrom. In 3, the adjacent carboxylate groups chelate the cobalt(II) atom in the uni-dentate coordination fashion, leading a one-dimensional undulating chain. Finally, all the complexes are extended into three-dimensional framework via hydrogen-bonding as well as pi-pi interactions. The thermal stabilities and temperature-depen dent magnetic susceptibilities for the three complexes were also studied. (c) 2006 Elsevier B.V. All rights reserved.
语种	英语
公开日期	2013-04-01
内容类型	期刊论文
源URL	[http://ir.fjirsm.ac.cn/handle/350002/6759]
专题	福建物质结构研究所_中科院福建物质结构研究所_期刊论文
推荐引用方式 GB/T 7714	C. K. Xia,C. Z. Lu,D. Q. Yuan,et al. Syntheses, structures and magnetic properties of Co(II) complexes based on H4BTEC and 2-(n-pyridyl)benzimidazole (n=2, 3, and 4)[J]. Journal of Molecular Structure,2007,831(1-3):195-202.
APA	C. K. Xia.,C. Z. Lu.,D. Q. Yuan.,Q. Z. Zhang.,X. Y. Wu.,...&D. M. Wu.(2007).Syntheses, structures and magnetic properties of Co(II) complexes based on H4BTEC and 2-(n-pyridyl)benzimidazole (n=2, 3, and 4).Journal of Molecular Structure,831(1-3),195-202.
MLA	C. K. Xia,et al."Syntheses, structures and magnetic properties of Co(II) complexes based on H4BTEC and 2-(n-pyridyl)benzimidazole (n=2, 3, and 4)".Journal of Molecular Structure 831.1-3(2007):195-202.