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	Synthesis, structures and hydrolytic properties of metal complexes with 1,3-bis (4-methyl-5-imidazol-1-yl)ethylideneamino propan-2-ol
	Long, L. S. ; Long LS(龙腊生) ; Chen, X. M. ; Yu, X. L. ; Zhou, Z. Y. ; Ji, L. N.
	1999
关键词	poly-imidazole Schiff base crystal structure hydrolysis
英文摘要	Synthesis of a polydentate ligand comprising imidazole donors, 1,3-bis[(4-methyl-5-imidazol-1-yl)ethylideneamino]propan-2-ol (BIPO), and its Zn-II (1), Mn-II (2), Ni-II (3) and Cu-II (4) complexes are reported. Single-crystal structural analysis shows that complex 1 adopts a distorted square-pyramidal coordination geometry with the basal positions occupied by the four nitrogen atoms of a tetradentate BIPO ligand and the apical position by a water molecule, complexes 2 and 3 exhibit elongated octahedral coordination geometries with the axial positions occupied by a pair of aqua molecules, whereas complex 4 exhibits an elongated octahedral geometry with the axial positions occupied by an aqua molecule and a perchlorate oxygen atom. The crystal structures of the four complexes are discussed in relation to the preference of zinc ion in carbonic anhydrase, and suggest that in the presence of nitrogen donor ligands, Zn-II has a significant tendency to form a four- or five-coordination. Hydrolysis of 4-nitrophenyl acetate with complexes 1-3 shows that the k(obs) for complexes 1, 2 and 3 were 2.74 X 10(-2) +/- 0.01, 1.45 X 10(-2) +/- 0.01 and 0.98 X 10(-2) +/- 0.01 M-1 s(-1), respectively. (C) 1999 Elsevier Science Ltd. All rights reserved.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/64765]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Long, L. S.,Long LS,Chen, X. M.,et al. Synthesis, structures and hydrolytic properties of metal complexes with 1,3-bis (4-methyl-5-imidazol-1-yl)ethylideneamino propan-2-ol[J],1999.
APA	Long, L. S.,龙腊生,Chen, X. M.,Yu, X. L.,Zhou, Z. Y.,&Ji, L. N..(1999).Synthesis, structures and hydrolytic properties of metal complexes with 1,3-bis (4-methyl-5-imidazol-1-yl)ethylideneamino propan-2-ol..
MLA	Long, L. S.,et al."Synthesis, structures and hydrolytic properties of metal complexes with 1,3-bis (4-methyl-5-imidazol-1-yl)ethylideneamino propan-2-ol".(1999).

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