双核锰(III)与具有二-μ-乙酰基-μ-烷氧基桥联核的席夫碱配合物

IF 0.1 Q4 CRYSTALLOGRAPHY X-ray Structure Analysis Online Pub Date : 2020-03-10 DOI:10.2116/xraystruct.36.7
M. Mikuriya, Yoshiki Koyama, D. Yoshioka, R. Mitsuhashi
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引用次数: 3

摘要

单核、双核和四核锰配合物与有机配体的化学性质很有趣,与生物系统中的一些活性中心有关,如超氧化物歧化酶、过氧化氢酶和绿色植物中光系统II(PSII)的析氧复合物(OEC)。1到目前为止,单核、,和具有桥接烷氧基的双核Schiff碱配体1,3-双(亚水杨基氨基)2-丙醇(H3sap)及其取代基衍生物的多核锰配合物已出现在文献中。2–8在本研究中,我们分离出了一种新的与1,3-二(3-甲氧基亚水杨基氨基)2-丙烷(H3msap)的双核锰配合物,并测定了其晶体结构,其显示了具有一个烷氧基氧和两个-μ-缩醛桥的双核核,如图所示。1。本文介绍了[Mn2(msap)(μ-CH3COO)2(CH3COO)(CH3OH)](1)的合成、晶体结构和电子光谱。配体H3msap通过文献中描述的方法合成。7配合物通过H3msap和锰(II)盐的1:2反应制备。向H3msap(18.0 mg,0.05 mmol)的乙腈溶液(2 cm3)中加入24.9 mg(0.1 mmol)乙酸锰(II)四水合物的绝对甲醇溶液(1 cm3),然后滴三滴2020©日本分析化学学会
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Dinuclear Manganese(III) Complex with a Schiff-base Having a Di-μ-acetato-μ-alkoxido-bridged Core
The chemistry of mononuclear, dinuclear, and tetranuclear manganese complexes with organic ligands is interesting, having relevance to some active centers in biological systems, such as superoxide dismutase, catalase, and the oxygen-evolving complex (OEC) of photosystem II (PSII) in green plants.1 So far, mononuclear, dinuclear, tetranuclear, and polynuclear manganese complexes with dinucleating Schiff-base ligands having a bridging alkoxido-oxygen, 1,3-bis(salicylideneamino)2-propanol (H3sap) and its substituent derivatives, have appeared in the literature.2–8 In this study, we isolated a new dinuclear manganese complex with 1,3-bis(3-methoxysalicylideneamino)2-propanol (H3msap) and determined the crystal structure, which shows a dinuclear core with one alkoxido-oxygen and two-μ-acetato bridges, as shown in Fig. 1. This paper describes the synthesis, crystal structure and electronic spectra of [Mn2(msap)(μ-CH3COO)2(CH3COO)(CH3OH)] (1). The ligand H3msap was synthesized by a method described in the literature.7 The complex was prepared by a 1:2 reaction of H3msap and manganese(II) salt. To an acetonitrile solution (2 cm3) of H3msap (18.0 mg, 0.05 mmol) was added an absolute methanol solution (1 cm3) of 24.9 mg (0.1 mmol) of manganese(II) acetate tetrahydrate, and then three drops of 2020 © The Japan Society for Analytical Chemistry
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来源期刊
CiteScore
0.60
自引率
50.00%
发文量
17
期刊最新文献
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