First Example of a Mixed Valence MnIIIMnIIMnIII Schiff-Base Polymeric Complex having a Trimeric Repeat Unit. Crystal Structure of [Mn3(HL)2(acetato)2(5-Cl-salicylato)2]n
First Example of a Mixed Valence MnIIIMnIIMnIII Schiff-Base Polymeric Complex having a Trimeric Repeat Unit. Crystal Structure of [Mn3(HL)2(acetato)2(5-Cl-salicylato)2]n
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DOI：
10.1021/ic00114a002
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发表时间：
1995-05
影响因子：
4.6
通讯作者：
Dora A. Malamatari;Panagiota Hitou;A. Hatzidimitriou;Frank Inscore;A. Gourdon;M. Kirk;D. Kessissoglou
中科院分区：
文献类型：
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作者：
Dora A. Malamatari;Panagiota Hitou;A. Hatzidimitriou;Frank Inscore;A. Gourdon;M. Kirk;D. Kessissoglou
自然界中最重要的过程之一发生在光系统II（PSII）的放氧复合物（OEC）中，其中水的四电子氧化为分子氧被认为是由四个锰离子的簇催化的。1-5现有的数据强烈表明，一个多核簇是负责EPR可检测的信号在Si（g= 4.8平行极化）和S2（g= 2多线和g= 4.1与精细结构）氧化态的OEC。7我们以前的工作集中在制备和表征各种单核，双核和三核配合物，主要是氧衍生的供体配体，以了解基本的协调，结构和磁化学的配合物可能相关的活性位点的OEC。6许多工作者已经制备了含有n2-氧代8和羧基桥的双核或三核配合物。9* 然而，合成的聚合物复合物很少。66· 10-12在这篇通讯中，我们报道了[Mnra 2 Mnn（Hsaladhp）2（acetylate）2（5-Cl-salicylato）2]的合成和表征。
One of the most important processes in nature occurs in the oxygen evolving complex (OEC) of photosystem II (PSII), where the four electron oxidation of water to molecular oxygen is believed to be catalyzed by a cluster of four manganese ions. 1-5 The available data strongly suggest that a polynuclear cluster is responsible for the EPR detectable signals in the Si (g= 4.8 in parallel polarization) and S2 (g= 2 multiline and g= 4.1 with fine structure) oxidation states of the OEC. 7 Our previous efforts have centered on the preparation and characterization of a variety of mononuclear, binuclear and trinuclear complexes with predominantly oxygen-derived donor ligands in order to understand the fundamental coordination, structural, and magnetochemistry of complexes potentially relevant to theactive site of the OEC. 6 A number of workers have prepared binuclear or trinuclear complexes containing «2-oxo8 and carboxylato bridges. 9**** However, very few polymeric complexes have beensynthesized. 66· 10-12 In this communication, we report the synthesis and characterization of [Mnra2Mnn (Hsaladhp) 2 (acetato) 2 (5-Cl-salicylato) 2]„