Use of the dicarboxylate ligand m-phenylenedipropionate for the synthesis of new Mn/O clusters.: Synthesis, characterization and magnetic properties

被引：22

作者：

Cañada-Vilalta, C

Huffman, JC

Streib, WE

Davidson, ER

Christou, G ^{[1
]}

机构：

[1] Indiana Univ, Dept Chem, Bloomington, IN 47405 USA

[2] Indiana Univ, Ctr Mol Struct, Bloomington, IN 47405 USA

来源：

POLYHEDRON | 2001年 / 20卷 / 11-14期

关键词：

m-phenylenedipropionate; dicarboxylate ligand; Mn/O clusters; acetate analogs;

D O I：

10.1016/S0277-5387(01)00622-2

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The quest for new Mn clusters that display large spin ground states or that can serve as a synthetic model for the water oxidation center in PSII has been pursued by using the dicarboxylate ligand m-phenylenedipropionate (mpdp(2-)). Ligand substitution of the acetate groups by this ligand in preformed clusters yields the compounds [Mn2O(mpdp)-(bpy)(2)(MeCN)(H2O)](ClO4)(2) (1) and [Mn3O(mpdp)(3)(py)(3)](ClO4) (2), both similar in structure and properties to their acetate analogs. In a different reaction, mpdp(2-) has allowed access to [Mn6O7(mpdp)(3)(bpy)(3)](ClO4) (3), a new structural type whose electronic structure has been explored by measurements of its DC susceptibility and data indicate that it possesses a S = 3/2 ground slate. (C) 2001 Elsevier Science Ltd. All rights reserved.

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页码：1375 / 1380

页数：6

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