Control of assembly and magnetism of metal-dmit complexes by supramolecular cations

被引:80
作者
Akutagawa, T
Nakamura, T
机构
[1] Hokkaido Univ, Res Inst Elect Sci, Kita Ku, Sapporo, Hokkaido 0600812, Japan
[2] Japan Sci & Technol Corp, PRESTO, Kawaguchi 3320012, Japan
关键词
supramolecular cations; ni(dmit)(2); crown ethers; molecular magnets;
D O I
10.1016/S0010-8545(01)00432-5
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The assembly of monovalent species of [Ni(dmit)(2)] (dmit(2-) = 2-thioxo-1,3-dithiole-4,5-dithiolate), which bear S = 1/2 spin on each molecule, was controlled by using crown-ether based supramolecular cations. We could regulate the shape and valence of the supramolecular cations by changing the ring size of the crown ethers as well. as the metal cations included. Since the structure of the ionic crystals is mainly determined by the Madelung energy and the Leanard-Jones potential (shape of molecules), a large diversity in crystal structure was observed. A relationship between the overlap of [Ni(dmit)(2)] frontier orbitals and the magnetism is discussed. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
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页码:3 / 9
页数:7
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