Communication between iron(II) building blocks in cooperative spin transition phenomena

被引:550
作者
Real, JA
Gaspar, AB
Niel, V
Muñoz, MC
机构
[1] Univ Valencia, Fac Quim, Dept Quim Inorgan, Inst Ciencia Mol, E-46100 Burjassot, Spain
[2] Univ Politecn Valencia, Dept Fis Aplicada, E-46071 Valencia, Spain
关键词
molecular magnetism; spin transition; iron(II) complexes; supramolecular chemistry;
D O I
10.1016/S0010-8545(02)00220-5
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
In the present article we discuss the cooperative nature of the spin crossover phenomenon in iron(II) complexes, providing a perspective of the state of the art in this area. The first aspect we discuss is the role of the intermolecular interactions, more precisely the pi-interactions, in mononuclear complexes. We show that by playing with the nature of the ligands, aliphatic, aromatic, or extended aromatic, it is possible to create stronger cohesive forces and receive a more cooperative response from the compound. In the next step the singular family of bipyrimidine-bridged iron(II) dinuclear compounds is presented as the simplest example of polynuclear spin crossover complexes exhibiting a rich variety of magnetic behaviours, which stem from the synergistic effect between intramolecular and cooperative intermolecular interactions. Finally, a number of polymeric 1-3D architectures of varying dimensionality and topology are discussed in terms of the search for strong cooperative spin crossover systems. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:121 / 141
页数:21
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