Cyanide-bridged tri- and tetra-nuclear spin crossover complexes
Cyanide-bridged tri- and tetra-nuclear spin crossover complexes
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DOI：
10.1016/j.poly.2008.10.051
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发表时间：
2009-06
期刊：
影响因子：
2.6
通讯作者：
M. Nihei;M. Ui;H. Oshio
中科院分区：
文献类型：
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作者：
M. Nihei;M. Ui;H. Oshio
氰化物桥联三核和四核配合物，[Fe2IIIFeII(CN)6(tp*)2(tpa)]·4MeCN·t-BuMeO (1) 和 [Fe4II(CN)4(bpy)4(bpym)4](PF6)4·6MeOH·4H2O (2) (tp*=氢化三(二甲基吡唑基)硼酸盐，合成了bpym=2,2'-联嘧啶）。化合物 1 具有由两个 [Fe(CN)3(tp*)]− 和一个 [Fe(tpa)]2+ 单元组成的直角三核核心，而 2 中的四核配合物具有由氰化物桥联的四个 Fe(II) 离子组成的方形核心。磁化率测量表明，两种配合物均表现出热诱导的自旋交叉。
Cyanide-bridged tri- and tetra-nuclear complexes, [Fe2IIIFeII(CN)6(tp∗)2(tpa)]·4MeCN·t-BuMeO (1) and [Fe4II(CN)4(bpy)4(bpym)4](PF6)4·6MeOH·4H2O (2) (tp∗=hydrotris(dimethylpyrazolyl)borate, bpym=2,2′-bipyrimidine), were synthesized. Compound 1 has a right angled trinuclear core composed of two [Fe(CN)3(tp∗)]−and one [Fe(tpa)]2+units, while the tetra-nuclear complex in 2 has a square core composed of cyanide-bridged four Fe(II) ions. Magnetic susceptibility measurements revealed that both complexes showed thermally induced spin crossover.