Synthesis, structure and magnetic properties of pyrazolate-bridged dinuclear complexes [{M(NCS)(4-Phpy)}2(μ-bpypz)2] (M = Co2+ and Fe2+)
Synthesis, structure and magnetic properties of pyrazolate-bridged dinuclear complexes [{M(NCS)(4-Phpy)}2(μ-bpypz)2] (M = Co2+ and Fe2+)
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DOI：
10.1016/j.poly.2005.03.047
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发表时间：
2005-11
期刊：
影响因子：
2.6
通讯作者：
Ko Yoneda;K. Nakano;J. Fujioka;Koichi Yamada;Takayoshi Suzuki;A. Fuyuhiro;S. Kawata;S. Kaizaki
中科院分区：
文献类型：
--
作者：
Ko Yoneda;K. Nakano;J. Fujioka;Koichi Yamada;Takayoshi Suzuki;A. Fuyuhiro;S. Kawata;S. Kaizaki
吡唑啉桥接双核配合物[{M(NCS)(4-Phpy)}2(μ-bpypz)2] (Hbpypz=3,5-双（2-吡啶基）-吡唑的合成与磁性表征4-Phpy = 4-phenylpyridine;描述了M=Co2+(1)和Fe2+(2)，并对钴配合物进行了x射线晶体分析。1的结构表明钴原子被配位到两个bpypz上形成二聚体，达到了期望的配位。x射线衍射图显示1和2在室温下是同构的。2显示了[HS-HS]和[LS-LS]态之间的单自旋交叉跃迁，Tc=150K。
The synthesis and magnetic characterization of pyrazolato-bridged dinuclear complexes [{M(NCS)(4-Phpy)}2(μ-bpypz)2] (Hbpypz=3,5-bis(2-pyridyl)-pyrazole; 4-Phpy=4-phenylpyridine; M=Co2+(1) and Fe2+(2)) are described together with the X-ray crystal analysis of the cobalt complex. The structure of 1 shows that the desired coordination has been achieved with the cobalt atoms being coordinated to two bpypz to form the dimer. The X-ray diffraction patterns show 1 and 2 to be isomorphous at room temperature. 2 displays a single spin-crossover transition between the [HS–HS] and [LS–LS] states with Tc=150K.