| 含樟脑衍生物氰基桥联双金属配合物的合成、结构及磁性质(英文) |
| Synthesis, Crystal Structures, and Magnetic Properties of Two Cyano-bridged Heterobimetallic Complexes with Camphor Derivative Ligands |
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| 摘要: 采用樟脑衍生物为配体，分别合成了氰基桥联Cu(Ⅱ)-Fe(Ⅲ)-Cu(Ⅱ)三核配合物[{Cu(D,L-La)2}2Fe(CN)6](ClO4) (1)和Mn(Ⅲ)-Fe(Ⅲ)双核配合物[Mn(D,L-Lb)(DMF)(Tp)Fe(CN)3]·(H2O)6 (2)。晶体结构分析表明，化合物1中Cu(Ⅱ)离子处于五配位的配位环境，分别和1个D-La，1个L-La及[Fe(CN)6]3-中的1个氰基配位，2个Cu(Ⅱ)离子通过[Fe(CN)6]3-桥联。通过分子间氢键作用，化合物1形成二维超分子网络结构。化合物2中，[(Tp)Fe(CN)3]-通过其中的1个氰基与[Mn(D，L-Lb)]+桥联，其中Mn(Ⅲ)离子为六配位，分别和四齿配体Lb的2个氧原子和2个氮原子、DMF的1个氧原子及[(Tp)Fe(CN)3]-中的氰基氮原子配位。磁性研究表明，在化合物1中，Cu(Ⅱ)离子与Fe(Ⅲ)离子之间表现出铁磁相互作用，用哈密顿函数H=-2J(S1·S2+S2·S3)对其χMT-T曲线进行拟合，得到1的朗日因子g为2.190，交换常数J为0.55 cm-1。 |
| 关键词: 樟脑衍生物 氰基桥联 异核配合物 晶体结构 磁性质 |
| 基金项目: |
| Abstract: A cyano-bridged trinuclear CuⅡ2FeⅢ complex [{Cu(D,L-La)2}2Fe(CN)6](ClO4) (1) (La=1,2,2-trimethylcy-clopentane-1,3-diamine) and a cyano-bridged binuclear MnⅢ-FeⅢ complex [Mn(D,L-Lb)(DMF)(Tp)Fe(CN)3]·(H2O)6 (2) (Lb=cis-N,N′-(2-Hydroxybenzylidene)-1,2,2-trimethylcyclopenta-1,3-diamine) have been prepared and charact-erized. X-ray crystal structure analysis for complex 1 reveals that the copper ion is penta-coordinated by a D- and a L-diamine ligand, and two copper ions are bridge-connected by two cyanides from [Fe(CN)6]3- in axial position. It shows a two-dimensional supramolecular network through hydrogen-bonding interaction. In complex 2, the manganese ion is six-coordinated by two oxygen atoms and two nitrogen atoms from a quadridentate ligand Lb, as well as one oxygen atom from DMF and one cyanide nitrogen atom from [(Tp)Fe(CN)3]- in axial positions. Magnetic study shows intramolecular ferromagnetic interactions in complex 1. The best-fit for χMT vs T using the model, H=-2J(S1·S2+S2·S3), leads to the parameters J=0.551 cm-1 and g=2.190. CCDC: 626440, 1; 626439, 2. |
| Keywords: camphor derivatives cyanide bridging heterobimetallic complexes crystal structures magnetic properties |
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| 韦佳,梁晓强,李一志,左景林,游效曾.含樟脑衍生物氰基桥联双金属配合物的合成、结构及磁性质(英文)[J].无机化学学报,2007,23(3):473-478. |
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