| 两个含草酸根及硫氰酸根的新型三脚架钴(Ⅱ)配合物的合成、晶体结构及光谱性质(英) |
| Synthesis, Crystal Structures and Spectral Properties of Two New Cobalt Complexes of Tripodal Ligand with Oxalate and Thiocyanate |
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| 摘要: 本文合成了两个新型Co(Ⅱ)配合物，[LCo(μ-C2O4)CoL]·(ClO4)2·2CH3CN (1)和[CoL(SCN)]·ClO4 (2)，其中，L即三(3，5-二甲基吡唑甲基)胺。在配合物1中，Co与来自三脚架配体的4个氮和草酸根桥联配体的2个氧原子配位，处于扭曲八面体配位环境。由草酸根桥联两套LCo，构成了一个双核结构。在单核配合物2中，Co(Ⅱ)处于三角双锥配位构型，SCN-通过N配位与中心离子Co(Ⅱ)键联。在同一晶胞中有两个构型略微不同的分子，两个分子之间通过SCN的S原子有弱相互作用。对化合物1和2在溶液中的光谱性质做了进一步的研究和讨论。 |
| 关键词: 钴(Ⅱ)配合物 三(3，5-二甲基吡唑甲基)胺 草酸根桥联 晶体结构 光谱 |
| 基金项目: |
| Abstract: Two novel cobalt complexes, [LCo(μ-oxalate)CoL)·(ClO4)2·2CH3CN (1) and [CoL(SCN)]·ClO4 (2) have been synthesized, and their structures have been determined by X-ray crystallography, where L is tris[(3,5-dimethylpyrazol-l-yl)methyl]amine. In compound 1, Co(Ⅱ) is in a distorted octahedron environment with four nitrogen atoms from the tripodal ligand and two oxygen atoms from the bridged oxalate, and the molecule is a dimmeric structure consisting of two LCo unites linked by bridging oxalate. In the monomer 2, Co(Ⅱ) center is in trigonal bipyrimad coordination configuration, a thiocyanate group is bonded to the metal center through the nitrogen atom. There are two somewhat different configurations of 2 in the unit cell, and there is a weaker interaction between two molecules of 2 at sulphur atoms. The title complexes were generated by a precursor mononuclear cobalt(Ⅱ) complex [CoL(N3)]·ClO4 (3). Their spectral properties in solution have been further studied and discussed. CCDC: 244798, 1; 244799, 2. |
| Keywords: Cobalt (Ⅱ) complex tris [(3,5-dimethylpyrazol-l-yl)methyl]amine oxalate bridging crystal structure spectra |
| 投稿时间：2004-08-22 修订日期：2004-12-29 |
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| 张智慧,陆艳春,杨海龙,汤宇.两个含草酸根及硫氰酸根的新型三脚架钴(Ⅱ)配合物的合成、晶体结构及光谱性质(英)[J].无机化学学报,2005,21(4):477-482. |
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