| 两个三核钴(II)Salamo型配合物的合成、晶体结构、溶剂效应和荧光性质 | |
| Two Trinuclear Cobalt(II) Salamo-Type Complexes: Syntheses, Crystal Structures, Solvent Effect and Fluorescent Properties | |
| 摘要: 通过四水乙酸钴（Ⅱ）和Salamo型双肟配体4，4'-二硝基-2，2'-（1，2-乙二氧双（氮次甲基））二酚（H2L）在不同溶剂中的配位反应，合成了2种不同溶剂参与配位的三核钴（Ⅱ）配合物，即[Co3L（OAc）2（CH3CH2OH）2]·2CH3CH2OH·2CHCl3（1）和[Co3L（OAc）2（C3H7OH）2]（2），并通过元素分析、红外光谱、紫外-可见光谱和单晶X射线衍射法对其进行了性质表征。在配合物1和2中，存在2个配体单元（提供N2O2配位原子），2个乙酸根离子，2个配位的乙醇或正丙醇分子。虽然2个配合物是在不同溶剂中合成的，但配合物中的钴（Ⅱ）离子均采用稍微扭曲的八面体几何构型。结果表明，溶剂效应在配合物的配位环境中起了关键的作用。另外，配合物1和2在激发波长为450 nm时能表现出强烈的光致发光，其最大发射波长分别为568和566 nm。 | |
| 关键词: Salamo型双肟配体 钴(II)配合物 合成 晶体结构 荧光性质 | |
| 基金项目: 国家自然科学基金（No.21361015，21761018）资助项目。 | |
| Abstract: Two trinuclear Co(Ⅱ) complexes,[Co3L(OAc)2(CH3CH2OH)2]·2CH3CH2OH·2CHCl3 (1) and[Co3L(OAc)2(C3H7OH)2] (2) were synthesized by the reaction of a new Salamo-type bisoxime chelating ligand of 4,4'-dinitro-2,2'-(1,2-ethylenedioxybis(nitrilomethylidyne))diphenol (H2L) with cobalt(Ⅱ) acetate tetrahydrate in different solvents. Complexes 1 and 2 were characterized by elemental analyses, IR and UV-Vis spectra, and single crystal X-ray diffraction methods. In complexes 1 and 2, there are two ligand L2- moieties (which provide N2O2 donors), two acetate ions, two coordinated ethanol or n-propanol molecules, respectively. Although the two complexes were synthesized in different solvents, it is worthwhile that the Co(Ⅱ) ions in the structures of the two complexes adopt slightly distorted hexa-coordinated geometries. As a result, solvent effect was assumed to have played a crucial role in their coordination environment. In addition, when excited at 450 nm, the complexes 1 and 2 show an intense photoluminescence with maximum emission at ca. 568 and 566 nm, respectively. | |
| Keywords: Salamo-type bisoxime ligand Co (II) complex synthesis crystal structure luminescence property | |
| 投稿时间：2017-07-27 修订日期：2017-12-07 | |
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| 王莉,康全鹏,郝静,张阳,白杨,董文魁.两个三核钴(II)Salamo型配合物的合成、晶体结构、溶剂效应和荧光性质[J].无机化学学报,2018,34(3):525-533. | |
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