杂双金属Cu(Ⅱ)-Nd(Ⅲ)和Zn(Ⅱ)-Ce(Ⅲ)的Salamo型配合物:合成、晶体结构和荧光性质 |
Heterobimetallic Cu(Ⅱ)-Nd(Ⅲ) and Zn(Ⅱ)-Ce(Ⅲ) Salamo-Type Complexes: Syntheses, Crystal Structures and Fluorescence Properties |
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摘要: 合成了2个异双核金属Salamo型配合物[Cu(L)Nd(NO3)3(C2H5OH)](1)和[Zn(L)(OAc)Ce(NO3)2(CH3OH)](2)(H2L=O,O'-(ethane-1,2-diyl)bis(1-(3-ethoxy-2-hydroxyphenyl)-3-ethoxy-2-hydroxybenzaldehyde oxime)),并通过元素分析、红外、紫外、荧光光谱和X射线晶体学对其进行了表征。配合物1是不对称的双核结构,其中Cu(Ⅱ)原子为五配位具有稍微扭曲的四方锥几何构型,而钕(Ⅲ)原子是十配位具有一种扭曲的双帽十二面几何构型。配合物2也是不对称的双核结构,其Zn(Ⅱ)原子为五配位具有一种介于四方锥和三角双锥体之间的几何构型,Ce(Ⅲ)原子为十配位采用了一种扭曲的双面十二面几何构型。与配体相比,在激发波长为318 nm时配合物1发生了荧光淬灭,而配合物2表现出荧光增强。 |
关键词: Salamo型配体 3d-4f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: Heterobinuclear 3d-4f complexes having chemical formulae[Cu(L)Nd(NO3)3(C2H5OH)] (1) and[Zn(L)(OAc)Ce(NO3)2(CH3OH)] (2) with a Salamo-type ligand O,O'-(ethane-1,2-diyl)bis(1-(3-ethoxy-2-hydroxyphenyl)-3-ethoxy-2-hydroxybenzaldehyde oxime) (H2L)were synthesized, and characterized by elemental analyses, IR, UV-Vis, fluorescence spectra and X-ray crystallography. Complex 1 is an asymmetrical dinuclear complex, the pentacoordinate Cu(Ⅱ) ion has a slightly distorted square pyramidal geometry, and deca-coordinated Nd(Ⅲ) ion possesses a distorted bicapped twelve surface geometry. Complex 2 is also an asymmetrical dinuclear complex, the penta-coordinate Zn(Ⅱ) ion bears a distorted square pyramidal geometry too, and deca-coordinated Ce(Ⅲ) ion adopts a distorted bicapped twelve surface geometry. Compared with the ligand H2L, complex 1 showed fluorescence quenching, while complex 2 exhibited the fluorescence enhancement when the excitation wavelength is 318 nm. |
Keywords: Salamo-type ligand 3d-4f complex synthesis crystal structure fluorescence property |
投稿时间:2018-01-10 修订日期:2018-03-16 |
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杨玉华,张雨,于盟,郑姗姗,董文魁.杂双金属Cu(Ⅱ)-Nd(Ⅲ)和Zn(Ⅱ)-Ce(Ⅲ)的Salamo型配合物:合成、晶体结构和荧光性质[J].无机化学学报,2018,34(5):997-1006. |
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