两个二亚胺及双膦配体混配铜(Ⅰ)配合物的合成、结构与太赫兹光谱
Syntheses, Crystal Structures and Terahertz Spectra of Two Copper(Ⅰ) Complexes Based on Mixed Diimines and Diphosphine Ligands
作者单位E-mail
孙振洲 首都师范大学化学系, 北京 100048
中国科学院福建物质结构研究所, 结构化学国家重点实验室, 福州 350002 
 
孙凌志 首都师范大学化学系, 北京 100048  
朱宁 首都师范大学化学系, 北京 100048  
匡晓楠 首都师范大学化学系, 北京 100048  
杨玉平 中央民族大学理学院, 北京 100081  
李中峰 首都师范大学化学系, 北京 100048  
金琼花 首都师范大学化学系, 北京 100048
中国科学院福建物质结构研究所, 结构化学国家重点实验室, 福州 350002 
jinqh@cnu.edu.cn 
张江威 洁净能源国家实验室&催化基础国家重点实验室, 中国科学院大连化学物理研究所, 大连 116023 jwzhang@dicp.ac.cn 
摘要: 在甲醇和二氯甲烷混合溶液中制备了2个二亚胺、双膦配体混配的铜(Ⅰ)配合物[Cu2(Dpq)2(dppBz)2](SCN)2·0.5Dpq·3CH3OH(1)和[Cu2(Dppz)2(dppb)2](BF42·2CH3OH·2H2O(2)(Dppz=二吡啶[3,2-a∶2',3'-c]并吩嗪,Dpq=吡嗪并[2,3-f][1,10]菲咯啉,dppBz=1,2-双(二苯基磷基)苯,dppb=1,4-双(二苯膦基)丁烷),通过X射线单晶衍射确定了配合物的精确结构,并使用元素分析、核磁共振氢谱、红外光谱、紫外可见吸收光谱、荧光光谱、太赫兹时域光谱(THz-TDS)对配合物进行了表征。1的晶胞中包含2个独立的金属中心,还含有0.5个未配位的Dpq分子,类似结构较为少见;而2为通过双膦配体桥联形成新颖的双核结构。通过弱相互作用力分析可知1为三维立体堆积结构,结构中含有独特的C-S…π作用;2通过C-H…πππ作用形成一维无限链,大量弱相互作用的存在使配合物更加稳定。发射光谱表明配合物1在578 nm处有较强的发射,而2在547 nm有绿光发射。配合物2的THz-TDS图中在1.2 THz处的尖锐峰是由C-H…F弱相互作用引起的。
关键词: 铜(Ⅰ)配合物  荧光  分子间作用力  太赫兹时域光谱
基金项目: 国家自然科学基金(No.21171119,81573822,11574408,21671144,21701168)、北京市自然科学基金(No.2172017,2172012)和辽宁省自然科学基金(No.20180510050)资助项目。
Abstract: Two copper (Ⅰ) complexes with diimine and diphosphine ligands, [Cu2(Dpq)2(dppBz)2] (SCN)2·0.5Dpq·3CH3OH (1) and [Cu2(Dppz)2(dppb)2](BF4)2·2CH3OH·2H2O (2) (Dppz=dipyrido[3,2-a∶2',3'-c]phenazine, Dpq=pyrazino[2,3-f][1,10]phenanthroline, dppBz=1,2-bis(diphenylphosphino)benzene, dppb=1,3-bis(diphenylphosphine)butane), were prepared in the mixed solution of methanol and dichloromethane. The structure of these two complexes were determined by X-ray single crystal diffraction and characterized by elemental analysis, NMR, FT-IR, UV-Vis absorption spectrum, fluorescence spectrum and terahertz time-domain spectroscopy (THz-TDS). The unit cell of 1 contains two independent metal centers and half uncoordinated Dpq molecule, and similar structures are very rare. However, complex 2 are novel binuclear structure formed by the bisphosphine ligand. Through the analysis of intermolecular forces, 1 is a three-dimensional stacked structure, which contains unique C-S…π interactions. But 2 forms one-dimensional infinite chain through C-H…π and ππ. The existence of a large number of weak interactions makes the complexes more stable. The emission spectra showed that the peak of complex 1 was at 578 nm, however, complex 2 emitted green light (at 547 nm). The sharp peak at 1.2 THz in THz-TDS spectrum of complex 2 is caused by the interactions of C-H…F.
Keywords: copper (Ⅰ) complexes  fluorescence  intermolecular force  terahertz time-domain spectroscopy
投稿时间:2020-03-30 修订日期:2020-09-08
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孙振洲,孙凌志,朱宁,匡晓楠,杨玉平,李中峰,金琼花,张江威.两个二亚胺及双膦配体混配铜(Ⅰ)配合物的合成、结构与太赫兹光谱[J].无机化学学报,2020,36(12):2261-2270.
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