Syntheses,Crystal Structures and Fluorescence Properties of Two Mononuclear Copper(Ⅱ) Compounds

【作者】 陈彦国； 王启英； 唐强； 洪鹏； 胡传群；

【Author】 CHEN Yan-Guo;WANG Qi-Ying;TANG Qiang;HONG Peng;HU Chuan-Qun;College of Material and Chemical Engineering,Hubei University of Technology;

【机构】 College of Material and Chemical Engineering,Hubei University of Technology；

【摘要】 Two new compounds,1([Cu（IDB_）2]Cl₂·2CH₃CH₂OH·2H₂O（IDB = N,N-di（2-benzimidazolylmethyl）imine]） and 2([Cu（EDTB）]·2[C₆H₄（OH）COO]·6H₂O（EDTB = N,N,N’,N’-tetrakis-[（2-benzimidazolyl）methyl]-1,2-ethanediamine]）,have been synthesized and their crystal structures were determined by single-crystal X-ray diffraction. Crystal 1 belongs to the triclinic system,space group P1 with a = 9.565（2）,b = 9.863（2）,c = 10.252（3） ?,α = 81.915,β = 88.330,γ = 87.347°,V = 956.28（40） ?3,Z = 1,F（000） = 427,D_c = 1.419 g/cm3,Mr = 817.27 and μ（MoKα） = 0.764 mm^-1. The final R indices（I > 2σ（I））: R = 0.0505,wR = 0.1417; R indices（all data）: R = 0.0591,wR = 0.1525. Crystal 2 is of triclinic system,space group P1 with a = 11.487（3）,b = 13.396（4）,c = 17.977（5） ?,α = 73.899（5）,β = 86.629（5）,γ = 65.018（4）°,V = 2403.8（12） ?3,Z = 2,F（000） = 1072,D3c = 1.417 g/cm,Mr = 1025.54,μ（MoKα） = 0.528 mm^-1. The final R indices（I > 2σ（I））: R = 0.0769,w R = 0.163 2; R indices（all data）: R = 0.0769,wR = 0.1632. The two compounds exhibit mononuclear structures. The copper（Ⅱ） atom of crystal 1 is six-coordinated by four nitrogen atoms of benzimidazole groups and two amine nitrogen atoms from the ligand IDB to adopt a distorted octahedral coordination geometry. The copper（Ⅱ） atom of crystal 2 is six-coordinated by four nitrogen atoms of benzimidazole groups and two amine nitrogen atoms from the ligand EDTB to show a distorted octahedral coordination geometry. Particularly,the two compounds exhibit fluorescent properties at room temperature in ethanol.更多还原