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

陈彦国王启英唐强洪鹏胡传群

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.

基金资助：

supported by Research Fund for the Doctor Program of Hubei University of Technology（No.BSQD12139）； Ministry of Science and Technology Small and Medium-sized Enterprise Venture Funds（No.12C26214204453）； Natural Foundation of Hubei Province（No.2010CDA020）； the Key Foundation of Industry-University-Research Cooperation of Education Department,Hubei Province（No.CXY2009A010）；