Crystal Structure, Fluorescence and Thermal Stability Properties of a Dinuclear Copper(Ⅱ) Complex Cu2(L)2(phen)2·5H2O (H2L =Bicycle2.2.1 hept-2-en-5,6-dicarboxylic acid)

摘要

A new dinuclear copper(Ⅱ) complex[Cu2(L)2(phen)2]·5H2O(1) with bicycle[2.2.1]hept-2-en-5,6-dicarboxylic acid(H2L) and 1,10-phenanthroline(phen) as ligands has been synthesized in the mixed solvents of ethanol and water.It crystallizes in the monoclinic space group P21/c,with α= 17.925(4),b = 19.908(4),c = 11.235(2) A,β = 97.65(3)°,V= 3973.4(14) A3,Dc = 1.552 g/cm3,Z= 8,F(000) = 1910,the final GOOF = 1.056,R= 0.0519 and wR= 0.1293.The crystal structure shows that the whole molecule consists of two independent dinuclear units,in which two copper ions are bridged by two μ2-η1:η0-3-carboxylate groups of L2- anions.The fluorescence and thermal stability properties of 1 were studied.The results show that 1 has an intense fluorescent emission at around 381 nm.The TG analysis shows that 1 is stable below 143 °C.