Synthesis and Crystal Structure of Copper Binuclear Complex with Schiff Base of 1,2-Diaminopropane

The title complex Cu2MES·2H2O [H4MES = N,N′-bis(3-carboxylsalicylidene)-1,2- diaminopropane] is synthesized in methanol at room temperature. The structure is characterized by elemental analysis, IR and single crystal X-ray diffraction. It crystallizes in triclinic system, space group P-1, with a=0.780 13(10) nm, b= 1.104 12(14) nm,c= 1.159 74(15) nm,α= 80.067(2)°, β = 74.129(2)°, γ = 80.627(2)°,Molecular formula C19H18Cu2N2O8,V= 0.939 4(2) nm3,Z=2,Dc=1.872 Mg/m3,F(000) = 536,R1= 0.049 5,wR2= 0.126 9,S=1.050. The crystal is constructed with binuclear units, in which the two copper atoms are bridged by two phenolic oxygen atoms. Copper atom 1 is coordinated by two nitrogen atoms, two phenolic oxygen atoms in a planar geometry; copper atom 2 is coordinated by two phenolic oxygen atoms and two carboxyl oxygen atoms in the same plane.