Synthesis, structures and magnetic properties of oxamido-bridged trinuclear Cu(II)–Mn(II)–Cu(II) complexes

Based on self-assembly of CuL(CH3OH) [H2L=(E)-N1-(2-((2-aminocyclohexy-diimino)(phenyl)methyl)-4-chlorophenyl)-N2-(2-benzyl-4-chlorophenyl)oxalamide] with Mn(II), two trinuclear complexes were prepared. They are of the formula [(LCuN3)2Mn(CH3OH)2]·2CH3OH·2H2O (1) and [(LCuSCN)2Mn(H2O)2]·4CH3OH (2). Their magnetic properties were studied by susceptibility versus temperature measurement, the best fitting of the experimental data led to J=−14.40cm−1 for 1 and J=−15.48cm−1 for 2.