A new complex [Cu(phen)_3][(C_6H_5)_2C(OH)COO]_2·6H_2O was prepared by self-assembly of benzilic acid, 1,10-phenanthroline (phen), and copper perchlorate.It crystallizes in triclinic, space group P1-, with a = 1.14661(17), b = 1.6455(2), c = 1.6457(2) nm, α = 74.779(2),β= 74.904(3), γ= 84.424(3)°,V= 2.8914(7) nm~3, D_c = 1.340 g/cm~3, Z = 2, F(000) = 1218, GOOF= 1.018, the final R = 0.0643 and wR= 0.1633.The crystal structure shows that the copper ion is coordinated with six nitrogen atoms from six 1,10-phenanthroline mole...