A copper(II) complex [Cu2(m-MBA)4(2,2′-bipy) 2(H2O)]•H2O with m-methylbenzoic acid (m-MBA), 2,2′-bipyridine (2,2′-bipy) and water molecule has been synthesized by means of hydrothermal way and characterized. Crystal data for this complex: monoclinic, space group C2/c, a=2.591 8(5) nm, b=1.4142(3) nm, c=1.7908(4) nm, β=131.80(3)°, V=4.893 3(17) nm3, D c= 1.379 g•cm-3, Z=4, F(000)=2 104 , Final GooF=1.034, R1=0.065 6, wR2= 0.197 6. The crystal structure shows that two neighboring copper (II) ions are linked together by two bridging-chelati...