Abstract: | A new oxamidato-bridged trinuclear complex [(CuL)2Mn](ClO4)2 (H2L = 2,3-dioxo-5,6,14,15-dibenzo-1,4, 8,12-tetraazacyclo-pentadeca-7,3-dien)] was prepared and its structure determined. The complex is monoclinic, space group P21/n, with a = 10.625(3), b = 11.602(3), c = 16.020(5)?Å, β = 91.031(5)°, Z = 2; it was refined to R1 = 0.0555. In the solid state, the structure consists of centrosymmetric [(CuL)2Mn]2+ cations separated by perchlorate anions; the central manganese atom is four coordinated with square planar geometry. |