Synthesis, crystal structure, and luminescence of a heterotrinuclear CuCd complex containing macrocyclic oxamide and thiocyanate ligands.

The complex incorporating macrocyclic oxamide of the formula [(CuL)Cd(NCS)] (HL = 2,3-dioxo-5,6,14,15-dibenzo-1,4,8,12-tetraazacyclo-pentadeca-7,13-diene) has been synthesized and structurally characterized. The crystals crystallize in the monoclinic system, space group C2/ c, a = 13.865(3), b = 14.390(3), c = 38.252(8) Å, β = 92.45(3)°, Z = 8. The crystal structure unit is a trianuclear complex in which the Cd and Cu ions are bridged by the macrocyclic oxamide groups. The [(CuL)Cd(NCS)] units are alternately bridged by C-H···O to C-H···S hydrogen bond to form a 2D framework. The luminescent property of the compound is also discussed. [ABSTRACT FROM AUTHOR]