Synthesis and crystal structure of complex with N-heterocycle and acylhydrazone Cu(C15H11BrN2O4)(C5H5N)

A new copper(II) complex CuL(py)(HL=2,4-Dihydroxyacetophenone-5-bromo-salicylacylhydrazone) was synthesized by the reaction of Cu(CH3COO)(2) center dot H2O with 2,4-dihydroxyacetophenone-5-bromo-salicylacylhydrazone in the ethanol. It was characterized by elemental analysis, IR and X-ray single crystal structure analysis. The crystal belongs to monoclinic, space group P2(1)/c with a=0.5693 7(11) nm, b=3.991 4(7) nm, c=0.881 17(17) nm, beta= 107.149 (3)degrees, V=1.913 5 (6) nm(3), Z=4, D =1.756 Mg.m(-3), F(000) = 1 012, and final R-1 = 0.048 3 wR(2)=0.106 3. The crystal structure indicates that the copper(II) lies in a distorted square-planar environment composed of two oxygen atoms, one nitrogen atom from the tridentate acylhydrazone ligand and one nitrogen atom from the pyridine ligand. The molecules are packed in two-dimensional network structure though intermolecular hydrogen bonds formed adjacent molecules. CCDC: 684932.