Synthesis, structure, and properties of the complex [Cu(L)Cl] ∙ 2H2O

The crystal structure of copper(II) complex with the HL ligand obtained from 3-[4-carboxyphenylazo] penta-2,4-dione and ethylenediamine (En) was determined by X-ray diffraction. The crystals are orthorhombic: a = 7.329(3), b = 15.393(5), c = 18.474(7) Å, V = 2084.1(12) Å 3 , space group P 2 1 2 1 2 1 , Z = 4, ρ (calcd.) = 1.486 g/cm 3 , R = 0.0441. The copper atom is coordinated by four nitrogen atoms of two En ligands and by the chlorine atom in an axial position according to the extended square pyramid geometry (4 + 1) (CIF file CCDC no. 1436882).