Synthesis and Crystal Structure of [CuL_2Cl_2]·4H_2O (L=3-Ethyl-4-( p-methoxyphenyl)-5-(2-pyridyl)-1,2,4-triazole)

A new copper(Ⅱ) complex, [CuL2Cl2]·4H2O, [L=3-ethyl-4-( p-methoxyphenyl)-5-(2-pyridyl)-1,2,4-triazole], was synthesized and characterized by X-ray crystallography and infrared spectroscopy. The complex crystallizes in triclinic system with space group P1, a=0.843 9(7) nm, b=0.965 5(8) nm, c=1.093 6(8) nm, α=84.026(19)°, β= 82.33(2)°, γ=89.167(19)°, V=0.878 3(12) nm3, Z=1 with final R=0.033 8. The copper atom lies in a distorted octah-edral environment with two bidentate chelating ligands (L) in the equatorial plane and two Cl-ions in the axial positions. The ligand L coordinates via one triazole nitrogen and one pyridine nitrogen atom. The molecules are stabilized by intermolecular hydrogen bonds in the crystal lattice. CCDC: 705817.