Crystal structure and spectroscopic characterization of a coordination polymer of COPPER(II) chloride with ethylenediamine and the 2-HYDROXYBENZOATE ion
S.S. Batool1, S.R. Gilani1, M.N. Tahir2, A. Siddique3, W.T.A. Harrison4
1University of Engineering and Technology, Lahore, Pakistan
2University of Sargodha, Sargodha, Pakistan
3Government Post Graduate Islamia College for Women, Lahore, Pakistan
4University of Aberdeen, Aberdeen, Scotland
Keywords: copper(II) carboxylate, ethylenediamine, salicylate, coordination polymer
Abstract
A new mixed-ligand one-dimensional copper(II) coordination polymer [Cu(en)(sal)Cl] n where en = ethylenediamine(C2H8N2) and Hsal = 2-hydroxybenzoic acid (salicylic acid; C7H6O3) is synthesized and characterized by FTIR spectroscopy and single crystal X-ray diffraction. The structure contains Cu2+ ions in two different distorted octahedral coordination environments: an axially extended CuN4Cl2 moiety arising from a pair of bidentate en ligands and a CuO4Cl2 moiety arising from a pair of asymmetrically coordinated sal- anions. The chloride ions bridge the copper ions into a zigzag chain propagating in [001]. The structure is consolidated by N-H⋯O and N-H⋯Cl hydrogen bonds which generate a layered network. Crystal data: C9H13ClCuN2O3, M r = 296.20, monoclinic, P 21/ c , a = 13.9179(10) Å, b = 10.4900(8) Å, c = 8.5181(6) Å, b = 105.518(4)°, V = 1198.30(15) Å3, Z = 4, R ( F ) = 0.026, wR ( F 2) = 0.068.
|
