The structure of (o-phthalato)bis(pyridine)copper(II) with bridging and chelating o-phthalate anions

Abstract

[Cu(C5HsN)2(CaH404)] , M r = 385.9, is monoclinic, space group P21/c, with a = 18.199(6), b = 11.991 ( 1 4 ) , c = 1 7 . 9 2 3 ( 8 ) , ~ , f l = 119.98(2) ° , V = 3388 (4)/~ 3, Z = 8, D x = 1.51, D m = 1 . 5 1 M g m -3, F(000) = 1576, 2(Cu Ks) = 1.54178 ,A, #(Cu Ks) = 1.999 mm -~. R = 0.055 for 5425 observed reflections. 0567-7408/81/122159-05501.00 The structure consists of two crystallographically independent square-pyramidal [Cu(C 5HsN) 2 (C8H404)] complexes linked in polymeric chains by bridging phthalate anions which also act as chelating ligands through two O atoms from one carboxylate group. Pentacoordination of Cu involves two N atoms (one at the apex of the pyramid) from two pyridine molecules, one O atom from the monodentate carboxylate of an © 1981 International Union of Crystallography 2160 THE STRUCTURE OF (o-PHTHALATO)BIS(PYRIDENE)COPPER(I I ) o-phthalate anion and two 0 atoms from the bidentate chelating carboxylate of another o-phthalate anion. In the chains, held together by normal van der Waals contacts, C H . . . 0 interactions involving C atoms of pyridine and 0 atoms from chelating carboxylate