Aqua(oxydiacetato-kappa 3O,O ',O '')(pyridine-3-carboxamide-kappa N-1)copper(II) sesquihydrate

作者：Perec Mireille; Baggio Ricardo^*

来源：Acta Crystallographica Section C-Crystal Structure Communications, 2010, 66: M339-M342.

DOI：10.1107/S0108270110040989

In the monomeric title compound, [Cu(C4H4O5)(C6H6N2O)(H2O)]center dot 1.5H(2)O, the Cu-II cation is bound in a square-pyramidal coordination to a tridentate oxydiacetate (ODA) ligand, a monodentate pyridine-3-carboxamide (p3ca) ligand and one aqua ligand, where the two organic ligands form the basal plane and the water O atom occupies the unique apical site. The ODA ligand presents a slight out-of-plane puckering in its central ether O atom, while the p3ca ligand is essentially planar. The availability of efficient donors and acceptors for hydrogen bonding results in the formation of strongly linked hydrogen-bonded bilayers parallel to (101), with an interplanar distance of 3.18 (1) angstrom and a stacking separation between the bilayers of 3.10 (1) angstrom, both of them governed by extended pi-pi interactions. The disordered nature of the solvent water molecules around inversion centres is discussed. The monoaqua compound is compared with the octahedral diaqua analogue, [Cu(C4H4O5)(C6H6N2O)(H2O)(2)], reported recently [Perec & Baggio (2009). Acta Cryst. C65, m296-m298].

• 出版日期2010-11