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Aqua­{2-(pyridin-2-yl)-N-[(pyridin-2-yl)methyl­idene]ethanamine-[kappa]3N,N',N''}(sulfato-[kappa]2O,O')copper(II) tetra­hydrate

The title complex, [Cu(SO4)(C13H13N3)(H2O)]·4H2O, was obtained by mixing copper sulfate penta­hydrate and 2-(pyridin-2-yl)-N-(pyridin-2-yl­methyl­idene)ethanamine in eth­anol under reflux conditions. The CuII ion shows a Jahn-Teller-distorted octa­hedral geometry, with equatorial positions occupied by three N atoms from the tridentate ligand (average Cu-N = 2.004 Å) and one O atom from a bidentate sulfate anion [Cu-O = 1.963 (2) Å]. The axial positions are occupied by one O atom from a coordinating water mol­ecule [Cu-O = 2.230 (3) Å] and one weakly bonded O atom [Cu-O = 2.750 (2) Å] from the bidentate sulfate ion. The complex mol­ecules are connected through O-H...O hydrogen bonds between the coordinating water mol­ecules and sulfate ions from neighboring complexes, forming a double chain parallel to the c axis. The chains are stabilized through additional hydrogen bonds by one of the non-coordinating water mol­ecules bridging between neighboring strands of the double chains. The remaining three water mol­ecules fill the inter­stitial space between the double chains and are involved in an intricate hydrogen-bonding network that consolidates the structure.

Auteur(s) : D. Tinguiano, M. M. Sow, F. B. Tamboura, A. H. Barry and M. Gaye
Pages : M24-M25
Année de publication : 2013
Revue : Acta Crystallographica E
N° de volume : E69
Type : Article
Mise en ligne par : GAYE Mohamed Lamine