Cis-Di­aqua­bis­[2-(Hydroxymethyl)­Pyridine]­Nickel(II) Dichloride

Abstract

The title complex, [Ni(mpy)<inf>2</inf>(H<inf>2</inf>O)<inf>2</inf>]Cl <inf>2</inf> [mpy is 2-(hydroxy-methyl)pyridine, C<inf>6</inf>H<inf>7</inf>NO], consists of two chloride anions and an [Ni(mpy)<inf>2</inf>(H<inf>2</inf>O) <inf>2</inf>]2+ cation, in which the NiII ion lies on a twofold axis and exhibits octahedral geometry, coordinated by two neutral mpy ligands and two water molecules. Mpy acts as an N,O-bidentate ligand, giving rise to a five-membered chelate ring. The Ni-N<inf>mpy,</inf> Ni-O<inf>mpy</inf> and Ni-O<inf>water</inf> bond distances are 2.0629 (8), 2.0573 (7) and 2.0490 (7) Å, respectively. The H atoms of the water molecules and the hydroxy group of mpy form O-H⋯Cl hydrogen bonds, resulting in a three-dimensional network. ©2004 International Union of Crystallography Printed in Great Britain - all rights reserved.