Bis­(Triethano­lamine-κN,O,O′)­Nickel(II) Squarate

Abstract

The crystal structure determination of the title compound, [Ni(C <inf>6</inf>H<inf>15</inf>NO<inf>3</inf>)<inf>2</inf>](C<inf>4</inf>O <inf>4</inf>), is reported; the squarate dianion is located on an inversion centre and a supramolecular architecture is formed. All the O atoms of the squarate dianion are involved in hydrogen bonding and connect two centrosymmetric nickel triethanolamine complex cations through two symmetry-related hydrogen bonds. There is also a hydrogen-bond interaction between the free hydroxyl O atom of the complex cation and one of the O atoms of the squarate dianion. All these hydrogen bonds link the molecular units in chains. The inter-chain packing is formed by van der Waals forces. © 2004 International Union of Crystallography Printed in Great Britain - all rights reserved.