Diaquabis(biuretato-κ2O,O′)nickel(II) dichloride

Abstract

The title compound, [Ni(C2H5N3O 2)2(H2O)2]Cl2, contains Ni2+ cations octahedrally coordinated by two bidentate biuret molecules in an O,O′-bidentate coordination mode and two water molecules, the latter in a trans configuration. Two chloride anions provide charge compensation. Numerous N-H⋯O (mean H⋯O = 2.17 Å, mean N-H⋯O = 164° and mean N⋯O = 2.991 Å), N-H⋯Cl (mean H⋯Cl = 2.46 Å, mean N-H⋯Cl = 162° and mean N⋯Cl = 3.278 Å) and O-H⋯Cl (mean H⋯Cl = 2.19 Å, mean O-H⋯Cl = 159° and mean O⋯Cl = 3.068 Å) hydrogen bonds help to stabilize the crystal packing. © 2005 International Union of Crystallography Printed in Great Britain - all rights reserved.