Synthesis and Crystal Structure of Tetraquaorotatonickel(II) Monohydrate

Abstract

The title compound, tetraquaorotatonickel(II) monohydrate, C<inf>5</inf>H<inf>12</inf>N<inf>2</inf>O<inf>9</inf>Ni, crystallizes in the monoclinic space group P1 with the following unit-cell parameters: a = 7.2282(4)Å, b = 8.2959(4)Å, c = 10.0611(5)Å, α = 80.115(4)°, β = 70.479(4)°, γ = 65.779(4)° and Z = 2. The NiII ion is coordinated by a deprotonated N atom and the carboxylate O atom of the orotate ligand and four aqua ligands in a distorted octahedral geometry. Intermolecular N-H·O and O-H·O hydrogen bonds produce R<inf>2</inf>2(8), R<inf>2</inf>2(12), R<inf>2</inf>2(16), R<inf>3</inf>2(8), R<inf>4</inf>3(8) and R<inf>4</inf>4(12) rings, which lead to a one-dimensional polymeric chains. An extensive three-dimensional network of N-H···O and O-H···O hydrogen bonds, π-π and N-H···π interactions are responsible for crystal stabilization. 2008 © The Japan Society for Analytical Chemistry.