Acta Cryst. (2008). E64, m1490-m1491  [ doi:10.1107/S1600536808035101 ]

Aqua[2,6-bis(2-pyridylamino)pyridine]sulfatonickel(II) monohydrate

L. Lu, J. Wang, B. Xie and L.-K. Zou

Abstract: The Ni atom in the title complex, [Ni(SO₄)(C₁₅H₁₃N₅)(H₂O)]·H₂O, has a distorted trigonal-bipyramidal coordination formed by the tridentate 2,6-bis(2-pyridylamino)pyridine (tpdaH₂) ligand, one sulfate and one coordinated water molecule. The tpdaH₂ ligand is three-coordinated, with the N atom of the central pyridine ring in the equatorial position [Ni-N = 1.9961 (14) Å] and the N atoms of the peripheral pyridine rings in the axial positions [Ni-N = 1.9668 (15) and 1.9895 (15) Å]. The remaining equatorial positions are occupied by the O atoms of the sulfate ligand and the water molecule. The H atoms of both NH groups of the tpdaH₂ ligand are involved in hydrogen bonds with the O atoms of the uncoordinated water molecule and the sulfate group which link the complex molecules, forming an infinite three-dimensional network.

Online 8 November 2008

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