Acta Cryst. (2009). E65, m42-m43  [ doi:10.1107/S1600536808040634 ]

Di--sulfato-bis[diaqua(1H-imidazo[4,5-f][1,10]phenanthroline)nickel(II)] dihydrate

W. Zeng, J.-H. She, C.-J. Wang and Y. Fang

Abstract: In the title compound, [Ni₂(SO₄)₂(C₁₃H₈N₄)₂(H₂O)₄]·2H₂O, the complete dimeric complex is generated by an inversion center. The Ni^II atoms are octahedrally coordinated by two N atoms from one 1H-imidazo[4,5-f][1,10]phenanthroline (IP) ligand and two O atoms from two adjacent sulfate ions forming the equatorial plane, with two coordinated water molecules in the axial sites. Both of the sulfate ions act as bidentate-bridging ligands connecting the two Ni^II ions, thus generating a binuclear complex. In the crystal structure, O-HO and O-HN hydrogen bonds involving the coordinated and uncoordinated water molecules and N-HO links lead to the formation of a two-dimensional sheet structure developing parallel to (010). Weak - stacking interactions [centroid-centroid separation = 3.613 (2) Å] between the IP ligands also occur.

Online 10 December 2008

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