Acta Cryst. (2007). E63, m1798  [ doi:10.1107/S1600536807026001 ]

Diaqua(1,10-phenanthroline-5,6-dione-²N,N)(pyridine-2,6-dicarboxylato-³O,N,O')manganese(II) dihydrate

H.-G. Ge, Q. Xu, X.-H. Guo, W.-J. Sun and C.-B. Zhao

Abstract: The title compound, [Mn(C₇H₃NO₄)(C₁₂H₆N₂O₂)(H₂O)₂]·2H₂O, is a neutral mononuclear Mn^II complex. The Mn-N bond to the pyridine-2,6-dicarboxylate ligand lies along a crystallographic twofold rotation axis. The Mn²⁺ cation has a distorted pentagonal-bipyramidal configuration, coordinated by three N atoms, one from the pyridine-2,6-dicarboxylate ligand and two from the chelating 1,10-phenanthroline-5,6-dione ligand. The remaining four coordination sites are occupied by O atoms, two from the pyridine-2,6-dicarboxylate ligand and two from water molecules. The asymmetric unit also contains a solvent water molecule. The crystal structure is stabilized by a network of O-HO hydrogen-bonding interactions in a three-dimensional supramolecular structure.

Online 6 June 2007

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