Acta Cryst. (2007). E63, m3009  [ doi:10.1107/S1600536807057509 ]

Diaqua(2,9-dimethyl-1,10-phenanthroline-²N,N')(3-hydroxybenzoato-²O,O')cobalt(II) nitrate

X. Xuan and P. Zhao

Abstract: In the symmetric unit of the title compound, [Co(C₇H₅O₃)(C₁₄H₁₂N₂)(H₂O)₂]NO₃, the Co²⁺ cation is coordinated by a bidentate 2,9-dimethyl-1,10-phenanthroline (dmphen) ligand, a bidentate 3-hydroxybenzoate anion and two water molecules in a distorted octahedral environment. The 3-hydroxybenzoate ligand, Co atom and nitrate anion are situated on a crystallographic twofold rotation axis. The OH group of the benzoate anion is disordered over two symmetry-related positions with site-occupancy factors of 0.5. An extensive series of O-HO hydrogen bonds, involving water molecules and 3-hydroxybenzoate and nitrate anions, and weak C-HO hydrogen bonds lead to a supramolecular network structure.

Online 14 November 2007

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