Acta Cryst. (2009). E65, m194-m195  [ doi:10.1107/S1600536809000981 ]

Aqua(2,9-dimethyl-1,10-phenanthroline-²N,N')bis(2-hydroxybenzoato-O)manganese(II) 2,9-dimethyl-1,10-phenanthroline hemisolvate

P.-Z. Zhao, F.-M. Yan and J.-G. Wang

Abstract: In the asymmetric unit of the title complex, [Mn(C₇H₅O₃)₂(C₁₄H₁₂N₂)(H₂O)]·0.5C₁₄H₁₂N₂, the Mn^II ion is coordinated by a bidentate 2,9-dimethyl-1,10-phenanthroline (dmphen) molecule, one water molecule and two monodentate 2-hydroxybenzoate anions in a distorted trigonal-bipyramidal geometry. The OH group of the 2-hydroxybenzoate anion is disordered over two positions with site-occupancy factors of 0.5. The asymmetric unit is completed with by an uncoordinated half-molecule of dmphen, disordered about a crystallographic twofold axis. In the crystal structure, molecules are linked into a two-dimensional framework by O-HN, O-HO and C-HO hydrogen bonds. The packing of the structure is further stabilized by - stacking interactions involving dmphen molecules, with centroid-centroid separations of 3.8027 (3) and 3.6319 (3) Å.

Online 14 January 2009

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