Acta Cryst. (2003). E59, m297-m299  [ doi:10.1107/S1600536803009024 ]

Tris(phenanthroline-²N,N')cobalt(II) fumarate fumaric acid tetrahydrate

Y. Liu, D.-J. Xu and C.-H. Hung

Abstract: The title compound, [Co(C₁₂H₈N₂)₃](C₄H₂O₄)_0.5(C₄H₃O₄)·1.5C₄H₄O₄·4H₂O, consists of the cobalt(II) complex cation with phenanthroline (phen), half a fumarate dianion, a fumarate monoanion, one and a half fumaric acid molecule and uncoordinated water molecules. The separations of 3.342  (8) and 3.493  (15)  Å between the phen rings related by inversion centers indicate the existence of --stacking interactions between the neighboring complex ions. These complex molecules assemble as hydrophobic layers via - stacking. Fumarate, fumaric acid and water are linked to each other to form hydrophilic layers by hydrogen bonding in the crystal structure.

Online 30 April 2003

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