Acta Cryst. (2008). E64, m172  [ doi:10.1107/S1600536807065841 ]

(Croconato-²O,O')bis(1,10-phenanthroline-²N,N')manganese(II)

H.-F. Chen, H.-Y. Chen, X. Chen, A. S. Batsanov and Q. Fang

Abstract: The title complex, [Mn(C₅O₅)(C₁₂H₈N₂)₂], lies across a crystallographic twofold axis which passes through the Mn atom and bisects the croconate ligand. The two 1,10-phenanthroline (phen) ligands are arranged in a propeller manner and the local molecular geometry of the MnN₄O₂ unit is severely distorted octahedral. This may be interpreted as a structural perturbation of the MnN₄ square by the croconate ligand. In the crystal structure, the dipole moments of the molecules are arranged alternately along the +b and -b directions. All the phen ligands are involved in stacking interactions, alternately along the [110] and [10] directions. The alternate spacings between the neighbouring phen planes in the one-dimensional stacks are 3.361 (2) and 3.526 (2) Å.

Online 12 December 2007

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