Acta Cryst. (2007). E63, m2465  [ doi:10.1107/S1600536807042249 ]

Diaquabromido[N,N'-bis(2-pyridylmethylidene)cyclohexane-1,2-diamine]manganese(II) bromide dibromido[N,N'-bis(2-pyridylmethylidene)cyclohexane-1,2-diamine]manganese(II)

I.-C. Hwang and K. Ha

Abstract: The crystal structure of the title compound, [MnBr(C₁₈H₂₀N₄)(H₂O)₂]Br·[MnBr₂(C₁₈H₂₀N₄)], contains two different Mn^II complexes in the asymmetric unit. In the neutral complex, the Mn²⁺ ion is six-coordinated in a distorted octahedral environment by four N atoms from the tetradentate ligand N,N'-bis(2-pyridylmethylidene)cyclohexane-1,2-diamine (bpic) and two Br atoms. In the cationic complex, the Mn²⁺ ion is seven-coordinated in an approximately pentagonal-bipyramidal environment by four N atoms from bpic, one Br atom and two O atoms from water ligands. The compound displays intermolecular O-HBr hydrogen bonding. There are also intermolecular - interactions between adjacent pyridine rings, with centroid-to-centroid distances of 3.604 and 3.680 Å, and with dihedral angles between the ring planes of 4.7 and 5.0°.

Online 1 September 2007

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