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Acta Cryst. (2009). E65, m64-m65 [ doi:10.1107/S1600536808041731 ]

Diaqua[N,N'-bis(2-pyridylmethylene)propane-1,3-diamine]manganese(II) dibromide-aquabromido[N,N'-bis(2-pyridylmethylene)propane-1,3-diamine]manganese(II) bromide-dibromido[N,N'-bis(2-pyridylmethylene)propane-1,3-diamine]manganese(II) (1/2/1)

I.-C. Hwang and K. Ha

Abstract: There are three different Mn^II complexes in the asymmetric unit of the title compound, [Mn(C₁₅H₁₆N₄)(H₂O)₂]Br₂·2{[MnBr(C₁₅H₁₆N₄)(H₂O)]Br}·[MnBr₂(C₁₅H₁₆N₄)]. In the neutral complex, the Mn²⁺ ion is six-coordinated in a distorted octahedral environment by four N atoms of the tetradentate ligand N,N'-bis(2-pyridylmethylene)propane-1,3-diamine (bppd) and two bromide ligands. In the two cationic complexes, the Mn²⁺ ions are also six-coordinated in similar environments, but one Mn ion is coordinated by four N atoms of bppd, one Br atom and one O atom of a coordinating water molecule, whereas the other Mn ion is coordinated by four N atoms of bppd and two O atoms of water ligands. The complexes with two coordinated Br atoms or two H₂O ligands are disposed about a twofold axis through Mn and C atoms with the special positions ( ${\\script{1\\over 2}}$ , y, 0) and (0, y, ${\\script{1\\over 2}}$ ), respectively. The compound displays intermolecular O-HBr hydrogen bonding. There are intermolecular [pi] - [pi] interactions between adjacent pyridine rings, with centroid-centroid distances of 3.822 and 3.833 Å, and a C-HO interaction is also present.

Online 13 December 2008