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)

作者：Hwang In Chul; Ha Kwang^*

来源：Acta Crystallographica Section E-Structure Reports Online, 2009, 65: M64-U714.

DOI：10.1107/S1600536808041731

There are three different Mn(II) complexes in the asymmetric unit of the title compound, [Mn(C(15)H(16)N(4))(H(2)O)(2)]Br(2)center dot-2{[MnBr(C(15)H(16)N(4))(H(2)O)]Br}center dot[MnBr(2)(C(15)H(16)N(4))]. In the neutral complex, the Mn(2+) 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 Mn(2+) 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 ((1)/(2), y, 0) and (0, y, (1)/(2)), respectively. The compound displays intermolecular O-H center dot center dot center dot Br hydrogen bonding. There are intermolecular pi-pi interactions between adjacent pyridine rings, with centroid-centroid distances of 3.822 and 3.833 angstrom, and a C-H center dot center dot center dot O interaction is also present.

• 出版日期2009-1