Abstract
There are three different MnII 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 (, y, 0) and (0, y, ), respectively. The compound displays intermolecular O—H⋯Br hydrogen bonding. There are intermolecular π–π interactions between adjacent pyridine rings, with centroid–centroid distances of 3.822 and 3.833 Å, and a C—H⋯O interaction is also present.
Highlights
There are three different MnII complexes in the asymmetric unit of the title compound, [Mn(C15H16N4)(H2O)2]Br2Á2{[MnBr(C15H16N4)(H2O)]Br}Á[MnBr2(C15H16N4)]
The Mn2+ ion is six-coordinated in a distorted octahedral environment by four N atoms of the tetradentate ligand N,N0-bis(2-pyridylmethylene)propane-1,3-diamine and two bromide ligands
In the two cationic complexes, the Mn2+ ions are 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
Summary
The Mn2+ ion is six-coordinated in a distorted octahedral environment by four N atoms of the tetradentate ligand N,N0-bis(2-pyridylmethylene)propane-1,3-diamine (bppd) and two bromide ligands. In the two cationic complexes, the Mn2+ ions are 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 (12, y, 0) and (0, y, 12), respectively. The compound displays intermolecular O—HÁ Á ÁBr hydrogen bonding. There are intermolecular – interactions between adjacent pyridine rings, with centroid–centroid distances of 3.822 and 3.833 A , and a C—HÁ Á ÁO interaction is present
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More From: Acta Crystallographica Section E Structure Reports Online
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