title: catena-Poly[hemi(hexane-1,6-diammonium) [[aqua-dibromido-manganese(II)]-μ-pyridine-2-carboxyl-ato]].
abstract: The asymmetric unit of the title compound, {(C(6)H(18)N(2))(0.5)[MnBr(2)(C(6)H(4)NO(2))(H(2)O)]}(n), contains the repeat unit of the complex anion and one-half of a hexane-1,6-diammonium cation that is located on a twofold rotation axis. In the anionic polymer, the Mn(2+) ions are bridged by the pyridine-carboxyl-ate (pic) anion ligand, forming a chain structure along the c axis. The Mn(2+) ion is six-coordinated in a distorted octa-hedral environment by one N atom of the pyridine ring, two O atoms of the two carboxyl-ate groups, one O atom of the water mol-ecule and two Br atoms. The compound displays inter-molecular N-H⋯O, N-H⋯Br, O-H⋯Br and O-H⋯O hydrogen bonding. There may also be inter-molecular π-π inter-actions between adjacent pyridine rings, with a centroid-centroid distance of 3.992 (4) Å.
authors.forename: Nam-Ho
authors.initials: NH
authors.lastname: Kim
authors.forename: In-Chul
authors.initials: IC
authors.lastname: Hwang
authors.forename: Kwang
authors.initials: K
authors.lastname: Ha