Kim Nam-Ho, Hwang In-Chul, Ha Kwang
Acta Crystallogr Sect E Struct Rep Online. 2009 May 7;65(Pt 6):m621. doi: 10.1107/S1600536809016316.
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.
标题化合物{(C₆H₁₈N₂)₀.₅[MnBr₂(C₆H₄NO₂)(H₂O)]}ₙ的不对称单元包含络合阴离子的重复单元和位于二重旋转轴上的己烷-1,6-二铵阳离子的一半。在阴离子聚合物中，Mn²⁺离子由吡啶-羧酸盐（pic）阴离子配体桥联，沿c轴形成链状结构。Mn²⁺离子在扭曲的八面体环境中由吡啶环的一个N原子、两个羧酸盐基团的两个O原子、水分子的一个O原子和两个Br原子六配位。该化合物表现出分子间N-H⋯O、N-H⋯Br、O-H⋯Br和O-H⋯O氢键。相邻吡啶环之间也可能存在分子间π-π相互作用，质心间距为3.992(4) Å。
