Rinta Heikki, Peuronen Anssi, Lahtinen Manu
University of Jyväskylä, Department of Chemistry, PO Box 35, FI-40014 JY, Finland.
Acta Crystallogr Sect E Struct Rep Online. 2012 Dec 1;68(Pt 12):m1453-4. doi: 10.1107/S1600536812044765. Epub 2012 Nov 3.
The asymmetric unit of the title three-dimensional coordination polymer, [Mn2Br6(C11H28N2O2)] n , consists of one Mn(II) cation, half of a dicationic N,N'-bis-(2-hy-droxy-eth-yl)-N,N,N',N'-tetra-methyl-propane-1,3-diaminium ligand (L) (the other half being generated by a twofold rotation axis), and three bromide ions. The Mn(II) cation is coordinated by a single L ligand via the hy-droxy O atom and by five bromide ions, resulting in a distorted octa-hedral MnBr5O coordination geometry. Four of the bromide ions are bridging to two adjacent Mn(II) atoms, thereby forming polymeric chains along the a and b axes. The L units act as links between neighbouring Mn-(μ-Br)2-Mn chains, also forming a polymeric continuum along the c axis, which completes the formation of a three-dimensional network. Classical O-H⋯Br hydrogen bonds are present. The distance between adjacent Mn(II) atoms is 4.022 (1) Å.
标题三维配位聚合物[Mn₂Br₆(C₁₁H₂₈N₂O₂)]ₙ的不对称单元由一个Mn(II)阳离子、半个双阳离子N,N'-双-(2-羟乙基)-N,N,N',N'-四甲基丙烷-1,3-二铵配体(L)(另一半由二重旋转轴生成)和三个溴离子组成。Mn(II)阳离子通过羟基O原子与一个L配体配位，并与五个溴离子配位，形成扭曲的八面体MnBr₅O配位几何结构。其中四个溴离子桥连到两个相邻的Mn(II)原子上，从而沿a轴和b轴形成聚合物链。L单元作为相邻Mn-(μ-Br)₂-Mn链之间的连接，也沿c轴形成聚合物连续体，从而完成三维网络的形成。存在经典的O-H⋯Br氢键。相邻Mn(II)原子之间的距离为4.022 (1) Å。
