Bian Guo Qing, Kuroda-Sowa Takayoshi, Sugimoto Sayuri, Maekawa Masahiko, Munakata Megumu
Department of Chemistry, Faculty of Science and Engineering, Kinki University, Higashi-Osaka, Osaka 577-8502, Japan.
Acta Crystallogr C. 2005 Mar;61(Pt 3):m144-6. doi: 10.1107/S0108270105002684. Epub 2005 Feb 28.
The title one-dimensional chain polymer complex, [Mn(C6H4NO3)Cl(C6H5N)2]n, was isolated from the reaction of MnCl2 with 6-oxo-1,6-dihydropyridine-2-carboxylic acid (HpicOH) in pyridine. The asymmetric unit contains one [Mn(HPicO)Cl(py)2] moiety (py is pyridine), with the (HpicO)- ligand acting in a tridentate manner via the two carboxylate O atoms and the pyridone O atom. The operation of inversion centres generates eight- and 14-membered rings and, in conjunction with an a-axis translation, leads to an infinite chain extending along [100]. The Mn...Mn separations in this chain are 5.1069 (6) and 7.1869 (6) A. The MnII atom has a distorted octahedral coordination, with trans-axial pyridine ligands and with three O atoms and the Cl atom in the equatorial plane. The conformation of the 14-membered ring is stabilized by pairs of inversion-related N-H...O hydrogen bonds.
一维链状聚合物配合物[Mn(C6H4NO3)Cl(C6H5N)2]n是通过MnCl2与6-氧代-1,6-二氢吡啶-2-羧酸（HpicOH）在吡啶中的反应分离得到的。不对称单元包含一个[Mn(HPicO)Cl(py)2]部分（py为吡啶），(HpicO)-配体通过两个羧酸根O原子和吡啶酮O原子以三齿方式配位。对称中心的操作产生了八元环和十四元环，并与a轴平移相结合，形成了沿[100]方向延伸的无限链。该链中Mn...Mn的间距为5.1069(6)和7.1869(6) Å。MnII原子具有扭曲的八面体配位，轴向吡啶配体呈反式排列，赤道平面上有三个O原子和Cl原子。十四元环的构象通过成对的与对称相关的N-H...O氢键得以稳定。
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