Kumagai Hitoshi, Kawata Satoshi, Ogihara Nobuhiro
Toyota Central R&D Labs., Inc., 41-1 Yokomichi, Nagakute, Aichi 480-1192, Japan.
Department of Chemistry Fukuoka University 8-19-1 Nanakuma Jonan-ku Fukuoka 814-0180 Japan.
Acta Crystallogr E Crystallogr Commun. 2025 Feb 7;81(Pt 3):204-207. doi: 10.1107/S2056989025000982. eCollection 2025 Mar 1.
The asymmetric unit of the title compound, {[Co(CHO)(HO)]·2CHNO} or {[Co(Hdondc)(HO)]·2DMF} , comprises half of a Co ion, half of a 1,5-di-hydroxy-naphthalene-2,6-di-carboxyl-ate dianion (Hdondc), two water mol-ecules and a di-methyl-formamide (DMF) mol-ecule. The Co ion, which is located on a crystallographic inversion center, exhibits a distorted six-coord-inated octa-hedral geometry with two oxygen atoms of the Hdondc ligand and four oxygen atoms of the water mol-ecules. The carboxyl-ate group is almost coplanar with the naphthalene moiety and shows monodentate coordination to the Co ion. The Co ions are bridged by the Hdondc ligand to form a one-dimensional chain. The hy-droxy groups of the ligand have intra-chain hydrogen bonding inter-actions with coordinated water mol-ecules. The coordinated water mol-ecules exhibit not only intra-chain hydrogen bonding inter-actions, but also inter-chain hydrogen-bonding inter-actions. The chains are connected by inter-chain hydrogen-bonding inter-actions and are arranged in parallel to form a two-dimensional network. The chains are further connected by inter-chain hydrogen-bonding inter-actions the DMF mol-ecules and C-H⋯π inter-actions to give a three-dimensional network.
标题化合物{[Co(CHO)(HO)]·2CHNO}或{[Co(Hdondc)(HO)]·2DMF}的不对称单元包含半个钴离子、半个1,5-二羟基萘-2,6-二羧酸二阴离子（Hdondc）、两个水分子和一个二甲基甲酰胺（DMF）分子。位于晶体学反演中心的钴离子呈现出扭曲的六配位八面体几何构型，与Hdondc配体的两个氧原子和水分子的四个氧原子配位。羧酸根基团几乎与萘部分共面，并与钴离子形成单齿配位。钴离子通过Hdondc配体桥连形成一维链。配体的羟基与配位水分子存在链内氢键相互作用。配位水分子不仅存在链内氢键相互作用，还存在链间氢键相互作用。这些链通过链间氢键相互作用连接并平行排列形成二维网络。这些链进一步通过链间氢键相互作用、DMF分子和C-H⋯π相互作用形成三维网络。
