Han Li-Jun, Yang Shu-Ping, Fu Lin-Lin, Gao Hai-Lei
Acta Crystallogr Sect E Struct Rep Online. 2011 Dec 1;67(Pt 12):m1733. doi: 10.1107/S1600536811046678. Epub 2011 Nov 9.
In the title compound, Co(H(2)O)(6)(2)·2H(2)O, the Co(2+) cation lies on a twofold rotation axis and is coordinated by six water mol-ecules in a distorted octa-hedral geometry. In the 5-acetyl-2-hy-droxy-benzoate anion, the hy-droxy group links with the carboxyl-ate group via an intra-molecular O-H⋯O hydrogen bond and the acetyl group is twisted to the benzene ring at a dihedral angle of 16.99 (12)°. In the crystal structure, the cations, anions and water mol-ecules are linked by extensive O-H⋯O hydrogen bonding.
在标题化合物Co(H₂O)₆₂·2H₂O中，Co²⁺阳离子位于二重旋转轴上，由六个水分子以扭曲的八面体几何构型配位。在5-乙酰基-2-羟基苯甲酸根阴离子中，羟基通过分子内O—H⋯O氢键与羧酸根相连，且乙酰基与苯环的二面角为16.99 (12)°。在晶体结构中，阳离子、阴离子和水分子通过广泛的O—H⋯O氢键相连。
