Crystal structure of catena-poly[[di­aqua­bis­(4-formyl­benzoato-κO1)cobalt(II)]-μ-pyrazine-κ2N:N′]

Acta Crystallographica Section E: Crystallographic Communications

n, G. ޹  kı²  .²  Aş³  dz 

[1] Aksaray University, Department of Physics, 68100, Aksaray, Turkey;Department of Chemistry, Kafkas University, 36100 Kars, Turkey;Department of Physics, Hacettepe University, 06800 Beytepe, Ankara, Turkey

关键词: CRYSTAL STRUCTURE;    COBALT(II);    TRANSITION METAL COMPLEXES;    BENZOIC ACID DERIVATIVES;    ONE-DIMENSIONAL COORDINATION POLYMER;   

DOI  :  10.1107/S205698901500403X

学科分类：数学（综合）

来源: International Union of Crystallography

【 摘 要 】

In the title polymeric compound, [Co(C8H5O3)2(C4H4N2)(H2O)2]n, the CoII atom is located on a twofold rotation axis and has a slightly distorted octa­hedral coordination sphere. In the equatorial plane, it is coordinated by two carboxyl­ate O atoms of two symmetry-related monodentate formyl­benzoate anions and by two N atoms of two bridging pyrazine ligands. The latter are bis­ected by the twofold rotation axis. The axial positions are occupied by two O atoms of the coordinating water mol­ecules. In the formyl­benzoate anion, the carboxyl­ate group is twisted away from the attached benzene ring by 7.50 (8)°, while the benzene and pyrazine rings are oriented at a dihedral angle of 64.90 (4)°. The pyrazine ligands bridge the CoII cations, forming linear chains running along the b-axis direction. Strong intra­molecular O—H⋯O hydrogen bonds link the water mol­ecules to the carboxyl­ate O atoms. In the crystal, weak O—Hwater⋯Owater hydrogen bonds link adjacent chains into layers parallel to the bc plane. The layers are linked via C—Hpyrazine⋯Oform­yl hydrogen bonds, forming a three-dimensional network. There are also weak C—H⋯π inter­actions present.

【 授权许可】

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