Crystal structure of tetra­aqua­bis(3,5-di­amino-4H-1,2,4-triazol-1-ium)cobalt(II) bis­[bis­(pyridine-2,6-di­carboxyl­ato)cobaltate(II)] dihydrate

Acta Crystallographica Section E: Crystallographic Communications

Hussain, Z.¹  Fun, H.-K.²  Mbonu, J.³  Johnson, A.⁴  Loh, W.-S.⁴ 

[1]Department of Chemistry, Federal University of Petroleum Recourses Effurun, Delta State, Nigeria

[2]Department of Chemistry, Karakoram International University, Gilgit, Baltistan, Pakistan

[3]Department of Chemistry, University of Uyo, P.M.B. 1017, Uyo, Akwa Ibom State, Nigeria

[4]H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75720, Pakistan

关键词: CRYSTAL STRUCTURE;    PYRIDINE-2,6-DICARBOXYLATE;    TRIAZOLIUM;    COII COMPLEX;    HYDROGEN BONDING;   

DOI  :  10.1107/S2056989015010014

学科分类：数学（综合）

来源: International Union of Crystallography

【 摘 要 】

The asymmetric unit of the title compound, [Co(C2H6N5)2(H2O)4][Co(C7H3NO4)2]2·2H2O, features 1.5 CoII ions (one anionic complex and one half cationic complex) and one water mol­ecule. In the cationic complex, the CoII atom is located on an inversion centre and is coordinated by two triazolium cations and four water mol­ecules, adopting an octa­hedral geometry where the N atoms of the two triazolium cations occupy the axial positions and the O atoms of the four water mol­ecules the equatorial positions. The two triazole ligands are parallel offset (with a distance of 1.38 Å between their planes). In the anionic complex, the CoII ion is six-coordinated by two N and four O atoms of the two pyridine-2,6-di­carboxyl­ate anions, exhibiting a slightly distorted octa­hedral coordination geometry in which the mean plane of the two pyridine-2,6-di­carboxyl­ate anions are almost perpendicular to each other, making a dihedral angle of 85.87 (2)°. In the crystal, mol­ecules are linked into a three-dimensional network via C—H⋯O, C—H⋯N, O—H⋯O and N—H⋯O hydrogen bonds.

【 授权许可】

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