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Trans-Tetra-aqua-bis-(isonicotinamide-?N)cobalt(II) bis-(3-hy-droxy-benzoate) tetra-hydrate.


ABSTRACT: The asymmetric unit of the title compound, [Co(C(6)H(6)N(2)O)(2)(H(2)O)(4)](C(7)H(5)O(3))(2)·4H(2)O, contains one-half of the complex cation with the Co(II) ion located on an inversion center, a 3-hy-droxy-benzoate counter-anion and two uncoordinated water mol-ecules. Four water O atoms in the equatorial plane around the Co(II) ion [Co-O = 2.0593?(16) and 2.1118?(16)?Å] form a slightly distorted square-planar arrangement, and the distorted octahedral geometry is completed by the two N atoms [Co-N = 2.1306?(18)?Å] from two isonicotinamide ligands. In the anion, the carboxyl-ate group is twisted from the attached benzene ring at 8.84?(17)°. In the crystal, a three-dimensional hydrogen-bonding network, formed by classical O-H?O and N-H?O hydrogen bonds, consolidates the crystal packing, which exhibits ?-? inter-actions between the benzene and pyridine rings, with centroid-centroid distances of 3.458?(1) and 3.606?(1)?Å, respectively.

SUBMITTER: Zaman IG 

PROVIDER: S-EPMC3297218 | biostudies-literature | 2012 Mar

REPOSITORIES: biostudies-literature

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trans-Tetra-aqua-bis-(isonicotinamide-κN)cobalt(II) bis-(3-hy-droxy-benzoate) tetra-hydrate.

Zaman Iibrahim Göker IG   Caylak Delibaş Nagihan N   Necefoğlu Hacali H   Hökelek Tuncer T  

Acta crystallographica. Section E, Structure reports online 20120204 Pt 3


The asymmetric unit of the title compound, [Co(C(6)H(6)N(2)O)(2)(H(2)O)(4)](C(7)H(5)O(3))(2)·4H(2)O, contains one-half of the complex cation with the Co(II) ion located on an inversion center, a 3-hy-droxy-benzoate counter-anion and two uncoordinated water mol-ecules. Four water O atoms in the equatorial plane around the Co(II) ion [Co-O = 2.0593 (16) and 2.1118 (16) Å] form a slightly distorted square-planar arrangement, and the distorted octahedral geometry is completed by the two N atoms [Co-  ...[more]

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