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Bis(1H-imidazole-?N)bis-(2-oxidopyridinium-3-carboxyl-ato-?O,O)cobalt(II).


ABSTRACT: In the mol-ecule of the title Co(II) complex, [Co(C(6)H(4)NO(3))(2)(C(3)H(4)N(2))(2)], the Co(II) atom is located on a twofold rotation axis and chelated by two oxidopyridiniumcarboxyl-ate anions and further cis-coordinated by two imidazole ligands in a distorted octa-hedral geometry. The shorter C-O bond distance of 1.260?(2)?Å suggests electron delocalization between the oxido group and the pyridinium ring. The uncoordinated carboxyl-ate O atom links with the imidazole and pyridinium rings of adjacent mol-ecules via N-H?O hydrogen bonding. Weak C-H?O hydrogen bonding is also present in the crystal structure.

SUBMITTER: Zhang BY 

PROVIDER: S-EPMC2977295 | biostudies-literature | 2009 Jul

REPOSITORIES: biostudies-literature

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Bis(1H-imidazole-κN)bis-(2-oxidopyridinium-3-carboxyl-ato-κO,O)cobalt(II).

Zhang Bing-Yu BY   Nie Jing-Jing JJ   Xu Duan-Jun DJ  

Acta crystallographica. Section E, Structure reports online 20090725 Pt 8


In the mol-ecule of the title Co(II) complex, [Co(C(6)H(4)NO(3))(2)(C(3)H(4)N(2))(2)], the Co(II) atom is located on a twofold rotation axis and chelated by two oxidopyridiniumcarboxyl-ate anions and further cis-coordinated by two imidazole ligands in a distorted octa-hedral geometry. The shorter C-O bond distance of 1.260 (2) Å suggests electron delocalization between the oxido group and the pyridinium ring. The uncoordinated carboxyl-ate O atom links with the imidazole and pyridinium rings of  ...[more]

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