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

ABSTRACT: In the crystal structure of the title Ni(II) complex, [Ni(C(6)H(4)NO(3))(2)(C(3)H(4)N(2))(2)], the Ni(II) atom is located on a twofold rotation axis and is chelated by two oxidopyridiniumcarboxyl-ate anions and further cis-coordinated by two imidazole ligands in a distorted cis-N(2)O(4) octa-hedral geometry. The C-O bond distance of 1.2573?(19)?Å found for the non-coordinating O atom of the carboxyl-ate group indicates significant delocalization of ?-electron density over this residue. Similarly, the C-O bond distance of 1.260?(2)?Å in the heteroaromatic ring indicates delocalization between the deprotonated hydr-oxy 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 and C-H?O hydrogen bonding, leading to a two-dimensional array parallel to (100).

SUBMITTER: Zhang BY

PROVIDER: S-EPMC2977237 | biostudies-literature | 2009 Jul

REPOSITORIES: biostudies-literature

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

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

Acta crystallographica. Section E, Structure reports online 20090722 Pt 8

In the crystal structure of the title Ni(II) complex, [Ni(C(6)H(4)NO(3))(2)(C(3)H(4)N(2))(2)], the Ni(II) atom is located on a twofold rotation axis and is chelated by two oxidopyridiniumcarboxyl-ate anions and further cis-coordinated by two imidazole ligands in a distorted cis-N(2)O(4) octa-hedral geometry. The C-O bond distance of 1.2573 (19) Å found for the non-coordinating O atom of the carboxyl-ate group indicates significant delocalization of π-electron density over this residue. Similarly ...[more]

PMID: 21583420

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