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Bis(2,6-dimethyl-pyridinium) tetra-bromido-cobaltate(II).

ABSTRACT: In the crystal structure of the title compound, (C(7)H(10)N)(2)[CoBr(4)], the [CoBr(4)](2-) anion is connected to two cations through N-H?Br and H(2)C-H?Br hydrogen bonds to form two-dimensional cation-anion-cation layers normal to the crystallographic b axis. Inter-actions of the ?-? type are absent between cations in the stacks [centroid-centroid separation = 5.01?(5)?Å]. Significant inter-molecular Br-aryl inter-actions are present in the structure, especially an unusually short Br-ring centroid inter-action of 3.78?(1)?Å. The coordination geometry of the anion is approximately tetrahedral and a twofold rotation axis passes through the Co atom.

SUBMITTER: Ali BF

PROVIDER: S-EPMC2960811 | biostudies-other | 2008 Feb

REPOSITORIES: biostudies-other

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Bis(2,6-dimethyl-pyridinium) tetra-bromido-cobaltate(II).

Ali Basem Fares BF Al-Far Rawhi H RH Haddad Salim F SF

Acta crystallographica. Section E, Structure reports online 20080220 Pt 3

In the crystal structure of the title compound, (C(7)H(10)N)(2)[CoBr(4)], the [CoBr(4)](2-) anion is connected to two cations through N-H⋯Br and H(2)C-H⋯Br hydrogen bonds to form two-dimensional cation-anion-cation layers normal to the crystallographic b axis. Inter-actions of the π-π type are absent between cations in the stacks [centroid-centroid separation = 5.01 (5) Å]. Significant inter-molecular Br-aryl inter-actions are present in the structure, especially an unusually short Br-ring centr ...[more]

PMID: 21201870

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