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A New Coordination Mode of 6-methylnicotinic Acid in trans-tetraaquabis(6-methylpyridine-3-carboxylato-kappaO)cobalt(II) Tetrahydrate

A New Coordination Mode of 6-methylnicotinic Acid in trans-tetraaquabis(6-methylpyridine-3-carboxylato-kappaO)cobalt(II) Tetrahydrate

Boris-Marko Kukovec, Zora Popović, Gordana Pavlović

Acta Crystallogr C. 2007 Dec;63(Pt 12):m615-7.

PMID: 18057610

Abstract:

The title compound, [Co(C7H6NO2)2(H2O)4] x 4 H2O, contains a Co(II) ion lying on a crystallographic inversion centre. The Co(II) ion is octahedrally coordinated by two 6-methylpyridine-3-carboxylate ligands in axial positions [Co-O = 2.0621 (9) A] and by four water molecules in the equatorial plane [Co-O = 2.1169 (9) and 2.1223 (11) A]. There are also four uncoordinated water molecules. The 6-methylpyridine-3-carboxylate ligands are bound to the Co(II) ion in a monodentate manner through a carboxylate O atom. There is one strong intramolecular O-H...O hydrogen bond, and six strong intermolecular hydrogen bonds of type O-H...O and one of type O-H...N in the packing, resulting in a complex three-dimensional supramolecular structure.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP3222477	6-Methylnicotinic acid		3222-47-7	Price

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