Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/10485
Title: Tris[N-(4-fluorophenyl)pyridine-2-carboxamidato-k 2N,N′]cobalt(III) tri hydrate : a novel meridional complex
Authors: Qi, JY
Yang, QY
Chan, SS
Zhou, ZY
Chan, ASC
Issue Date: 2004
Source: Acta crystallographica. Section C, Crystal structure communications, 2004, v. 60, no. 5, p. m210-m211 How to cite?
Journal: Acta crystallographica. Section C, Crystal structure communications 
Abstract: The title complex, [Co(C12H8FN2O) 3]·3H2O, has been synthesized for the first time. The complex comprises three bidentate ligands containing the pyridine-2-carboxamide stem. The distorted octahedral coordination around the Co atom is formed via the pyridine (py) N atom and the deprotonated amide N atom of each ligand, with the three pyridine rings in a meridional arrangement. For each ligand, the pyridine ring and the carbonyl group are nearly coplanar, with torsion angles in the range 0.4 (3)-4.8 (4)°. The Co-Npy distances [1.9258(16)-1.9656 (17) Å] are shorter than the corresponding Co-Namide distances [1.9372 (17)-1.9873 (15) Å]. In addition, the Co - Npy distances are closely related to the magnitudes of the chelate angles, a shorter Co-Npy distance corresponding to a larger angle. Five intermolecular hydrogen bonds, involving carbonyl O atoms of the ligands and lattice water molecules, lead to the formation of a mesh structure.
URI: http://hdl.handle.net/10397/10485
ISSN: 0108-2701
DOI: 10.1107/S0108270104005803
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