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Polymorphism in an Aqua‐Bridged, Dinuclear 2‐Nitrobenzoate Complex of Cobalt(II)
Author(s) -
Karmakar Anirban,
Sarma Rupam J.,
Baruah Jubaraj B.
Publication year - 2007
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200600915
Subject(s) - chemistry , cobalt , tetrahydrate , crystallization , crystal structure , medicinal chemistry , crystallography , polymorphism (computer science) , stereochemistry , inorganic chemistry , organic chemistry , biochemistry , genotype , gene
Three polymorphs of a dinuclear, aqua‐bridged cobalt complex with the composition [Co 2 (μ‐OH 2 )(C 5 H 5 N) 4 (μ‐O 2 CC 6 H 4 ‐2‐NO 2 ) 2 (O 2 CC 6 H 4 ‐2‐NO 2 ) 2 ] are identified and the crystal structures are determined by X‐ray crystallography. Selective crystallisation of the polymorphs can be achieved by controlling the reaction conditions as well as the crystallisation processes. The reaction of cobalt(II) acetate tetrahydrate with 2‐nitrobenzoic acid followed by treatment with excesspyridine leads to a mononuclear complex with the composition [Co(H 2 O) 2 (C 5 H 5 N) 2 (O 2 CC 6 H 4 ‐2‐NO 2 ) 2 ]. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)