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Hydrogen-bonded structures of the isomeric compounds of quinoline with 2-chloro-5-nitrobenzoic acid, 3-chloro-2-nitrobenzoic acid, 4-chloro-2-nitrobenzoic acid and 5-chloro-2-nitrobenzoic acid.
MedLine Citation:
PMID:  19805889     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
The structures of four isomeric compounds, all C7H4ClNO4.C9H7N, of quinoline with chloro- and nitro-substituted benzoic acid, namely, 2-chloro-5-nitrobenzoic acid-quinoline (1/1), (I), 3-chloro-2-nitrobenzoic acid-quinoline (1/1), (II), 4-chloro-2-nitrobenzoic acid-quinoline (1/1), (III), and 5-chloro-2-nitrobenzoic acid-quinoline (1/1), (IV), have been determined at 185 K. In each compound, a short hydrogen bond is observed between the pyridine N atom and a carboxyl O atom. The N...O distances are 2.6476 (13), 2.5610 (13), 2.5569 (12) and 2.5429 (12) A for (I), (II), (III) and (IV), respectively. Although in (I) the H atom in the hydrogen bond is located at the O site, in (II), (III) and (IV) the H atom is disordered in the hydrogen bond over two positions with (N site):(O site) occupancies of 0.39 (3):0.61 (3), 0.47 (3):0.53 (3) and 0.65 (3):0.35 (3), respectively.
Authors:
Kazuma Gotoh; Hiroyuki Ishida
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Publication Detail:
Type:  Journal Article     Date:  2009-09-30
Journal Detail:
Title:  Acta crystallographica. Section C, Crystal structure communications     Volume:  65     ISSN:  1600-5759     ISO Abbreviation:  Acta Crystallogr C     Publication Date:  2009 Oct 
Date Detail:
Created Date:  2009-10-06     Completed Date:  2009-11-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8305826     Medline TA:  Acta Crystallogr C     Country:  Denmark    
Other Details:
Languages:  eng     Pagination:  o534-8     Citation Subset:  -    
Affiliation:
Department of Chemistry, Faculty of Science, Okayama University, Okayama 700-8530, Japan.
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