Hydrogen bonding in proton-transfer complexes of cytosine with trimesic and pyromellitic acids

Protons-transfer complexes (1:1) of cytosine with trimesic and pyromellitic acids have been crystallized and single crystal structures have been solved by X-ray crystallography. Both cocrystals exhibit layered structures, each layer containing a plethora of N–H⋯O and O–H⋯O hydrogen bonds between the...

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Bibliographic Details
Published in:Journal of molecular structure 2008-02, Vol.873 (1), p.160-167
Main Authors: Thomas, Reji, Kulkarni, G.U.
Format: Article
Language:English
Subjects:
Cocrystals
Cytosine
Hydrogen bonding
Proton-transfer
Pyromellitic acid
Trimesic acid
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Summary:Protons-transfer complexes (1:1) of cytosine with trimesic and pyromellitic acids have been crystallized and single crystal structures have been solved by X-ray crystallography. Both cocrystals exhibit layered structures, each layer containing a plethora of N–H⋯O and O–H⋯O hydrogen bonds between the proton-transfer duplets. The cytosine–trimesic acid complex exhibits a bilayered structure (2.87 Å) in contrast to the commonly observed layered structure seen in the cytosine–pyromellitic acid complex (3.98 Å). Another layered system, an adduct of pyromellitic acid and 1,4-dihydroxy benzene, has also been studied.
ISSN:0022-2860
1872-8014
DOI:10.1016/j.molstruc.2007.03.020