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Synthesis, X-ray analysis and DFT study of 2-amino-3-(N-oxipiridin-4-ilsulfanil)-propionic acid dihydrate

  • Rodolfo Moreno-Fuquen , Leidy Valencia , Alan R. Kennedy , Denise Gilmour and Leandro Ribeiro
Published/Copyright: August 31, 2010
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Zeitschrift für Kristallographie - Crystalline Materials
From the journal Volume 225 Issue 9

Abstract

The title compound, C8H14N2O5S 2(H2O), 2-amino-3-(N-oxipiridin-4-ilsulfanil)-propionic acid dihydrate, is obtained by the reaction of cysteine and 4-nitropyridine N-oxide in dimethylformamide, removing the NO2 group from the benzene ring and releasing nitrous acid into the solution. The molecule exists as a Zwitterion. Hydrogen bond interactions involving the title molecule and water molecules allow the formation of R55 (23) edge fused rings parallel to (010). Water molecules are connected independently, forming infinite chains (wires), in square wave form, along the b-axis. The chirality of the cysteine molecule used in the synthesis is retained in the title molecule. A density functional theory (DFT) optimized structure at the B3LYP/6-311G(3df,2p) level allows comparison of calculated and experimental IR spectra.


* Correspondence address: Universidad del Valle, Facultad de Ciencias - Departamento de Química, Apartado 25360, Santiago de Cali, Kolumbien,

Published Online: 2010-08-31
Published in Print: 2010-09

© by Oldenbourg Wissenschaftsverlag, Santiago de Cali, Germany

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