%0 Journal Article
%T Structural Studies of 2-Pentyl/Pentenyl-Substituted Methyl 4-Hydroxy-2H-1,2-Benzothiazine-3-Carboxylate-1,1-Dioxide
%A Muhammad Nadeem ARSHAD
%A Muhammad ZIA-UR-REHMAN
%A Islam Ullah KHAN
%A Ghulam MUSTAFA
%J Walailak Journal of Science and Technology
%D 2012
%I Walailak University
%R 10.2004/vol10iss1pp
%X Crystal structures of methyl 2-pentyl-4-hydroxy-2H-1,2-benzothiazine-3-carboxylate-1,1-dioxide 1 and methyl 2-pentenyl-4-hydroxy-2H-1,2-benzothiazine-3-carboxylate-1,1-dioxide 2 have been determined after their synthesis from saccharin. 1 and 2 crystallize in a monoclinic and orthorhombic crystal system, respectively. The asymmetric unit of both contains one molecule of each compound and shows intramolecular O-HกมกมกมO interactions generating six membered ring motifs S11(6). Intermolecular hydrogen bonding interactions have been observed in the molecule with the pentyl side chain. The thiazine ring in both molecules adopts a half chair conformation with a r.m.s. deviation of 0.2049   and 0.2161  .
%K 1
%K 2-benzothiazine
%K single crystal
%K structure studies
%K X-rays
%K oxicam
%U http://wjst.wu.ac.th/index.php/wjst/article/view/246