2-[1-(Phenylsulfonyl)ethyl]benzoic acid and 2-[1-(phenylsulfonyl)propyl]benzoic acid
                                
                                    
                                        作者:K. Sethu Sankar、D. Velmurugan、B. T. S. Thirumamagal、S. Shanmuga Sundara Raj、H.-K. Fun、Jib-Kim Moon                                    
                                    
                                        DOI:10.1107/s0108270102004389
                                    
                                    
                                        日期:2002.5.15
                                    
                                    In the title acids, C15H14O4S, (I), and C16H16O4S, (II), respectively, the angle between the planes of the benzene ring and the carboxyl group is 13.7 (1)degrees for (I) and 21.3 (1)degrees for (II). The molecular structures are stabilized by intramolecular C-H...O hydrogen bonds. The crystal packing is stabilized by a single O-H...O hydrogen bond in both compounds, in which the O and H atoms are ordered; H...O 1.87 Angstrom for (I) and 1.83 Angstrom for (II), O...O 2.680 (2) Angstrom for (I) and 2.652 (3) Angstrom for (II), and O-H...O 172degrees for (I) and 175degrees for (II). The hydrogen bond forms a cyclic dimer, with graph-set descriptor R-2(2)(8), about a centre of symmetry.