Research Article: 4-(4-Meth­oxy­benzene­sulfonamido)­benzoic acid

Date Published: July 01, 2011

Publisher: International Union of Crystallography

Author(s): Islam Ullah Khan, Ghulam Mustafa, Mehmet Akkurt.


The asymmetric unit of the title compound, C14H13NO5S, contains two independent mol­ecules in which the dihedral angles between the aromatic rings are 83.45 (11) and 86.65 (9)°. In the crystal, the independent mol­ecules are connected by N—H⋯O and O—H⋯O hydrogen bonds, forming a double-chain structure along [401]. A weak π–π stacking inter­action with a centroid–centroid distance of 3.7509 (13) Å and C—H⋯O hydrogen bonds are also observed.

Partial Text

For background to the biological activity of sulfonamides, see: Hanson et al. (1999 ▶). For related structures, see: Mustafa et al. (2010 ▶, 2011 ▶). For bond-length data, see: Allen et al. (1987 ▶).




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