title: Sodium p-toluenesulfinate tetra-hydrate.
abstract: The title compound, Na(+)·C(7)H(7)O(2)S(-)·4H(2)O, is the hydrate of the sodium salt of para-toluene-sulfinic acid. The mol-ecular geometry around the sulfur atom is tetra-hedral with X-S-Y angles spanning a range of 102.23 (6)-110.04 (6)°. In the crystal, the water mol-ecules connect the sodium cations into chains along the b axis via O-H⋯O hydrogen bonds. An inter-molecular O-H⋯π inter-action is also observed.
authors.affiliation: Nelson Mandela Metropolitan University, Summerstrand Campus, Department of Chemistry, University Way, Summerstrand, PO Box 77000, Port Elizabeth, 6031, South Africa.
authors.forename: Richard
authors.initials: R
authors.lastname: Betz
authors.forename: Thomas
authors.initials: T
authors.lastname: Gerber