Raghavaiah, P.; Supriya, S.; Das, S.K.
(Chemical Communications. (26); 2006; 2762-2764.)
A flip-flop extended water structure assists the formation of sulfate anion helices (both left- and right-handed) in a crystalline hydrate of a simple organic-inorganic compound [C6H10N2]SO4 center dot 1.5H2O (1).