Symmetry of Calcium Thiosulphate Hexahydrate

Abstract

CALCIUM thiosulphate hexahydrate, CaS₂O₃. 6H₂O, is usually quoted in works on crystallography as an example of the triclinic asymmetric class, C₁¹—perhaps as the only known crystal which definitely represents this type of structure. It is described in Tutton's “Crystallography” (new edition, p. 280, old edition, p. 285), and, in more detail, in Groth's “Chemische Krystallographie,” vol. 2, p. 676. In the latter we read .