The Crystal Structure of Germanium Disulphide

Abstract

Crystals of GeS₂ are orthorhombic. The unit cell contains 24 molecules and has dimensions: a=11.66A, b=22.34A, c=6.86A. Accuracy ½ percent. The space groups is Fdd (C_2v¹⁹). Eight of the germanium atoms are situated on the twofold axes; all other atoms occupy general positions. The twelve parameters involved have been determined. Every germanium atom is tetrahedrally linked to four sulphur atoms, with an interatomic distance of 2.19A. The angle between the two sulphur bonds is 103°. A three‐dimensional network somewhat similar to the silica networks is formed.