Germanium disulfide

Germanium disulfide

Names
Systematic IUPAC name Germanium(IV) sulfide
Identifiers
CAS Number	12025-34-2 Y
3D model (Jmol)	Interactive image
ChemSpider	74732 Y
ECHA InfoCard	100.031.537
EC Number	234-705-1
PubChem	82816
InChI InChI=1S/GeS2/c2-1-3 Y Key: YIZVROFXIVWAAZ-UHFFFAOYSA-N Y InChI=1/GeS2/c2-1-3 Key: YIZVROFXIVWAAZ-UHFFFAOYAU
SMILES S=[Ge]=S
Properties
Chemical formula	GeS2
Molar mass	136.75 g·mol−1
Appearance	White, translucent crystals
Density	2.94 g cm−3
Melting point	840 °C (1,540 °F; 1,110 K)
Boiling point	1,530 °C (2,790 °F; 1,800 K)
Solubility in water	0.45 g/100 mL
Solubility	soluble in liquid ammonia
Magnetic susceptibility (χ)	−53.3·10−6 cm3/mol
Structure
Crystal structure	monoclinic, mP36
Space group	Pc, No. 7
Coordination geometry	tetrahedral at Ge, bent at S
Thermochemistry
Specific heat capacity (C)	50 J /(mol K)
Std enthalpy of formation (ΔfHo298)	-150.06 kJ/mol
Related compounds
Related compounds	Carbon disulfide Germanium dioxide Germanium diselenide Germanium monosulfide Lead disulfide Silicon sulfide Tin disulfide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y  (what is YN ?)
Infobox references

Germanium dioxide
Germanium diselenide
Germanium monosulfide
Lead disulfide
Silicon sulfide
Tin disulfide

Germanium disulfide or Germanium(IV) sulfide is the inorganic compound with the formula GeS₂. It is a white high-melting crystalline solid. The compound is a 3-dimensional polymer, in contrast to silicon disulfide, which is a one-dimensional polymer. The Ge-S distance is 2.19 Å.

Germanium disulfide was the first germanium compound found by Clemens Winkler, during the analysis of argyrodite. The fact that germanium sulfide does not dissolve in aqueous acid made it possible for Winkler to isolate the new element.

Germanium disulfide is created by passing hydrogen sulfide with germanium chloride in a concentrated hydrochloric acid solution.