Germanium disulfide

Germanium disulfide
Names
	Systematic IUPAC name Germanium(IV) sulfide
Identifiers
CAS Number	12025-34-2 ;
3D model (JSmol)	Interactive image;
ChemSpider	74732 ;
ECHA InfoCard	100.031.537
EC Number	234-705-1;
PubChem CID	82816;
CompTox Dashboard (EPA)	DTXSID2065177 ;
	InChI InChI=1S/GeS2/c2-1-3 Key: YIZVROFXIVWAAZ-UHFFFAOYSA-N ; 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
Heat capacity (C)	50 J /(mol K)
Std enthalpy of; formation (ΔfH⦵298)	−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). verify (what is ?) Infobox references

Germanium disulfide or Germanium(IV) sulfide is the inorganic compound with the formula Ge S₂. 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.