Cerium monosulfide

Cerium monosulfide is a binary inorganic compound of cerium and sulfur with the chemical formula CeS.^[1][2][3][4] This is the simplest of cerium sulfides.

Cerium monosulfide

Names
Other names Cerium sulfide (CeS), cerium(3+) trisulfide
Identifiers
CAS Number	12014-82-3
3D model (JSmol)	Interactive image
ChemSpider	76827115
InChI InChI=1S/Ce.S Key: INJMJSIZAXAEMH-UHFFFAOYSA-N
SMILES S=[Ce]
Properties
Chemical formula	CeS
Molar mass	172.18 g·mol−1
Appearance	Yellow crystalline solid
Density	5.9 g/cm3
Melting point	2,445 °C (4,433 °F; 2,718 K)
Solubility in water	insoluble
Structure
Crystal structure	cubic
Related compounds
Other anions	Cerium monoselenide Cerium monotelluride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Synthesis

• Heating stoichiometric amounts of pure substances at 2450 °C:

Ce + S → CeS

• Reduction reaction of dicerium trisulfide and cerium hydride:^[5]

Ce₂S₃ + CeH₂ → 3CeS + H₂

Physical properties

Cerium sulfide forms yellow crystalline solid of cubic syngony crystals, space group Fm3m, cell parameter a = 0.5780 nm, Z = 4, of NaCl-type structure.^{[citation needed]}

The compound melts congruently at a temperature of 2450 °C.

Chemical properties

Cerium monosulfide has a wetting effect on metals, and it is relatively stable to metals other than platinum. It can react violently with platinum to form an intermetallic compound, platinum cerium.^[5]