Uranium monosulfide

Uranium monosulfide (US) is an inorganic chemical compound of uranium and sulfur.^[2] It is produced by combining uranium metal powder with hydrogen sulfide to form uranium disulfide, followed by sulfur loss during high-temperature, vacuum annealing.^[3]

Uranium monosulfide

Identifiers
CAS Number	12039-11-1
3D model (JSmol)	Interactive image
InChI InChI=1S/S.U Key: BFEBVEVTVKJYGD-UHFFFAOYSA-N
SMILES [U].[S]
Properties
Chemical formula	US
Molar mass	270.095 g/mol
Melting point	2460 °C [1]
Structure[1]
Crystal structure	NaCl type (cubic)
Space group	Fm3m (No. 225)
Lattice constant	a = 548.66 pm
Formula units (Z)	4
Related compounds
Other anions	Uranium carbide Uranium monophosphide
Related compounds	Uranium disulfide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Magnetically, the compound is paramagnetic at room temperature, with a Curie Temperature of 180 K.^[4] It has the largest known magnetocrystalline anisotropy of any cubic system.^[5]