Molybdenum oxysulfide | SSHADE

Solid phase

Official name: Molybdenum oxysulfide

Family: covalent network solid
Class: tridimentional covalent network solid
Compound type: sulfide
Comments: see Ryaboshapka and Afanasiev (2023) Journal of Catalysis 426, 30.

Chemical composition

Formula: $MoOS_2$
Chemical formula: MoOS2
Elemental formula: Mo O S2
Isotope mixture type: terrestrial abundance

8.0

	Formula	Name	Family	Number min-max	Mole fraction	Isotope mole fraction	State	Relevance
	$Mo$	Molybdenum	element	1	0.25	1	constituent element	main
	$O$	Oxygen	element	1	0.25	1	constituent element	main
	$S$	Sulfur	element	2	0.5	1	constituent element	main

Chemical functions and bonds

Chemical bonds

	Bond	Number
	$> \mid Mo=O$	1
	$\geq \mid Mo-S-$	4

Class: glasses (12)
Type: multi mixed atoms glasses (12.06)

Crystallography

Phase name: amorphous MoOS2
Phase type: amorphous
Crystal system: amorphous
Crystal class: N/A
Comments: amorphous $MoOS_2$ is a Mo(V) compound, containing $Mo_2O_2S_4$ units connected via disulfide bridges

Physical properties

Molar mass: 176.1 $g/mol$

Thermodynamical properties

State NTP

solid

Phase transitions

Phase transition type	Other phases	Temperature - Pressure
solid decomposition	$MoO_2$, MoS_2$ solids	above ~150°C

Optical properties

Refringence type: isotropic
Pure color: brown
Color: dark brown
Diaphaneity: subtranslucent to opaque