Thallium(I) sulfide | SSHADE

Solid phase

Official name: Thallium(I) sulfide

Name and identifiers

Secondary names: Thallium sulfide; Thallous sulfide; Thallous sulphide
CAS number: 1314-97-2

Family: covalent network solid
Class: sheet covalent network solid
Compound type: sulfide

Thallium(I) sulfide

Chemical composition

Formula: $Tl_2S$
Chemical formula: Tl2S
Elemental formula: Tl2 S
Isotope mixture type: terrestrial abundance

6.0

	Formula	Name	Family	Number min-max	Mole fraction	Isotope mole fraction	State	Relevance
	$Tl$	Thallium	element	2	0.6666666666666666	1	constituent element	main
	$S$	Sulfur	element	1	0.3333333333333333	1	constituent element	main

Chemical functions and bonds

Chemical bonds

	Bond	Number
	$\geq Tl-S \mid \leq$	6

Class: sheet covalent networks (10)
Type: one metal and one non-metal atoms sheet networks (10.04)

Associated phases

Equivalent mineral: Carlinite

Crystallography

Phase type: crystalline
Crystal system: trigonal
Crystal class: pyramidal
Crystal class symbol: 3 (C3)
Crystal spacegroup: R3

Physical properties

Molar mass: 440.833 $g/mol$
Density: 8.39 $g/cm^3$

Thermodynamical properties

State NTP

solid

Phase transitions

Phase transition type	Other phases	Temperature - Pressure
solid-liquid	liquid $TlS_2$	48°C (721 K)

Optical properties

Refringence type: uniaxial
Pure color: black
Color: gray, black
Diaphaneity: opaque
Luster: metallic

Links and Publications

Links