Platinum (IV) sulfide

Crystal structure
__ Pt 4+      __ S 2−
General
Surname	Platinum (IV) sulfide
other names	Platinum disulfide
Ratio formula	PtS 2
Brief description	black solid
External identifiers / databases
CAS number 12038-21-0 EC number 234-876-2 ECHA InfoCard 100,031,693 Wikidata Q4445870
properties
Molar mass	259.22 g mol −1
Physical state	firmly
density	7.9 g cm −3
Melting point	225–250 ° C (decomposition)
safety instructions
GHS labeling of hazardous substances no GHS pictograms H and P phrases H: no H-phrases P: no P-phrases
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Platinum (IV) sulfide is an inorganic chemical compound of platinum from the group of sulfides .

Extraction and presentation

Platinum (IV) sulfide can be obtained by reacting a stoichiometric amount of platinum with sulfur .

${\displaystyle \mathrm {Pt+2\ S\longrightarrow PtS_{2}} }$

properties

Platinum (IV) sulfide is a gray-black solid. When rubbed, it smears like graphite or molybdenum luster . Platinum (IV) sulfide that is prepared dry is completely resistant to acids and alkalis and is not attacked by ammonium and alkali sulfide solutions. Its behavior in air and when glowing in air corresponds to that of platinum (II) sulfide . Its crystal structure corresponds to the trigonal polytype 2H of the cadmium (II) iodide type (a = 353.7 pm, c = 501.9 pm).

Individual evidence

1. ↑ ^{a b c d e} data sheet platinum (IV) sulfide, Pt 74.8% min from AlfaAesar, accessed on August 30, 2013 ( PDF )(JavaScript required) .
2. ↑ WebElements: platinum disulphide
3. ↑ ^{a b} Georg Brauer (Ed.) U. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume III, Ferdinand Enke, Stuttgart 1981, ISBN 3-432-87823-0 , p. 1720.