Palladium (II) sulfide

Crystal structure
__ Pd 2+      __ S 2−
General
Surname	Palladium (II) sulfide
other names	Palladium sulfide
Ratio formula	PdS
Brief description	brown powder, blue crystals as mineral
External identifiers / databases
CAS number 12125-22-3 EC number 235-190-6 ECHA InfoCard 100,031,979 PubChem 82926 Wikidata Q2047949
properties
Molar mass	138.486 g mol −1
Physical state	firmly
density	6.7 g cm −3
Melting point	950 ° C (decomposition)
solubility	almost insoluble in water and acids, soluble in (NH 4 ) 2 S.
safety instructions
GHS labeling of hazardous substances Caution H and P phrases H: 315-319-335 P: 261-305 + 351 + 338
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Palladium (II) sulfide is a chemical compound of the elements palladium and sulfur . It is a brown salt that decomposes at 950 ° C.

Occurrence

Palladium (II) sulfide occurs naturally as a blue mineral called vysotskite .

Extraction and presentation

Palladium (II) sulfide can be obtained from the elements:

${\displaystyle \mathrm {Pd+S\longrightarrow PdS} }$

When palladium is heated with sulfur, palladium (II) sulfide is formed in a molar ratio of 1: 1.

It can also be obtained by adding hydrogen sulfide to palladium (II) salt solutions (here as an example palladium (II) chloride ):

${\displaystyle \mathrm {PdCl_{2}+H_{2}S\longrightarrow PdS+2\ HCl} }$

properties

Palladium (II) sulfide crystallizes in the tetragonal crystal system in the space group P 4 ₂ / m (space group no. 84) with the lattice parameters a  = 643  pm and c  = 661 pm and eight formula units per unit cell .

Individual evidence

1. ↑ ^{a b c d} palladium (II) sulfide at webelements.com
2. ↑ ^{a b} Werner Schröter, Karl-Heinz Lautenschläger, Joachim Teschner, Hildegard Bibrack: Taschenbuch der Chemie . 18th, corrected edition. Harri Deutsch-Verlag, Frankfurt am Main 2001, ISBN 978-3-8171-1655-3 , chap. Palladium and palladium compounds ( excerpt ( memento from August 19, 2005 in the Internet Archive )).
3. ^ ^{A b} A. F. Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 102nd edition. Walter de Gruyter, Berlin 2007, ISBN 978-3-11-017770-1 , p. 1734.
4. ↑ ^{a b} Datasheet Palladium (II) sulfide from Sigma-Aldrich , accessed on April 16, 2011 ( PDF ).
5. ^ Vysotskit. In: Mineralienatlas Lexikon. Stefan Schorn u. a., accessed on July 30, 2016 . 
6. ↑ NE Brese, PJ Squattrito, YES Ibers: Reinvestigation of the structure of PdS. In: Acta Cryst. C 1985, 41, pp. 1829-1830, doi: 10.1107 / S0108270185009623 .