Platinum (IV) iodide

Crystal structure
__ Pt 4+      __ I -
General
Surname	Platinum (IV) iodide
other names	Platinum tetraiodide
Ratio formula	PtI 4
Brief description	black solid
External identifiers / databases
CAS number 7790-46-7 EC number 232-207-9 ECHA InfoCard 100.029.280 PubChem 12978853 Wikidata Q4202663
properties
Molar mass	702.70 g mol −1
Physical state	firmly
density	6.06 g cm −3
Melting point	130 ° C (decomposition)
solubility	Decomposes in water soluble in ethanol and acetone
safety instructions
GHS labeling of hazardous substances danger H and P phrases H: 314 P: 260-303 + 361 + 353-305 + 351 + 338-301 + 330 + 331-405-501
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Platinum (IV) iodide is an inorganic chemical compound of platinum from the group of iodides .

Extraction and presentation

Platinum (IV) iodide can be obtained by reacting platinum with iodine and potassium iodide or by reacting hexachloridoplatinic acid with hydriodic acid or a sodium iodide solution.

properties

Platinum (IV) iodide is a solid that decomposes in water. It is soluble in ethanol , acetone and liquid ammonia . Three modifications of the compound are known, a less stable, cubic crystallizing form, which forms at low temperature, and two more stable forms, which have an orthorhombic and tetragonal crystal structure . The compound changes into platinum (II, III) iodide Pt ₃ I ₈ in the open system at around 300 ° C , and in the closed system (own iodine decomposition pressure) into platinum (III) iodide .

Individual evidence

1. ↑ ^{a b c d e f g h i} data sheet Platin (IV) iodide, Premion®, 99.95% (metals basis), Pt 27.3% min from AlfaAesar, accessed on August 30, 2013 ( PDF )(JavaScript required) .
2. ↑ ^{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. 1715.