Iridium (IV) chloride

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General
Surname Iridium (IV) chloride
other names

Iridium tetrachloride

Molecular formula IrCl 4
Brief description

black solid (hydrate)

External identifiers / databases
CAS number
  • 10025-97-5
  • 207399-11-9 (hydrate)
PubChem 24815
Wikidata Q4498214
properties
Molar mass 334.03 g mol −1
Physical state

firmly

density

5.3 g cm −3 (hydrate)

Melting point
  • 700 ° C (decomposition)
  • > 350 ° C (hydrate)
solubility
  • soluble in water and ethanol
  • soluble in water (hydrate)
safety instructions
GHS labeling of hazardous substances

hydrate

07 - Warning

Caution

H and P phrases H: 302-315-319-335
P: 261-305 + 351 + 338
Toxicological data

1560 mg kg −1 ( LD 50ratoral )

As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Iridium (IV) chloride is an inorganic salt from the group of chlorides with iridium as the cation .

Extraction and presentation

Iridium (IV) chloride can be obtained by reacting ammonium hexachloroiridate with chlorine or aqua regia . The products shown mostly contain iridium (III) chloride or hydrogen chloride as an admixture, which is why the existence of the compound is not considered certain by some literature.

properties

Iridium (IV) chloride, as a hydrate, is a black solid that is soluble in water. The anhydrate is a brown, hygroscopic amorphous solid that is soluble in water and ethanol.

use

Iridium (IV) chloride is used in chemical analysis to test for nitric acid , in microscopy and in electroplating solutions . It acts as a catalyst precursor for the stereoselective reduction of cyclohexanones .

Individual evidence

  1. a b c d e f g h i data sheet Iridium (IV) chloride, ≥99.9% trace metals basis from Sigma-Aldrich , accessed on February 20, 2018 ( PDF ).
  2. ^ A b c William M. Haynes: CRC Handbook of Chemistry and Physics, 97th Edition . CRC Press, 2016, ISBN 978-1-4987-5429-3 , pp. 101 ( limited preview in Google Book search).
  3. Jane E. Macintyre: Dictionary of Inorganic Compounds . CRC Press, 1992, ISBN 978-0-412-30120-9 , pp. 2952 ( limited preview in Google Book search).
  4. HJ Kandiner: Iridium . Springer-Verlag, 2013, ISBN 978-3-662-12128-3 , pp. 63 ( limited preview in Google Book search).
  5. Erwin Riedel, Christoph Janiak: Inorganic Chemistry . Walter de Gruyter, 2011, ISBN 978-3-11-022566-2 , p. 877 ( limited preview in Google Book search).
  6. ^ AF Holleman , N. Wiberg : Inorganische Chemie . 103rd edition. Volume 2: Subgroup elements, lanthanoids, actinides, transactinides. Walter de Gruyter, Berlin / Boston 2016, ISBN 978-3-11-049590-4 , pp. 2010–2011 (reading sample: Part C - Subgroup elements. Google book search ).
  7. Data sheet Iridium (IV) chloride, Premion®, 99.95% (metals basis), Ir 56.5% min from AlfaAesar, accessed on February 20, 2018 ( PDF )(JavaScript required) .