Jump to content

Potassium hexacyanochromate(III)

From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by Benjah-bmm27 (talk | contribs) at 20:03, 3 December 2020 (+ Category:Cyanometallates). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Potassium hexacyanochromate(III)
Potassium hexacyanochromate(III), recrystallised from cold water.
The crystals of potassium hexacyanochromate(III) after three recrystallisations
Names
IUPAC name
Potassium hexacyanochromate(III)
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.694 Edit this at Wikidata
EC Number
  • 237-079-8
MeSH Hexacyanochromate
  • InChI=1S/6CN.Cr.3K/c6*1-2;;;;/q;;;;;;-3;3*+1 checkY
    Key: VOCDJOPDZZSPRQ-UHFFFAOYSA-N checkY
  • [K+].[K+].[K+].N#C[Cr-3](C#N)(C#N)(C#N)(C#N)C#N
Properties
C6CrK3N6
Molar mass 325.399 g·mol−1
Appearance Vivid, yellow, opaque crystals
Density 1.71 g/cm3
30.96 g/l00 mL (20° C)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Potassium hexacyanochromate(III) is an inorganic compound with the formula K3[Cr(CN)6]. It consists of three potassium cations and [Cr(CN)6]3− anion. It is a yellow, air-stable, paramagnetic solid. It is isomorphous with potassium ferricyanide.

The salt is prepared by treating chromium(III) salts with KCN.[1][2]

References

  1. ^ G. Brauer (ed.). "Potassium Hexacyanochromate (III)". Handbook of Preparative Inorganic Chemistry. Vol. 2 (2 ed.). p. 1373. {{cite book}}: Unknown parameter |authors= ignored (help)
  2. ^ Cruser, Frederick Van Dyke; Miller, Edmund H. (1906). "The insoluble Chromicyanides". J. Am. Chem. Soc. 28 (9): 1132–51. doi:10.1021/ja01975a003.