Potassium tetrachloridocuprate(II)

Potassium tetrachloridocuprate(II)
Names
IUPAC name
Potassium tetrachloridocuprate(II)
Other names
Potassium tetrachlorocuprate, potassium copper(II) tetrachloride, dipotassium cupric chloride, mitscherlichite (dihydrate mineral)
Identifiers
  • InChI=1S/4ClH.Cu.2K/h4*1H;;;/q;;;;+2;2*+1/p-4
Properties
K2CuCl4 (anhydrous)
K2CuCl4·2H2O (dihydrate)
Molar mass 319.585 g/mol (dihydrate)
Appearance
greenish blue crystals (dihydrate)
Density 2.416 g/cm3 at 25 °C (dihydrate)[1]
Structure
(dihydrate:) Tetragonal.Point Group: 4/m 2/m 2/m (probable). Crystals, short prismatic along [001], or pyramidal {011}, minute; in stalactitic growths[2]
Hazards
Flash point Non-flammable
Related compounds
Other cations
 Cesium tetrachloridocuprate(II)
ammonium tetrachloridocuprate(II)
rubidium tetrachloridocuprate(II)
iron(II) tetrachloridocuprate(II)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Potassium tetrachloridocuprate(II) is a salt with chemical formula K
2CuCl
4, also written as (K+
)2·[CuCl
4]2−.

The compound is often found as the dihydrate K
2CuCl
4·2H
2O, which is a brilliant greenish blue crystalline solid.[1] This form also occurs naturally as the rare mineral mitscherlichite.[1][2]

The compound is also called potassium tetrachlorocuprate(II), dipotassium tetrachlorocuprate, potassium copper(II) tetrachloride, potassium cupric chloride and other similar names.

  1. ^ a b c Cite error: The named reference xray9 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference hbook was invoked but never defined (see the help page).