Potassium hexafluorozirconate (IV)

Crystal structure
	__ K + __ Zr 4+ __ F -
Crystal system	monoclinic
Space group	C 2 / c (No. 15)
Lattice parameters	a = 6.57 (2) Å, b = 11.44 (2) Å, c = 6.94 (2) Å, β = 90.3 °
General
Surname	Potassium hexafluorozirconate (IV)
other names	Dipotassium hexafluorozirconate (IV)
Ratio formula	K 2 [ZrF 6 ]
Brief description	odorless, white crystalline solid
External identifiers / databases
EC number	240-985-6
ECHA InfoCard	100.037.244
PubChem	56828182
ChemSpider	11221760
Wikidata	Q10373018
properties
Molar mass	283.41 g mol −1
Physical state	firmly
density	3.48 g cm −3
solubility	15.5 g l −1 in water (20 ° C)
safety instructions
H and P phrases	H: 301-318
	P: 280-305 + 351 + 338-310
Toxicological data	> 98 mg / kg ( LD 50 , mouse , oral )
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Potassium hexafluorozirconate (IV) , K ₂ [ZrF ₆ ] is a chemical compound of potassium from the group of hexafluorozirconates .

properties

Crystalline potassium hexafluorozirconate

Potassium hexafluorozirconate (IV) is an odorless, white crystalline solid. It has a density of 3.48 g · cm ⁻³ . The compound crystallizes - contrary to earlier assumptions not orthorhombically - in the monoclinic space group C 2 / c (space group no. 15) with the lattice constants a = 6.57 (2) Å, b = 11.44 (2) Å, c = 6.94 (2) Å and β = 90.3 °. There are four formula units in a unit cell. Template: room group / 15

safety instructions

The salt is toxic when taken orally. It causes irritation to the skin, respiratory tract and eyes. In studies on mice administered with potassium hexafluorozirconate (IV), hepatitis , acute pulmonary edema and spasticity of the lungs were observed.

Glass and strong oxidizing agents can cause violent reactions with the compound.

Individual evidence

↑ ^a ^b ^c data sheet Potassium hexafluorozirconate from AlfaAesar, accessed on March 5, 2019 ( PDF )(JavaScript required) .
↑ ^a ^b Entry on dipotassium hexafluorozirconate in the GESTIS substance database of the IFA , accessed on January 8, 2020(JavaScript required) .
↑ ^a ^b ^c ^d data sheet Potassium hexafluorozirconate from Sigma-Aldrich , accessed on March 5, 2019 ( PDF ).
^ R. Hoppe, B. Mehlhorn: The crystal structure of K ₂ ZrF ₆ . In: Journal of Inorganic and General Chemistry . tape 425 , no. 3 , September 1976, p. 200-208 , doi : 10.1002 / zaac.19764250303 .

[ALFA-1] ta sheet Potassium hexafluorozirconate from AlfaAesar, accessed on March 5, 2019 ( PDF )(JavaScript required) .

[GESTIS-2] Entry on dipotassium hexafluorozirconate in the GESTIS substance database of the IFA , accessed on January 8, 2020(JavaScript required) .

[ALDRICH-3] ta sheet Potassium hexafluorozirconate from Sigma-Aldrich , accessed on March 5, 2019 ( PDF ).

[4] R. Hoppe, B. Mehlhorn: The crystal structure of K ₂ ZrF ₆ . In: Journal of Inorganic and General Chemistry . tape 425 , no. 3 , September 1976, p. 200-208 , doi : 10.1002 / zaac.19764250303 .