Movatterモバイル変換

Ammonium hexafluoroarsenate

From Wikipedia, the free encyclopedia

Ammonium hexafluoroarsenate
Identifiers

3D model (JSmol)	Interactive image
PubChem CID	14205731
InChI InChI=1S/AsF6.H3N/c2-1(3,4,5,6)7;/h;1H3/q-1;/p+1 Key: CXAUDRIMGKYIRL-UHFFFAOYSA-O
SMILES [NH4+].F[As-](F)(F)(F)(F)F
Properties
Chemical formula	AsF₆H₄N
Molar mass	206.951 g·mol⁻¹
Appearance	colourless crystals
Density	2.769 g/cm³
Hazards
GHS labelling:^{[citation needed]}
Pictograms
Signal word	Danger
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). Infobox references

Chemical compound

Ammonium hexafluoroarsenate is an inorganicchemical compound with the chemical formulaNH₄AsF₆.^[1]^[2]

Synthesis

[edit]

Arsenic pentoxide is mixed with an excess ofammonium fluoride; the mixture is fused to produce ammonium hexafluoroarsenate:

AsF₅ + NH₄F → NH₄AsF₆

Also, reaction ofarsenic trifluoride,hydrofluoric acid, andammonia:^{[dubious –discuss]}

AsF₃ + HF + NH₄ → NH₄AsF₆

Treatment ofhexafluoroarsenic acid and ammonia:

HAsF₆ + NH₃ → NH₄AsF₆

Physical properties

[edit]

Ammonium hexafluoroarsenate crystallizesrhombohedral with theKOsF₆ structure type, with parameters: a = 7.459(3) Å, c = 7.543(3) Å (at 200 K), Z = 3, unit cell volume 363.4 Å³, space groupR3 (No. 148).^[3]

References

[edit]

^Desmarteau, Darryl D.; Lam, William Y.; O'Brien, Brian A.; Chang, Shi-Ching (1 July 1984)."Novel ammonium hexafluoroarsenate salts from reaction of (CF3)2NH, CF3N(OCF3)H, CF3N[OCF(CF3)2]H, CF3NHF and SF5NHF with the strong acid HF/ASF5".Journal of Fluorine Chemistry.25 (3):387–394.doi:10.1016/S0022-1139(00)81212-9.ISSN 0022-1139. Retrieved4 September 2024.
^Yaws, Carl L. (6 January 2015).The Yaws Handbook of Physical Properties for Hydrocarbons and Chemicals: Physical Properties for More Than 54,000 Organic and Inorganic Chemical Compounds, Coverage for C1 to C100 Organics and Ac to Zr Inorganics.Gulf Professional Publishing. p. 731.ISBN 978-0-12-801146-1. Retrieved4 September 2024.
^Goreshnik, E.; Mazej, Z. (July 2007)."X–ray Single Crystal Structure and Raman Spectrum of Ammonium Hexafluoroarsenate".Zeitschrift für anorganische und allgemeine Chemie.633 (8):1271–1273.doi:10.1002/zaac.200700043.ISSN 0044-2313. Retrieved4 September 2024.

Retrieved from "https://en.wikipedia.org/w/index.php?title=Ammonium_hexafluoroarsenate&oldid=1291852186"

Categories:

Hidden categories:

[8]ページ先頭