Ammonium tetrachloroaurate
 
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| Names | |
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| IUPAC name
Ammonium tetrachloroaurate(III)
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| Identifiers | |
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3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.205.444 |
| EC Number |
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PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| AuCl4H4N | |
| Molar mass | 356.81 g·mol−1 |
| Appearance | orange-red crystals |
| Density | g/cm3 |
| slightly soluble | |
| Hazards | |
| GHS labelling: | |
 
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| Danger | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Ammonium tetrachloroaurate is an inorganic chemical compound with the chemical formula NH4AuCl4.[1]
Synthesis
[edit]Ammonium tetrachloroaurate can be obtained by reacting a saturated solution of gold(III) chloride with ammonium chloride in hydrochloric acid.[2]
Physical properties
[edit]The compound is slightly soluble in water[3] and ethanol.[4] It forms hydrates.[5]
Ammonium tetrachloroaurate forms orange-yellow crystals.[6] The hydrate has a monoclinic crystal structure with the space group C 2/ c (space group no. 15).[7]
Ammonium tetrachloroaurate decomposes in air at temperatures from 230 to 350 °C . The decomposition reaction is endothermic.[8]
Uses
[edit]The hydrate is used to prepare Pd-Au alloy films.[9]
Ammonium tetrachloroaurate can be used to produce gold nanoparticles.[10]
References
[edit]- ^ Tomar, Ravi (9 August 2024). Hydrotalcite-based Materials: Synthesis, Characterization and Application. Bentham Science Publishers. p. 337. ISBN 978-981-5256-12-3. Retrieved 17 March 2025.
- ^ Physikalische Eigenschaften. Elektrochemisches Verhalten. Chemisches Verhalten. Nachweis und Bestimmung. Verbindungen, Legierungen (Achte Völlig Neu Bearbeitete Auflage ed.). Berlin, Heidelberg s.l: Springer Berlin Heidelberg. 1979. ISBN 978-3-662-12700-1. Retrieved 16 March 2025.
- ^ "Ammonium tetrachloroaurate(III) hydrate". Sigma Aldrich. Retrieved 16 March 2025.
- ^ Bonamico, M.; Dessy, G.; Furlani, C.; Capece, F. M. (15 August 1973). "The crystal and molecular structure of ammonium tetrachloroaurate(III) 2/3-hydrate". Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry. 29 (8): 1737–1739. Bibcode:1973AcCrB..29.1737B. doi:10.1107/S0567740873005418. ISSN 0567-7408. Retrieved 16 March 2025.
- ^ Shallcross, David (20 April 2020). Petroleum Engineering Explained. Royal Society of Chemistry. p. 207. ISBN 978-1-78801-668-1. Retrieved 16 March 2025.
- ^ "Ammonium-tetrachloroaurate". Johnson Matthey. Retrieved 16 March 2025.
- ^ Bonamico, M.; Dessy, G.; Furlani, C.; Capece, F. M. (15 August 1973). "The crystal and molecular structure of ammonium tetrachloroaurate(III) 2/3-hydrate". Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry. 29 (8): 1737–1739. Bibcode:1973AcCrB..29.1737B. doi:10.1107/S0567740873005418. ISSN 0567-7408. Retrieved 17 March 2025.
- ^ Price, Peter Everett (1991). Bifurcation Behavior in Laser Direct-write Metallization from Thin Films. University of Minnesota. p. 22. Retrieved 16 March 2025.
- ^ "AG6012 Ammonium Tetrachloroaurate(III) Hydrate". samaterials.com. Retrieved 16 March 2025.
- ^ Evans, Meghan; Di Maggio, Francesco; Blackman, Chris; Sankar, Gopinathan (2015). "AACVD synthesis of catalytic gold nanoparticle-modified cerium(IV) oxide thin films". Physica Status Solidi C. 12 (7): 996–1000. Bibcode:2015PSSCR..12..996E. doi:10.1002/pssc.201510055. ISSN 1610-1642. Retrieved 16 March 2025.