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Gold(II) sulfate

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Gold(II) sulfate is the chemical compound with the formula AuSO4 or more correctly Au2(SO4)2. This compound was previously thought to be a mixed-valent compound like AuIAuIII(SO4)2, but it was later shown that it contained the diatomic cationAu4+2, making it one of the first known examples of an inorganic gold(II) compound. The bond distance between the gold atoms in the diatomic cation is 249 pm.[1][2]

Production and properties

Gold(II) sulfate is produced by reaction of sulfuric acid and gold(III) hydroxide. Gold(II) sulfate is unstable in air and oxidizes to hydrogen disulfoaurate(III) (HAu(SO4)2).[1]

References

  1. 12Wickleder, Mathias S. (2001). "AuSO4: A True Gold(II) Sulfate with an Au24+ Ion". Journal of Inorganic and General Chemistry. 627 (9): 2112–2114. doi:10.1002/1521-3749(200109)627:9<2112::AID-ZAAC2112>3.0.CO;2-2.
  2. ↑Wickleder, Mathias S. (2007). Devillanova, Francesco A. (ed.). Handbook of chalcogen chemistry: new perspectives in sulfur, selenium and tellurium. Royal Society of Chemistry. pp. 359–361. ISBN 978-0-85404-366-8.