Tetramethylammonium auride

Tetramethylammonium auride
Names
IUPAC name
N,N,N-Trimethylmethanaminium auride
Identifiers
3D model (JSmol)
  • InChI=1S/C4H12N.Au/c1-5(2,3)4;/h1-4H3;/q+1;-1
    Key: FNABMZORGWEURW-UHFFFAOYSA-N
  • C[N+](C)(C)C.[Au-]
Properties
C4H12AuN
Molar mass 271.114 g·mol−1
Density 2.87
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Tetramethylammonium auride, (CH3)4NAu, is an ionic compound containing tetramethylammonium as cation and gold in a –1 oxidation state as anion. It is an example of a compound containing this rare ionic form of gold, and the first auride paired with a cation that is not a metal atom that has been synthesized.[1]

Production

Tetramethylammonium auride can be made from caesium auride dissolved in liquid ammonia reacting with tetramethylammonium chloride or an ion exchange resin.[1]

Properties

Tetramethylammonium auride decomposes over the period of a day at room temperature to form gold. However it is stable at −55°C. Crystals are transparent.[1]

The crystal structure is tetragonal with space group P4/nmm. Unit dell dimensions are a = 7.599, c = 5.433 Å with volume V = 313.7 Å3, Z = 2 formulas per unit cell.[1]

References

  1. ^ a b c d Dietzela, Pascal D. C.; Jansen, Martin (2001). "Synthesis and crystal structure determination of tetramethylammonium auride". Chemical Communications (21): 2208–2209. doi:10.1039/B105648B. PMID 12240114.

Further reading


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