Tetraxenonogold(II)

Tetraxenonogold(II)
Names
IUPAC name
Tetraxenonogold(II)
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/Au.4Xe/q+2;;;;
    Key: FIAFJDZYGVZLAJ-UHFFFAOYSA-N
  • InChI=1/Au.4Xe/q+2;;;;/rAuXe4/c2-1(3,4)5/q+2
    Key: FIAFJDZYGVZLAJ-YSLMZIHEAX
  • [Xe+][Au-2]([Xe+])([Xe+])[Xe+]
Properties
AuXe4+2
Molar mass 722.137 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Tetraxenonogold(II), gold tetraxenide(II) or AuXe2+
4 is a cationic complex consisting of a central gold atom surrounded by four xenon atoms. It is a covalent complex with a square planar configuration of atoms. The complex is found in the compound AuXe2+
4(Sb
2F−
11)
2 (tetraxenonogold(II) undecafluorodiantimonate). This comopund, which exists in triclinic and tetragonal crystal modifications,[1] has the AuXe2+
4 ion is stabilised by interactions with the fluoride atoms of the counterion. The Au−Xe bond length is 274 pm (2.74 Å).[2][3] Tetraxenonogold(II) is unusual in that it is a coordination complex of xenon, which is weakly basic. It is also unusual in that it contains gold in the +2 oxidation state. It can be produced by reduction of AuF3 by xenon in the presence of fluoroantimonic acid. The salt crystallises at low temperature.[4] Four xenon atoms bond with the gold(II) ion to make this complex.

It was the first description of a compound between a noble gas and a noble metal. It was first described in 2000 by Konrad Seppelt and Stefan Seidel. Several related compounds containing gold(III)–xenon and gold(I)–xenon bonds have since been isolated. A compound containing a mercury–xenon bond [HgXe]2+[Sb2F11]–[SbF6]– (xenonomercury(II) undecafluorodiantimonate hexafluoroantimonate) has also been isolated.[5]

References

  1. ^ Wai-Kee Li; Gong-Du Zhou; Thomas C. W. Mak (2008). Gong-Du Zhou; Thomas C. W. Mak (eds.). Advanced Structural Inorganic Chemistry. Oxford University Press. p. 678. ISBN 978-0-19-921694-9.
  2. ^ Li, Wai-Kee; Zhou, Gong-Du (2008). Advanced Structural Inorganic Chemistry. Thomas C. W. Mak. Oxford University Press. p. 74. ISBN 978-0-19-921694-9.
  3. ^ Mackay, Kenneth Malcolm; Mackay, Rosemary Ann; Henderson, W. (2002). Introduction to modern inorganic chemistry (6th ed.). CRC Press. p. 496. ISBN 0-7487-6420-8.
  4. ^ Konrad Seppelt, Stefan Seidel; Seppelt, K (2000-10-06). "Xenon as a Complex Ligand: The Tetraxenonogold(II) Cation in AuXe2+
    4    (Sb
    2    F−
    11    )
    2    ". Science. 290 (5489): 117–118. Bibcode:2000Sci...290..117S. doi:10.1126/science.290.5489.117. PMID 11021792.
  5. ^ Hwang, In-Chul; Seidel, Stefan; Seppelt, Konrad (2003-09-22). "Gold(I) and Mercury(II) Xenon Complexes". Angewandte Chemie International Edition. 42 (36): 4392–4395. doi:10.1002/anie.200351208. ISSN 1433-7851. PMID 14502720.


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