Also known as [AuXe4](2+)
Tetraxenonogold(II), gold tetraxenide(II) or '''''' 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 (tetraxenonogold(II) undecafluorodiantimonate). This compound, which exists in triclinic and tetragonal crystal modifications, has the ion that is stabilised by interactions with the fluoride atoms of the counterion. The bond length is . Tetraxenonogold(II) is unusual in that it is a coordination complex of xenon, which is weakly basic. It is also unu
Tetraxenonogold(II), gold tetraxenide(II) or '''''' 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 (tetraxenonogold(II) undecafluorodiantimonate). This compound, which exists in triclinic and tetragonal crystal modifications, has the ion that is stabilised by interactions with the fluoride atoms of the counterion. The bond length is . 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 gold(III) fluoride () by xenon in the presence of fluoroantimonic acid. The salt crystallises at low temperature.
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 (xenonomercury(II) undecafluorodiantimonate hexafluoroantimonate) has also been isolated.
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).