Xenon as a Complex Ligand: The Tetra Xenono Gold(II) Cation in AuXe ₄ ²⁺ (Sb ₂ F ₁₁ ⁻ ) ₂

Abstract

The first metal-xenon compound with direct gold-xenon bonds is achieved by reduction of AuF(3) with elemental xenon. The square planar AuXe(4)2+ cation is established by a single-crystal structure determination, with a gold-xenon bond length of approximately 274 picometers. The bonding between gold and xenon is of the final sigma donor type, resulting in a charge of approximately 0.4 per xenon atom.