XeF4 as a Ligand for a Metal Ion

摘要

Soon after the first noble-gas compound XePtF6 was published, many laboratories around the world commenced research in the field of noble-gas chemistry.Soon the first binary fluoride of xenon, XeF4, was prepared.Xenon tetrafluoride is a weak Lewis base that reacts only with strong Lewis acids yielding [XeF3]~+ salts with appropriate anions, such as [SbF6]~-, [Sb2F_(11)]~-or [BiF6]~-, and [Bi2F_(11)]-.Some molecular adducts with XeF4 were also described that resulted from the semi-ionic bonding in the molecule.The first coordination compound with a noble-gas fluoride acting as a ligand to a metal ion was [Ag(XeF2)2]AsF6.A series of such coordination compounds has since been prepared, but coordination compounds with XeF4,(a poorer Lewis base or less thermally stable than XeF2)as a metal ion ligand, were not known.