Gold(I) and Mercury(II) Xenon Complexes

摘要

During detailed investigation of the reaction which produced the first gold xenon compound [AuXe_4]~(2+)(Sb_2F_(11)]_2~- a number of further gold)II) xenon compounds were discovered. In only one instance could a gold(III) xenon compound be detected. However, gold occurs most frequently in its complexes as gold(I). At a first glance a gold(I) xenon bond may not appear particularly favored as gold(I) has a fully occupied 5d shell, but this consideration totally overlooks the relativistic effect, which,in the periodic system, reaches a first maximum for gold. At a first glance a gold(I) xenon bond may not appear particularly favored as gold(I) has a fully occupied 5d shell, but this consideration totally overlooks the relativistic effect, which, in the periodic system, reaches a first maximum for gold. The [AuXe]~+ ion has already been detected by mass spectrometry. According to experimentation and calculation this cation has a bond energy of 30 ± 3 kcal mol, a gold-xenon bond length of 276.1 pm was predicted. A linear [AuXe_2]~+ ion could also exist.