Variations on the Theme of JohnPhos Gold(I) Catalysts: Arsine and Carbene Complexes with Similar Architectures

Arsine and carbene gold­(I) complexes with architectures closely related to those of 2-(di-tert-butylphosphino)­biphenyl gold­(I) complexes have been prepared and structurally characterized. As predicted, 2-(di-tert-butylarsine)­biphenyl gold­(I) complexes are more electrophilic catalysts in comparison to their phosphine analogues, whereas those based on 4-arylindazole behave similarly to NHC-gold­(I) catalysts.