Cationic diaryltriazene, hydrido(diaryltriazenido)-, and diarylacetamidine complexes of rhodium and iridium

Abstract

Protonation of [M(CO)L₂(RNNNR)] with HBF₄ affords either [IrH(CO)L₂(RNNNR)][BF₄](1; L = PPh₃, R =p-MeC₆H₄ or p-FC₆H₄; L = PMePh₂. R =p-FC₆H₄) or [M(CO)L₂(RNNNHR)][BF₄](2; M = Rh, L = PPh₃, R = Ph, p-MeC₆H₄, or p-FC₆H₄). Complexes (2; M = Rh or Ir), and [M(CO)L₂{MeC(NR)NHR}][BF₄](3; M = Rh or Ir, L = PPh₃, R = Ph or p-MeC₆H₄), may be prepared directly from the appropriate diaryltriazene or diarylacetamidine and [M(CO)L₂(OCMe₂)][BF₄].