RESUMEN
Hitherto unknown AuâAl interactions have been evidenced upon coordination of the geminal phosphorus-aluminum Lewis pair Mes2 PC(=CHPh)AltBu2 (Mes=2,4,6-trimethylphenyl). Four different gold(I) complexes featuring alkyl (Me), aryl (Ph, C6F5), and alkynyl (C≡CPh) co-ligands have been prepared. X-ray diffraction analyses show that PâAuâAl bridging coordination induces noticeable bending of the ligand (the PCAl bond angle shrinks by 13°). This new type of transition metalâLewis acid interaction has been analyzed by DFT calculations.
Asunto(s)
Aluminio/química , Oro/química , Complejos de Coordinación/química , Cristalografía por Rayos X , Ácidos de Lewis/química , Conformación Molecular , Fósforo/química , Elementos de Transición/químicaRESUMEN
Coordination of Mes2PC(=CHPh)AltBu2 to metal chlorides has been studied. Bridging PâM-ClâAl coordinations were observed with Rh and Pd fragments, while chloride abstraction systematically occurred with gold. The resulting zwitterionic complexes have been fully characterized and analyzed by DFT calculations.