Ylide-gold(I) complexes of the types [Au(ylide)L]+ [Au(ylide)(CCR)] and [Au(ylide){Co(CO)4}]
摘要:
Displacement of tetrahydrothiophene (tht) from [Au(ylide)(tht)ClO4 (ylide=CH2PPh3, CH2PPh2Me, CH2PPhMe2, CHPhPPh3, CHMePPh3 or CH2AsPh3) by other neutral or anionic ligands leads to the mono- and dinuclear cationic complexes [Au(ylide)L]ClO4 (L=SbPh3 or phen) or [{Au(ylide)}2(L-L)]ClO4 (L-L=dppm or dpam), complexes with tetracarbonylcobaltate as ligand [Au(ylide){Co(CO)4}] or acetylide complexes [Au(ylide)(C=CR)] (R=Ph or (t)Bu). The structure of [Au(CH2PPhMe2)(phen)]ClO4 was established by single-crystal X-ray diffraction studies.
No cycle required: The straightforward synthesis of acyclic (amino)(ylide)carbene gold complexes was achieved by reaction of isocyanide gold complexes with phosphorus and arsenic ylides as well as electron‐rich olefins. Their ability to form bimetallic species and to act as ligand‐transfer reagents has also been established.
Synthesis and reactivity of neutral complexes of the types [AuX3(ylide)l and trans-[Au(C6F5)X2(ylide)] (X = halide or pseudohalide). X-ray structure of [Au(SCN)3(CH2PPh3)]
作者:Rafael Usón、Antonio Laguna、Mariano Laguna、M.Concepcion Gimeno、A. Pablo、Peter G. Jones、Karen Meyer-Bäse、C.F. Erdbrügger