Abstract
The P, N-[3]ferrocenophane ligand 3 forms a (κ P-ligand)AuCl complex ( 5) upon treatment with (Me 2S)AuCl. The corresponding P, P-[3]ferrocenophane system 4 yields a binuclear (κ P,κ P-chelate ligand)(AuCl) 2 complex ( 6) when reacted with 2 equivalents of the (Me 2S)AuCl reagent. Complex 6 features an intramolecular aurophilic Au⋯Au interaction. Treatment of the P, P-[3]ferrocenophane 4 with 1.0 equiv. of (PPh 3)AuCl gives the tetra-coordinated mono-gold(I) complex ( P, P-ligand)(PPh 3)AuCl ( 7), whereas the cationic [( P, P-ligand) 2Au] +[Cl −] system is obtained from 4 and 0.5 equivalents of (Me 2S)AuCl. The [( P, P-ligand) 2Au] + system is obtained in different diastereoisomeric forms ( 8 and 9) depending on the stereochemistry of the pair of P, P-[3]ferrocenophane chelate ligand used. Examples of the complexes 5, 6, 7 and 8 were characterized by X-ray diffraction.
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