Diphenyl‐ and Dimesityl‐Phosphanyl‐Substituted 3,3,4,4,5,5‐Hexafluorocyclopentenyl‐Gold(I) Dimers – Syntheses and Solid‐State Structures

Abstract

Abstract1,2‐Dichloro‐3,3,4,4,5,5‐hexafluorocyclopentene (F6cypCl2) was functionalized with diphenyl‐ and dimesitylphosphanyl groups by a salt‐elimination reaction of the respective chlorophosphane (PPh2Cl, PMes2Cl) with in situ generated lithiated F6cyp(Li)Cl. F6cyp(PR2)Cl (R=Ph, Mes) was functionalised again to obtain the corresponding trimethylstannyl substituted compounds F6cyp(PR2)(SnMe3) (R=Ph, Mes). These tin‐precursors were used in tin‐gold exchange reactions to synthesize the dinuclear gold(I) dimers [F6cyp(PR2)Au]2 (R=Ph, Mes). For the mesityl substituted compound, the phosphanegold chloride adduct F6cyp(PMes2AuCl)(SnMe3), the intermediate of the tin‐gold exchange reaction, could also be isolated. All compounds were characterized by multinuclear NMR spectroscopy and X‐ray diffraction experiments.