Abstract

While addition of [Cp2ReH] to [Bi(OtBu)3] leads to an equilibrium containing [Cp2Re‐Bi(OtBu)2], [{Cp2Re}2Bi(OtBu)], tBuOH and [CpRe(μ‐η5,η1‐C5H4)Bi–ReCp2], in the presence of water [{(Cp2Re)2Bi}2O] (1) is formed selectively. Also [FpH] [Fp = (η5‐C5H5)(CO)2Fe] can be employed as a precursor to form heterometallic bismuth compounds. Synthesis of [FpBi{OCH(CF3)2}2]2 (5) can be achieved by reaction of [FpH] with [Bi{OCH(CF3)2}3(thf)]2 and carboxylates [FpBi(O2CR)2]2 are generated upon treatment of [FpH] with [Bi(O2CR)3] (R = CH3, tBu). While the compounds [Fp‐Bi(O2CR)2]2 can also be obtained from reactions with Fp‐Fp, they are formed far more readily using [FpH] as the precursor. They typically crystallize as dimers, like the alkoxide 5. A monomeric compound of the type [Fp‐BiX2] (6) could be isolated for X = thd (tetramethylheptanedionate), that is, after the reaction of [FpH] with [Bi(thd)3]. Altogether, the results demonstrate the potential of [FpH] as a precursor for [Fp‐BiX2] compounds, which are formed in reactions with bismuth alkoxides, carboxylates and diketonates.

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