Stable sandwich complexes with pentamethylpyrrole ligands.
Complexation of [CpFe(SMe2)3]BF4 (Cp = cyclopentadienyl) with pentamethylpyrrole (I) gave 86% II (M = Fe, n = 1) (III). Similarly [CpCo(SMe2)3][BF4]2 and I gave 86% II (M = Co, n = 2). The crystal structure of III was detd.
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