General Entry to Novel Manganese(II) Half‐Sandwich Complexes

Abstract
The chemistry of half‐sandwich complexes is of interest, inter alia, because of the high reactivity of these compounds and because of their potential use for the synthesis of novel complexes. From the manganocene 1, the dimeric PEt3 derivatives 3 were synthesized via the THF complexes 2; 3, X  Cl, is confirmed by X‐ray structure analysis. Surprisingly, 2, X  I, reacts with PMe3 to give the monomeric complex Cp′MnI(PMe3)2. MnII half‐sandwich complexes were hitherto unknown (Cp′  MeC5H4). equation image

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