Synthesis and isolation of two high-nuclearity managanese(II) imido compounds: structural characterization of a compound containing a [Mn6(µ3-NPh)4]4+ core

Abstract

The reaction of the imide transfer agent [{Mg(NPh)(thf)}₆](thf = tetrahydrofuran) with MnBr₂ led to the isolation of the polynuclear manganese(II) imido compounds [{Mn₆(µ₃-NPh)₄Br₃(thf)₄}{Mg₂(µ-NHPh)(µ-Br)₂Br₂(thf)₄}]·3C₆H₅Me and [Mn₆(µ₃-NPh)₄Br₄(thf)₆] in moderate yield. A crystal structure analysis of the former revealed a formally cationic, adamantane-like Mn₆N₄ structure linked to a dimagnesium centred counter anion via Br^– bridges.