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The zirconiumamide complex [(cyclo­hex-1-en­yl)cyclo­hexyl­amido]­bis­(di­cyclo­hexyl­amido)[methyl­tris­(penta­fluoro­phen­yl)borato]zirconium(IV) hexane monosolvate, [Zr{N(C6H11)2}2{N(C6H11)(C6H9)}{BCH3(C6F5)3}]·C6H14, is zwitterionic and bears a Zr+—μ-CH3—B− moiety. The reaction of tris­(di­cyclo­hexyl­amido)­methyl­zirconium with the strong Lewis acid tris­(pentafluorophen­yl)borane results in the formation of an aza­allyl zirconium motif by the loss of H2 in one di­cyclo­hexyl­amido ligand, as shown by single-crystal X-ray diffraction. The ZrIV cation is coordinated to the N atoms of two di­cyclo­hexyl­amido ligands, the π-system of one aza­allyl ligand, and to the μ-CH3—B unit, resulting in a distorted tetra­hedral coordination environment. The Zr—N distance to the aza­allyl ligand is elongated, whereas the Zr—C distance to this moiety is found to be shortened in comparison with those to the two Cy2N groups (Cy is C6H11).

Crystal structure of a zwitterionic azaallyl zirconiumamide complex bearing a Zr+-μ-CH3—B− moiety and one equivalent of n-hexane as a solvent