Trihapto‐Koordination eines Borirens an ein einzelnes Metallatom: ein heterocyclisches Analogon des η3‐Cyclopropenylliganden

Ein erstes Beispiel fur einen einkernigen Komplex mit einem η3-koordinierten Borirenliganden wurde durch photolytischen Transfer eines Arylborylens auf Diphenylacetylen und Abspaltung von drei CO-Gruppen aus dem Edukt erhalten. Der η3-Borirenkomplex enthalt ein Chrom(0)-Zentrum, das zusatzlich η6-artig an eine Phenylgruppe koordiniert. Der Komplex wird mit 15 % Ausbeute isoliert, und auserdem fallt das Metall-freie Boriren in 62 % Ausbeute an. Die Bindung des Chromzentrums an den Borirenring wurde mit DFT-Methoden untersucht.

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