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Going one, twice…︁ Reaction of the mononuclear complex [{η5‐(tBu)2C4H2N}CrCl2(thf)] with AlEt3 afforded the dinuclear species [{[η5‐(tBu)2C4H2N]CrEt}2(μ‐Cl)2] (see picture; Cr purple, Cl green, C sticks/gray, H white). The complex acts a single‐component selective trimerization catalyst; a higher loading of AlEt3 activator afforded isomerization of 1‐hexene to cis, trans 2‐hexene.

Und die magische Zahl ist …︁ 4! Eine große Menge an oligomerfreiem 1‐Octen (99.9 %) wurde aus Ethylen bei der Bildung von Polyethylenwachs mithilfe eines Chromkatalysators erhalten (siehe GC‐MS‐Chromatogramm; die drei weiteren wesentlichen Signale stammen von Methanol (zum Abbrechen der Reaktion), Ethylacetat (Nadelreinigungsmittel) und Toluol (Solvens)).

The reactivity of carbon dioxide with vanadium(III) aryloxo complexes has been investigated. The formation of either carbon monoxide or incorporation into the ligand system with the ultimate formation of organic ester was observed depending on the overall electron donor ability of the ligand field. DFT calculations were carried out to investigate the proposed mechanism for carbon dioxide coordination and reduction.

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