Low-valent group 6 metals/Al(C6F5)3 donor–acceptor systems for CO2 activation and cleavage

Abstract

Donor–acceptor systems for CO₂ activation combining a formally zero-valent group 6 metal as the donor with the Lewis acid Al(C₆F₅)₃ (AlCF) are reported. They were obtained from AlCF adducts of N₂-complexes by N₂-to-CO₂ substitution. One species was capable of C–O cleavage. The boron analogues led to intractable mixtures.