Cooperative H2 activation can be readily achieved by combination of homoleptic rare-earth aryloxides with N-heterocyclic carbenes under mild conditions.
An easily-accessible neutral scandium complex Sc[OC(CH)CHPPh][O-2,6-tBu-CH][THF] behaves as a reactive Sc/P frustrated Lewis pair, which when added to organic and inorganic substrates e.g. carbonyl compounds, transition-metal chlorides, and diazoalkane compounds, yields unique and intriguing addition products such as a Sc/Rh heterobimetallic complex and a Sc phosphazine complex.
Molecular zinc dihydrides were found to be active catalysts for hydroboration of carbon dioxide, selectively giving boryl formate, bis(boryl)acetal, or methoxy-borane compounds by varying the borane reductant.
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