Determination of the absolute configuration of bis(dipeptidato)cobaltate(III) complexes by 1H nuclear magnetic resonance spectroscopy

Abstract

In one diastereoisomer of [Co(L-phe–gly)₂]^– both of the methylene protons of the C-terminal CH₂ group are shifted upfield by the ring current of the aromatic ring, whereas in the other diastereoisomer only one of the protons is shifted upfield: comparison of these results with models enables the absolute configuration of the diastereoisomers to be determined.