2-D NMR-SPECTROSCOPY OF CHIRAL PHOSPHINE COMPLEXES - APPLICATIONS TO PROBLEMS RELATED TO ENANTIOSELECTIVE HOMOGENEOUS CATALYSIS

A 2-D NMR approach to elucidating problems of structure and dynamics i n chiral organometallic phosphine complexes has been suggested. The ex amples chosen concern geometric isomers and prochiral face selection i n allyl derivatives, a new bonding mode for atropisomeric chelates, ch elate ring inversion, phenyl stacking, detecting small quantities of e xchanging species and recognising equilibrating diastereomers, The met hodology, which is based on X, H-1 correlation and NOE spectroscopy, i s shown to be both versatile and potent.