Evidence for octa-co-ordination in alcohol–lanthanide-shift-reagent complexes and its implications in the search for the geometric factor govering observed shifts

Abstract

The c.d. spectral changes induced in the euroium 5F0→5D1 band (524 nm) of the shift reagent, Eu(fod)3, on complexing optically active alcohols indicate that the major species present at standard n.m.r. concentrations and ratios is octa-co-ordinated, Eu(fod)3(ROH)2.