Secondary deuterium isotope effect on Lewis basicity: tris(dipivaloylmethanato)-europium as a simple and effective probe

Abstract
Investigation of equilibrium isotope effects via competition experiments with the paramagnetic shift reagent Eu(dpm)3 is described and it is shown that in the aliphatic alcohols studied deuterium is effectively more electropositive than protium; the method may be extended to other substituents.

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