Notizen: ⁶⁷Zn NMR Anomalous Solvent Isotope Effect in Aqueous Solutions

Abstract

For 67 Zn NMR lines of solutions of ZnCl 2 , ZnBr 2 , and ZnI 2 in H 2O and D 2 O an anomalous solvent isotope effect is reported. In D 2 O solutions the lines are shifted to higher frequencies. The difference between the shieldings in H 2 O and D 2 O is e.g. σ(H 2 O) - σ(D 2 O) = (13.1 ±0.7) ppm for a concentration of 0.02 moles zinc bromide per mole solvent.