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Pressure Dependence of Carbonate Exchange with [NpO2(CO3)3]4– in Aqueous Solutions

Published Web Location

https://doi.org/10.1021/acs.inorgchem.6b02604
Abstract

The rates of ligand exchange into the geochemically important [NpO2(CO3)3]4- aqueous complex are measured as a function of pressure in order to complement existing data on the isostructural [UO2(CO3)3]4- complex. Experiments are conducted at pH conditions where the rate of exchange is independent of the proton concentration. Unexpectedly, the experiments show a distinct difference in the pressure dependencies of rates of exchange for the uranyl and neptunyl complexes.

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