Np(V) double carbonate with magnesium: synthesis, solubility and transformation

Materials for the article "Np(V) double carbonate with magnesium: synthesis, solubility and transformation". The data provided includes: 1) XRD data for Np(V) double carbonates with sodium, magnesium and potassium. 2) Solubility data for Np(V) double carbonate with magnesium in 0.01 M and 0.05 M NaClO4 solution with kinetic changes in Np, Mg and K concentration. 3) Solubility data for Np(V) double carbonate with potassium in 0.01 M KHCO3/K2CO3 solutions with kinetic changes in Np and K concentrations.