Figure - PMC

Skip to main content

View full-text article in PMC

. Author manuscript; available in PMC: 2024 Dec 18.

Published in final edited form as: Inorg Chem. 2023 Feb 1;62(50):20567–20581. doi: 10.1021/acs.inorgchem.2c03931

Figure 5. — ¹H NMR of K[Sc(HOPO)] taken at different pH’s in D₂O. pH was measured by pH probe, which introduced H₂O to the sample. Although peak suppression for H₂O was used in the NMR method, the quantity of water was too great for it to be effective. pH was adjusted with K₂CO₃ and DCl. The resultant increase of KCl concentration results in minor chemical shift changes for both the analyte and the solvent peak.

Figure 5. — ¹H NMR of K[Sc(HOPO)] taken at different pH’s in D₂O. pH was measured by pH probe, which introduced H₂O to the sample. Although peak suppression for H₂O was used in the NMR method, the quantity of water was too great for it to be effective. pH was adjusted with K₂CO₃ and DCl. The resultant increase of KCl concentration results in minor chemical shift changes for both the analyte and the solvent peak.