On phosphorus chemical shift anisotropy in metal (IV) phosphates and phosphonates: A 31 P NMR experimental study.

Autor: Bakhmutov VI; Department of Chemistry, Texas A&M University, College Station, Texas, USA., Contreras-Ramirez A; Department of Chemistry, Texas A&M University, College Station, Texas, USA., Drake H; Department of Chemistry, Texas A&M University, College Station, Texas, USA., Zhou HC; Department of Chemistry, Texas A&M University, College Station, Texas, USA.; Department of Materials Science and Engineering, Texas A&M University, College Station, Texas, USA.
Jazyk: angličtina
Zdroj: Magnetic resonance in chemistry : MRC [Magn Reson Chem] 2023 Jan; Vol. 61 (1), pp. 16-21. Date of Electronic Publication: 2022 Oct 20.
DOI: 10.1002/mrc.5313
Abstrakt: The phosphorus chemical shift anisotropies, 31 PΔcs, and asymmetry parameters η were measured by the 31 P{ 1 H} NMR experiments in static and low-frequency spinning samples of the zirconium phosphates and phosphonates and also in the mixed Zr (IV)/Sn (IV) phosphate/phosphonate material. The data obtained have shown a 111 connectivity in the HPO 4 and PO 3 groups, which does not change at modification and intercalation of the materials. The 31 PΔcs values of the phosphonate groups (43-49 ppm) significantly surpass the values characterizing the HPO 4 groups (23-37 ppm). The 31 P Δcs values obtained for the metal (IV) phosphates were discussed in terms of P-O distances. The 31 P chemical shift anisotropy parameters can help at elucidation of local structures in phosphate and phosphonate materials.
(© 2022 John Wiley & Sons, Ltd.)
Databáze: MEDLINE
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