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

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On phosphorus chemical shift anisotropy in metal (IV) phosphates and phosphonates: A 31P NMR experimental study
Magnetic Resonance in Chemistry ( IF 1.9 ) Pub Date : 2022-09-19 , DOI: 10.1002/mrc.5313
Vladimir I Bakhmutov ₁ , Aida Contreras-Ramirez ₁ , Hannah Drake ₁ , Hong-Cai Zhou _{1,

2}

Affiliation

The phosphorus chemical shift anisotropies, ³¹PΔcs, and asymmetry parameters η were measured by the ³¹P{¹H} 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 HPO₄ and PO₃ groups, which does not change at modification and intercalation of the materials. The ³¹PΔcs values of the phosphonate groups (43–49 ppm) significantly surpass the values characterizing the HPO₄ groups (23–37 ppm). The ³¹P Δcs values obtained for the metal (IV) phosphates were discussed in terms of P-O distances. The ³¹P chemical shift anisotropy parameters can help at elucidation of local structures in phosphate and phosphonate materials.

中文翻译：

金属 (IV) 磷酸盐和膦酸盐中的磷化学位移各向异性：31P NMR 实验研究

磷化学位移各向异性、³¹ PΔcs 和不对称参数η通过³¹ P{ ¹ H} NMR 实验在磷酸锆和膦酸盐的静态和低频旋转样品以及混合 Zr (IV)/Sn 中测量(IV)磷酸盐/膦酸盐材料。获得的数据显示 HPO ₄和 PO ₃基团中的 111 连通性，这在材料的改性和嵌入时不会改变。膦酸酯基团的³¹ PΔcs 值 (43–49 ppm) 显着超过表征 HPO ₄基团的值 (23–37 ppm)。³¹ _根据 PO 距离讨论了金属 (IV) 磷酸盐获得的 P Δcs 值。³¹ P 化学位移各向异性参数有助于阐明磷酸盐和膦酸盐材料中的局部结构。

更新日期：2022-09-19

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