顺磁杂质污染层状α-Sn(IV)磷酸盐中磷-31核磁共振弛豫的自旋扩散

IF 1.8 3区化学 Q4 CHEMISTRY, PHYSICAL

Solid state nuclear magnetic resonance Pub Date : 2023-08-01 DOI:10.1016/j.ssnmr.2023.101875

Vladimir I. Bakhmutov , Douglas W. Elliott , Nattamai Bhuvanesh , Hong-Cai Zhou

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引用次数: 1

摘要

通过固态NMR对层状晶体磷酸锡（IV）的研究表明，磷酸基团的31P T1弛豫取决于纺丝速率，完全由EPR发现的顺磁离子的有限自旋扩散控制。自旋扩散常数D（SD）估计为2.04 10−14 cm2s−1。这一结论得到了磷酸锆1–1中31P T1时间测量的支持，也显示了顺磁性离子和抗磁性化合物（NH4）2HPO4。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Spin diffusion in the Phosphorus-31 NMR relaxation in a layered crystalline α-Sn(IV) phosphate contaminated by paramagnetic impurities

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Spin diffusion in the Phosphorus-31 NMR relaxation in a layered crystalline α-Sn(IV) phosphate contaminated by paramagnetic impurities

The study of a layered crystalline Sn(IV) phosphate by solid-state NMR has demonstrated that the ³¹P T₁ relaxation of phosphate groups, dependent on spinning rate is completely controlled by the limited spin diffusion to paramagnetic ions found by EPR. The spin-diffusion constant, D(SD), was estimated as 2.04 10⁻¹⁴ cm²s⁻¹. The conclusion was supported by the ³¹P T₁ time measurements in zirconium phosphate 1–1, also showing paramagnetic ions and in diamagnetic compound (NH₄)₂HPO₄.

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来源期刊

Solid state nuclear magnetic resonance 物理-光谱学

CiteScore

5.30

自引率

9.40%

发文量

审稿时长

72 days

期刊介绍： The journal Solid State Nuclear Magnetic Resonance publishes original manuscripts of high scientific quality dealing with all experimental and theoretical aspects of solid state NMR. This includes advances in instrumentation, development of new experimental techniques and methodology, new theoretical insights, new data processing and simulation methods, and original applications of established or novel methods to scientific problems.