Kinetics of 1H → 31P NMR cross-polarization and dynamics in a layered crystalline α-Sn(IV) phosphate

被引：1

作者：

Bakhmutov, Vladimir I. ^{[1
,2
]}

Elliott, Douglas W. ^{[1
]}

Zhou, Hong-Cai ^{[1
]}

机构：

[1] Texas A&M Univ, Dept Chem, College Stn, TX 77843 USA

[2] Texas A&M Univ, Dept Chem, POB 30012, College Stn, TX 77842 USA

来源：

SOLID STATE NUCLEAR MAGNETIC RESONANCE | 2023年 / 127卷

关键词：

Solid-state NMR; Cross-polarization; T-1 rho relaxation times; Dynamics; SOLID-STATE NMR; PROTON TRANSPORT-PROPERTIES; ZIRCONIUM-PHOSPHATE; H-1-NMR RELAXATION; PLATELETS; DELIVERY; CENTERS; MOTIONS;

D O I：

10.1016/j.ssnmr.2023.101898

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The proton-phosphorus (H-P) cross-polarization (CP) is effective in Sn(HPO4)(2)center dot H2O despite of the presence of paramagnetic ion impurities. Polarization constants TH-P and H-1 T-1 rho times are measured in static Sn(HPO4)(2)center dot H2O by the kinetic variable-temperature H-P CP experiments. The temperature dependence of the H-1 T-1 rho times is interpreted in terms of proton movements in the interlayer space occurring between the phosphate groups without participation of the water molecules. The process requires an activation energy of 8.7 +/- 0.7 kcal/mol. The MAS effect on the H-1 T-1 rho times is shown and discussed.

引用

页数：6

共 29 条

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