Proton NMR in a hydrogen molybdenum bronze
作者： A. C. Cirillo , L. Ryan , B. C. Gerstein , J. J. Fripiat
DOI: 10.1063/1.440564
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摘要: Solid state nuclear magnetic resonance (NMR) has been used to probe the nature of hydrogen in bronze H1.64MoO3. The line shape proton NMR at room temperature is found be associated only with shielding anisotropy. Below 230 K, dipolar interactions become important broadening line. response protons under a magic angle spinning experiment indicates that there predominantly one type this sample. anisotropy species not hydroxyl proton. longitudinal relaxation time material exhibits minimum between 190–320 K indicating modulated by motion are responsible for T1 relaxation. Comparison times partially deuterated and nondeuterated samples exists contribution dependent upon interproton distance. There does appear conduction electron T1.
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