Structural characteristics of [N(CH3)4]2CdCl4determined by1H MAS NMR,13C CP/ MAS NMR, and14N NMR

13 C CP / MAS NMR Spectra

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13C CP/MAS NMR studies of vitamin E model compounds.

13C cross-polarization magic angle spinning (CP/MAS) NMR data for 2,2,5,7,8-pentamethylchroman-6-ol (2), 6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid (Trolox c) (3) and its acetate (4), 2-methoxy-2,2,5,7,8-pentamethylchroman-6-ol (5), 2-hydroxy-2,2,5,7,8-pentamethylchroman-6-ol (6) and 2,2,5,7,8-pentamethylchroman (7) are reported. A deshielding of 7.7 ppm for the carboxylic carbon wa...

C CP / MAS NMR Study of the Layered Compounds

1 3 C C P / M A S N M R spectra were measured on the layered compounds [ C 6 H 5 C H 2 C H 2 N H 3 ] 2 [CH 3 NH 3 ] n _ 1Pb„I 3 n + j (w = 1, 2). The linewidth of the resonance peak corresponding to the phenyl carbons changed with temperature. The maximum broadening took place at 363 K for both compounds. The activation energy £ a for the reorientation of the phenyl group was determined to be 2...

Double-Quantum MAS NMR Spectroscopy

HR-MAS NMR Spectroscopy in Material Science

In the early to mid-90’s, NMR studies were being published that recognized the power of magic angle spinning (MAS) to increase resolution in materials that were not strictly solids by averaging differences in magnetic susceptibility and residual dipolar coupling inherent in these samples. The method of utilizing MAS for non-solid materials to produce liquid-like NMR lines was termed High-Resolu...