13C CP/MAS NMR of a 13C-2H residual dipolar coupled pair.
When a spin-1/2 nucleus is dipolar coupled to a spin-1 nucleus, the spectrum of the spin-1/2 nucleus can be split into an asymmetric doublet in magic-angle spinning experiments. When the spin-1/2 nucleus is 13C and the spin-1 nucleus is 2H there is also the possibility of this splitting being modified by the indirect (J) coupling. 13C-2H residual dipolar couplings are seen because of the large full dipolar coupling of the nucleus pair. However, this has implications on the spinning speed used in the CP/MAS NMR experiment and the intensities of the isotropic 13C dipolar coupled to 2H. The calculation of side band intensities for slow spinning when the dipolar, quadrupolar and chemical shift tensors are axially symmetric and coaxial is discussed.
Jonsen
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Chemagnetics NMR Instruments, Otsuka Electronics (Europe) Ltd, Harrogate, UK.
Olivieri
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Tanner
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D016880:Anisotropy; D002247:Carbon Isotopes; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003903:Deuterium; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D008432:Mathematical Computing
D002247:Carbon Isotopes; D003903:Deuterium