Heteronuclear 1H-13C Multiple-Spin Correlation in Solid-State Nuclear Magnetic Resonance: Combining Rotational-Echo Double-Resonance Recoupling and Multiple-Quantum Spectroscopy

Content Provider	Semantic Scholar
Author	Saalwächter, Kay Spiess, Hans Wolfgang
Copyright Year	2001
Abstract	High-resolution magic-angle spinning (MAS) solid-state nuclear magnetic resonance (NMR) spectroscopy exploiting the dipole–dipole coupling between unlike spins is a powerful tool for the study of structure and dynamics. In particular, the rotational-echo double-resonance (REDOR) technique has established itself as a method for probing heteronuclear dipole–dipole couplings in isotopically dilute systems of low-γ nuclei. In organic substances it is, however, particularly advantageous to consider heteronuclear spin-pairs such as 1H–13C, on account of the high natural abundance of 1H and thus a much wider range of possible applications, such as the determination of order parameters in liquid crystals and polymer melts. We describe the possibility of performing 13C-observed REDOR in 1H–13C systems, where very-fast MAS with spinning frequencies of up to 30 kHz is used to successfully suppress the perturbing homonuclear couplings among the protons, which would usually be expected to hamper a proper data analysis...
Starting Page	5707
Ending Page	5728
Page Count	22
File Format	PDF HTM / HTML
DOI	10.1063/1.1352618
Alternate Webpage(s)	http://www.physik.uni-halle.de/Fachgruppen/nmr/kay/hmqc-redor_jcp01.pdf
Alternate Webpage(s)	https://doi.org/10.1063/1.1352618
Volume Number	114
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article