Proton NMR Absorption of Major Chemical

Chanical-Shift Ranges of Some Nuclei Reference Standards for Selected Nuclei H and C Chemical Shifts of Useful NMR Solvents Proton NMR Absorptions of Major Functional Groups Some Useful H Coupling Constants Additivity Rules in C NMR Correlation Tables Alkanes Alkenes Alkynes... 

Nuclear Spins, Moments, and Other Data Related to NMR Spectroscopy Proton NMR Chemical Shifts for Characteristic Organic Structures 13C NMR Absorptions of Major Functional Groups... 

The carbon-proton dipolar interaction and the chemical shift anisotropies broaden the lines in solid state 13C NMR spectra. The major effect arises from the dipolar coupling of the carbon nuclei with neighboring protons homonuclear dipolar couplings between two adjacent 13C nuclei are neglegible because of their low natural abundance. The large magnitude of dipolar 13C— H coupling (up to 40 kHz) results in broad and structureless proton-coupled 13C NMR absorptions. 

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