Variants of the 1D 13C experiment

1D ¹³C spectra are often used to confirm compound identity. The simplicity of such spectra enable the number and type of carbon atoms present to be quickly evaluated. 2D ¹H-¹³C correlation spectra, while inherently more sensitive and informative, require more work to interpret and may not show signals from all carbon atoms. Consequently, 1D ¹³C spectra still have a place in compound characterization. To increase the sensitivity and information content of 1D ¹³C spectra several variants of the original pulse sequence have been developed. Several of these are discussed below.

1D 13C experiments

There are several different types of 1D ¹³C experiments available on our spectrometers. The spectra shown below were recorded using 100 mg/ml of cholesteryl acetate in CDCl₃. All spectra were recorded with 128 scans and are plotted with the same vertical scale to enable comparison of the sensitivity.