Chromatography and Spectroscopy (OCR A-Level Chemistry A): Flashcards

No. of peaks = $n + 1$ (where $n$ = adjacent H atoms)

$\delta$, measured in ppm

Relative numbers of protons in each environment

Singlet (1 peak)

Doublet (2 peaks)

Triplet (3 peaks)

Quartet (4 peaks)

Ethyl group ($\text{CH}_3\text{CH}_2$)

$\delta = 3.0\text{-}4.5$ ppm

$\delta = 10.0\text{-}12.0$ ppm