Illustrated Glossary of Organic Chemistry - Doublet

Illustrated Glossary of Organic Chemistry

Doublet: In NMR spectroscopy, a split signal composed of two lines, close together. The height of the lines may be equal or unequal.


An idealized doublet		A "leaning" doublet

This simulated ¹H-NMR spectrum of sec-butyl ether has a doublet at 1.24 ppm due to the indicated methyl group. Click the image to see a larger version.

Related terms: Spin-spin coupling, first-order coupling, non-first-order coupling, splitting, first-order splitting, non-first-order splitting, coupling constant, J, chemical shift, singlet, triplet, quartet, pentet, sextet, septet, doublet of doublets, doublet of triplets, triplet of doublets, multiplet
Wikipedia entry
Return to glossary index