Illustrated Glossary of Organic Chemistry

Pentet (quintet): In NMR spectroscopy, a split signal composed of five lines, close together. The height of the lines will be close to a 1:4:6:4:1 ratio.


Idealized pentet Lines in a 1:4:6:4:1 ratio		"Leaning" pentet

This simulated ¹H-NMR spectrum of sec-butyl ether has a pentet at 1.44 ppm due to the molecule's CH₂ group. Click image for 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, doublet, triplet, quartet, sextet, septet, multiplet, doublet of doublets, doublet of triplets, triplet of doublets
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