A set of resonance lines arising from resolved spin coupling. Weak-coupling patterns can be assigned through coupling paths and line intensities; line count alone can be ambiguous.
An approximately six-line scalar-coupling pattern. Similar coupling to five spin-one-half partners can mimic a sextet even when those partners are not all chemically equivalent.
A first-order NMR multiplet produced by coupling to two distinct sets of three equivalent spin-one-half nuclei. Sixteen lines are possible; equal couplings can collapse the pattern to a septet.
A first-order NMR multiplet split into a doublet by one spin-one-half nucleus and into quartets by three equivalent spin-one-half nuclei. Ideally it has eight lines; overlap and second-order behavior can change its appearance.
A first-order NMR multiplet split successively by two distinct spin-one-half couplings and by two equivalent spin-one-half nuclei. Ideally it has twelve resolved lines before coincidences or further unresolved couplings.
A seven-line First-order NMR multiplet. Coupling to six equivalent spin-one-half neighbours gives the intensity ratio .
A four-line first-order pattern, often from three equivalent spin-one-half neighbours, with intensities 1:3:3:1. Equal couplings to different groups can mimic it.
A three-line first-order pattern, often from two equivalent spin-one-half neighbours, with intensities 1:2:1.
A pair of lines with the first-order splitting expected for one spin-one-half neighbour. Additional unresolved or coincident interactions can complicate the pattern.
Articles by others on the same topic
There are currently no matching articles.