Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Simplified Table of Proton NMR Chemical Shifts Chemical Shift, Proton(s) of interest: If the proton(s) of interest are attached to a carbon atom that: <δ2 H | (H)C—C—C(H) | C(H) is attached to alkyl groups only δ2-3 H | —C—C— | || O(C) is attached to a carbonyl group, or is allylic or benzylic δ3-5 H | —C—O | (N) (F, Cl, Br, I) is attached to oxygen, nitrogen, or halogen Some classes of compounds have unique chemical shifts: H δ 4.5 - 6.5 δ 6.5 - 8 δ 9 - 10 > δ 10 C C alkene proton(s) H aromatic ring proton(s) H—C— || O aldehyde proton(s) H—O—C— || O carboxylic acid proton(s) OH protons of alcohols and NH protons of amines can be from 1 - 5.