Pokemon 4ever | Feedback | Sitemap
Proton nmr peak table
Most often the signal area for organic compounds ranges from ppm. The right side of the spectrum is the low energy region upfield and the left side is the high energy region downfield. We can see in the table that sp 3 hybridized C — H bonds in alkanes and cycloalkanes give signal in the upfield region shielded, low resonance frequency at the range of 1—2 ppm. The stronger the electron-withdrawing group, the more deshielded the adjacent protons and higher their ppm value. Follow us. Halogen substitution effects are complex, with fluorine and chlorine generally shifting the carbon resonance to lower field, but iodine having an opposite influence.