July 7, 2008
by Arvin Moser, Team Manager, Application Scientists, ACD/Labs
Like a methoxy group, a t-Butyl group stands out over other 1H resonances. For organic compounds, the 1H resonance for a t-Butyl group generally towers over other 1H resonances because it integrates to ~9 protons (assuming the presence of 1 t-Butyl group and no overlap with other resonances). The basic 1H NMR pattern of the CH3 groups is a typical singlet, although not always the case, and ranging in chemical shift between 0.5 and 2.0 ppm. The 13C NMR spectrum shows the CH3 resonances between 20 and 42 ppm.
![Tbutylgroupstr_july72008 Tbutylgroupstr_july72008](https://www.acdlabs.com/wp-content/uploads/2022/06/tbutylgroupstr_july72008.gif)
The 1H NMR spectra below illustrates the 3 patterns for a t-Butyl group to be on the lookout for.
![Tbutylgroupspec_july72008 Tbutylgroupspec_july72008](https://www.acdlabs.com/wp-content/uploads/2022/06/tbutylgroupspec_july72008.gif)