Chemical Shift Data

As previously mentioned, different kinds of protons typically come at different chemical shifts. Shown below is a chart of where some common kinds of protons appear in the d scale. Note that most protons appear between 0 and 10 ppm. The reference, tetramethylsilane (TMS) appears at 0 ppm, and aldehydes appear near 10 ppm. There is a page in your lab handout with more precise values for this chart.

Note that these are typical values and that there are lots of exceptions!