In these exercises you need to assign a molecule to the NMR signals by:

1. click on the assignement line in the table on the right

2. click on the corresponding atoms in the molecule

These are experimental spectra and may contain some impuritites like the residual solvents.

In CDCl₃, water is around 1.5ppm and CHCl₃ at 7.27.

In DMSO-d₆, water is at around 3.5 and DMSO-d₅ at 2.5.

If the solvent is not specified it is CDCl₃.

Acetone used to clean the NMR tubes may also be an impurity in the spectra as well.