|Science & Fun | Home | Introduction into the 1H NMR Spectroscopy|
Sorry, wrong answer!Have another, closer look at the isomer and follow the approach out-lined on page 19:
One option is to analyze the remainder of the molecule from the view point of each single proton, for example from H1 and H3:
H1 and H3 obviously have entirely identical environments. They should give rise to a single signal.
Alternatively you can make use of the symmetry of the molecule.
Did you notice that this molecule has an axis of two-fold rotational symmetry (C2) ?
Therefore H1 and H3 exchange positions upon a 180° rotation around (C2)!