Both 1H and C13 NMR values of my sample can be assigned to a known molecule except at one place. From reference values and theoretical point of view, a methine proton (CH) near to a methylene proton (CH2) should give a triplet but I am getting a singlet. Why does this happen? Is there an explanation to this?
Try to share the spectrum and the molecular structure with us.
A singlet would mean that signal is not vicinally coupled to anything.
One factor is the resolution of your instrument. If the magnetic field is not strong enough, the signal might appear as a broadened singlet.
Can you show us the specific compound/structure? We might be able to give you better advise. Best, AF
C-H does not form hydrogen bonding unless it is present in an environment that makes it highly electronegative.
- Badges
- Science topic