seeking expertise
 

Hello all,
I seek your expertise on a topic. I have a compound that I performed a 1H NMR temperature variation study on and there is one proton signal which moves upfield as I increase in temperature. All of the other signals remained the same. It's not like a case where the signal is coalescing (I know I demolished the spelling here) the signal just wandered upfield by about 0.8 ppm at and increase of 120 K in DMSO. Any ideas on this would be greatly appreciated!

Thanks!
Steve

it could be an exchangeable proton, possible on OH group.