Chemical Forums
Chemistry Forums for Students => Organic Chemistry Forum => Organic Spectroscopy => Topic started by: Misa on October 09, 2016, 08:37:08 AM
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I have been working with compounds derived from 1,10-Phenanthroline. For products with different functional groups, solvents and reaction conditions, I am seeing an amorphous peak for the protons meta to the nitrogens instead of the expected dd.
What could be reasons for this distortion?
The compounds are known to π stack and I was wondering if that could be a factor?
Any ideas would be greatly appreciated !! :D :D
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Are the other peaks in your spectra clean? When you search the literature for similarly substituted compounds, do the spectra reported also show this muddy meta proton?
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One might consider the possibility of a paramagnetic impurity. However, the hydrogen atoms closest to the paramagnetic center should show the greatest broadening, all else held equal.
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can you post the spectrum/peak?