I have synthesized one pi-conjugated aromatic molecule, in which a single proton (double bond connected, non-coupled proton) shows the singlet signal (Peak) at two different ppm values. It shows one signal at 8 ppm and another one at 10.4 ppm. At a lower concentration of sample 8 ppm signal integration is high (0.8 proton) and 10.4 ppm signal integration is low (0.2 proton). I would like to know
1. Why this proton is showing two signals at two different ppms.
2. Why this proton signal integration is changing with varying sample concentrations.
Ako Doffou
This question is outside my area of expertise.
1). www.researchgate.net/profile/Ako_Doffou
2). www.internationalresearchjournaloffinanceandeconomics.com/irjfe_award_1.htm
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