Question from NMRWiki Q&A forum 2-Methoxybenzaldehyde

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[Question from NMRWiki Q&A forum] 2-Methoxybenzaldehyde

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06-14-2013, 07:04 AM

nmrlearner

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2-Methoxybenzaldehyde

2-Methoxybenzaldehyde

Hey everyone,

I've started practicing reading NMR again after having not done so for years, and I'm getting caught up on what must be a very simple question. For the 1H spectrum of 2-methoxybenzaldehyde, why do two of the aromatic protons exhibit identical chemical shifts (6.94 ppm)? As far as I can tell, their environments should not be equivalent. Values from the spectra may be found here: http://www.sciencesoft.net/C8H8O2/

Thanks in advance.

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