How to recognize ortho, meta or para substitution in an H NMR spectrum

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Neon
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How to recognize ortho, meta or para substitution in an H NMR spectrum

Post by Neon »

Hello,

I don't know how to tell from the H NMR spectrum whether benzene is ortho, meta or para disubstituted. In particular, I don't know how to distinguish between ortho and meta? In the exam we have realistic spectra and it is really not clear to me how to distinguish between these possibilities
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ChenBeier
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Re: How to recognize ortho, meta or para substitution in an H NMR spectrum

Post by ChenBeier »

Explanation here on Dichlorobenzene

https://m.youtube.com/watch?v=nFmxjpkGuNE

In your example you see a doublet at 7.5 to 7.8, so it's ortho.
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