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H NMR For the diastereomers of 1,2-diphenyl-1,2-ethanediol: How do the H NMR spectra change between the...

H NMR

For the diastereomers of 1,2-diphenyl-1,2-ethanediol:

How do the H NMR spectra change between the meso diol and either the R,R or S,S diol? I know that they're different, but I'm unsure why.

Thank you for your help

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