Non-first order coupling in aromatic rings Flashcards

1
Q

3JHaHb-ortho

A

8-10 Hz

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2
Q

4JHaHb-meta

A

1-2.5 Hz

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3
Q

5JHaHb-para

A

0.25-0.5 Hz
normally to small to be observed

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4
Q

Estimation of Proton Chemical Shift in Substituted Aromatics

A

chemical shift signH = 7.27 + ∑zi

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5
Q
A
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