1H NMR Flashcards by ar j | Brainscape

Q

Vicinal coupling constant

A

7, due to rapid rotation at room temperature

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Q

5H around 7ppm

A

Monosubstituted benzene ring

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Q

4H around 7ppm

A

Disubstituted benzene ring

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Q

~3.8ppm

A

Methyl next to an oxygen

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Q

~2.2ppm

A

Methyl next to C=O or a benzene ring

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Q

of resonance signal’s splitting

A

2nI + 1 when a nucleus couples to n equivalent nuclei with spin I

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Q

Geminal (alkene) coupling constant

A

2

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Q

Trans (alkene) coupling constant

A

15

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Q

Cis(alkene) coupling constant

A

8

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Q

Germinal coupling constant

A

13

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Q

Reference compound

A

TMS

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Q

Solvent

A

CDCl3 80ppm

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