The chemical environment of carbons can be deduced form their chemical shifts. D

Question

The chemical environment of carbons can be deduced form their chemical shifts. Deduce the relative chemical shifts of the carbons at the labeled positions. (Carbons that are highly shielded have low delta, chemical shift, values.)

The carbon with the smallest delta value (the most shielded) is?___
The carbon with the largest delta value (the most deshielded) is?___

The carbon with the smallest delta value (the most shielded) is?___
The carbon with the largest delta value (the most deshielded) is?___

Explanation / Answer

I. Carbon with smallest delta value is a

carbon with the largest delta value is c

II.

The carbon with the smallest delta value is b

The carbon with the largest delta value is a

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