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15. Analytical Techniques:IR, NMR, Mass Spect - Part 3 of 4

15. Analytical Techniques:IR, NMR, Mass Spect - Part 3 of 4

15. Analytical Techniques:IR, NMR, Mass Spect / H NMR Table / Problem 3

What are the expected chemical shifts (ppm) for each of the protons present in the structures given below?

ANSWERS OPTIONS

A

(a). Protons 'a' = δ 1.5, protons 'b' = δ 3.5.
(b). Proton 'a' = δ 2.5, protons 'b' = δ 2.3.

B

(a). Protons 'a' = δ 3.5, protons 'b' = δ 1.2.
(b). Proton 'a' = δ 1.5, protons 'b' = δ 2.9.

C

(a). Protons 'a' = δ 0.8, protons 'b' = δ 2.2.
(b). Proton 'a' = δ 1.1, protons 'b' = δ 7.2.

D

(a). Protons 'a' = δ 3.5, protons 'b' = δ 1.2.
(b). Proton 'a' = δ 2.5, protons 'b' = δ 2.3.

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