what-are-the-expected-chemical-shifts-ppm-for-each-of-the-protons-present-in-the-1

Question

What are the expected chemical shifts (ppm) for each of the protons present in the structures given below?
Structures A and B showing protons labeled a and b for H NMR analysis in organic chemistry.

Accepted Answer

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

Answer

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

Answer

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

Answer

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