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An Organic Compound Absorbs Strongly in the IR at 1687

Question 39

Multiple Choice

An organic compound absorbs strongly in the IR at 1687 cm-1.Its 1H NMR spectrum consists of two signals,a singlet at 2.1 ppm and a multiplet centered at 7.1 ppm.Its mass spectrum shows significant peaks at m/z 120,m/z 105 and m/z 77.This information is consistent with which of the following structures? An organic compound absorbs strongly in the IR at 1687 cm<sup>-1</sup>.Its <sup>1</sup>H NMR spectrum consists of two signals,a singlet at 2.1 ppm and a multiplet centered at 7.1 ppm.Its mass spectrum shows significant peaks at m/z 120,m/z 105 and m/z 77.This information is consistent with which of the following structures? A) I B) II C) III D) IV E) V


A) I
B) II
C) III
D) IV
E) V

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