Although 2,2-dimethylhexane has a molecular weight of 114, no peak is observed at m/z = 114. The base peak in the mass spectrum occurs at M-57 (a) Draw the fragmentation responsible for the formation of M-57 ion (b) Explain why this cation is the most abundant ion to pass through the spectrometer. (c) Explain why no molecular ion survive long enough to be detected

Organic Chemistry
9th Edition
ISBN:9781305080485
Author:John E. McMurry
Publisher:John E. McMurry
Chapter12: Structure Determination: Mass Spectrometry And Infrared Spectroscopy
Section12.SE: Something Extra
Problem 15AP: Write molecular formulas for compounds that show the following molecular ions in their...
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Although 2,2-dimethylhexane has a molecular weight of 114, no peak is observed at m/z = 114. The base peak in the mass spectrum occurs at M-57

(a) Draw the fragmentation responsible for the formation of M-57 ion

(b) Explain why this cation is the most abundant ion to pass through the spectrometer.

(c) Explain why no molecular ion survive long enough to be detected.

(d) Can you offer an explanation as to why M-15 peak is not the base peak?           

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