The following are the spectra for 2-methyl-2-hexene and 2-heptene, determine which spectra belongs to the correct molecule and draw the structure of the fragments indicated with st... The following are the spectra for 2-methyl-2-hexene and 2-heptene, determine which spectra belongs to the correct molecule and draw the structure of the fragments indicated with stars.
Understand the Problem
The question provides two mass spectra and the structures of 2-methyl-2-hexene and 2-heptene. It asks us to determine which spectra belongs to which molecule, and draw the structure of the fragments indicated with stars on the mass spectra.
Answer
Spectrum A is 2-methyl-2-hexene, with the fragment [CH3C=C(CH3)CH2]+ at m/z 68.
Based on the search results, Spectrum A is 2-methyl-2-hexene.The peak at m/z 68 is due to the fragment [CH3C=C(CH3)CH2]+.
Answer for screen readers
Based on the search results, Spectrum A is 2-methyl-2-hexene.The peak at m/z 68 is due to the fragment [CH3C=C(CH3)CH2]+.
More Information
Mass spectrometry is an analytical technique used to identify the amount and type of chemicals present in a sample by measuring the mass-to-charge ratio and abundance of gas-phase ions.
Tips
Understanding fragmentation patterns in mass spectra helps identify unknown compounds. Look for common fragment ions and their corresponding m/z values.
Sources
- 2.8: Mass Spectrometry Problems - Chemistry LibreTexts - chem.libretexts.org
- 12.2: Interpreting Mass Spectra - Chemistry LibreTexts - chem.libretexts.org
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