I need help with the mass spec problome I linked a sampe example of how the queshtion needs to be answered Example 1: show the mostfauara ble fragrentation for 2-methylpentanerodical carbocation.* 86CH3mass 15CH3itCHSCH2CH2 CH{CH3CH3CH2 CH2¢• cH3methyl rodical2° Carbocation2- methyipentane rodical carbocetionmass 43CHs블 43+ CHCH32° carbocadtionprimany radicaulThis tragmentation is more favorable because a primany radical ismore stable than a methyI radical.when answer such questians, it is best to look at tuwo possiblefrogmentation paths to analyze &compare the types of radicalscarbocations that are produced, Always go with the path that offersa more steeble carbocation andlor radičal. For this example, sinceboth produced 2° carbocation, the focus was on the types of radicalsis what it would (0ok like:431 base peakThighe'st)RelativeAlaundanceso100(m/z)Becouse the charge on the ion is typically tl, the m/z value for amolecular ion comesponds to He moleččular weight of the compounrd.*Remember that the detector Keeps frack of the number of chardedparticles and translates them into relative abundance. TTheuncharged particles will not appear. Problem 2: Show the froagmentations for 4-methyl-2-pentanoneradlcal canoocati on and explain why that is the mostfavorable path.Predicta mass spec for the stricture."로 100?9? CH3

Mass spectra provides the information about molecular mass and possible fragments of the unknown…

Answered: Problem 2: Show the fragmentations…

Problem 2: Show the fragmentations for4-methyl-2-pentanone radicael carbocation and explain why thatis themost favorable path.Predict ä mass spec for the struicture, ? R CH3

Chemistry: Matter and Change

1st Edition

ISBN:9780078746376

Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Chapter6: The Periodic Table And Periodic Law

Section6.2: Classification Of The Elements

Problem 15SSC

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Question

I need help with the mass spec problome

I linked a sampe example of how the queshtion needs to be answered

Example 1: show the mostfauara ble fragrentation for 2-methylpentane
rodical carbocation.
* 86
CH3
mass 15
CH3
it
CHSCH2CH2 CH{CH3
CH3CH2 CH2¢
• cH3
methyl rodical
2° Carbocation
2- methyipentane rodical carbocetion
mass 43
CHs
블 43
+ CHCH3
2° carbocadtion
primany radicaul
This tragmentation is more favorable because a primany radical is
more stable than a methyI radical.
when answer such questians, it is best to look at tuwo possible
frogmentation paths to analyze &compare the types of radicals
carbocations that are produced, Always go with the path that offers
a more steeble carbocation andlor radičal. For this example, since
both produced 2° carbocation, the focus was on the types of radicals
is what it would (0ok like:
431 base peak
Thighe'st)
Relative
Alaundance
so
100
(m/z)
Becouse the charge on the ion is typically tl, the m/z value for a
molecular ion comesponds to He moleččular weight of the compounrd.
*Remember that the detector Keeps frack of the number of charded
particles and translates them into relative abundance. TThe
uncharged particles will not appear.

Problem 2: Show the froagmentations for 4-methyl-2-pentanone
radlcal canoocati on and explain why that is the most
favorable path.Predicta mass spec for the stricture.
"로 100
?9? CH3

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