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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

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
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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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.
Transcribed Image Text: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
Transcribed Image Text: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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