4. Jing IR spectrum A compound with molecular formula C6H100 give 100 80- quo1g iynod ies daidwy 8 2quon /1650 40- 20 1720 1500 1000 400 4000 debo adoo 2s0o 2o00 Wavenumber (cm1) Identify the structure below that is most consistent with the spectrum: H. OH ɔnenceen S2U.2bnod =D owd gniwollot erit not noitg1ozds to dmunevew ert 16gmo hir
4. Jing IR spectrum A compound with molecular formula C6H100 give 100 80- quo1g iynod ies daidwy 8 2quon /1650 40- 20 1720 1500 1000 400 4000 debo adoo 2s0o 2o00 Wavenumber (cm1) Identify the structure below that is most consistent with the spectrum: H. OH ɔnenceen S2U.2bnod =D owd gniwollot erit not noitg1ozds to dmunevew ert 16gmo hir
Organic Chemistry: A Guided Inquiry
2nd Edition
ISBN:9780618974122
Author:Andrei Straumanis
Publisher:Andrei Straumanis
ChapterL3: Carbon (13c) Nmr Spectroscopy
Section: Chapter Questions
Problem 13E
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Can i get help with these problems number 4
Expert Solution
Step 1
Stretching frequency 1720 cm-1 corresponds presense of carbonyl functional group
1650 cm-1 corresponds to ( c=c ) group
Thus most suitable structure which has both ketone functionality and (C=C ) unit are
But amoung them alpha-beta unsaturated carbonyl unit ( 2nd ) molecule due to conjugation, both ketone and alkene has less stretching frequency as expected.
Thus correct matching is noticed in case of 1st compound.
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