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13 Dec 2019

Identifying structures given IR and 1H NMR Spectra

http://www.chegg.com/homework-help/Organic-Chemistry-8th-edition-chapter-14-problem-77P-solution-9780134042282

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Related questions


SOLVE STRUCTURE GIVEN NMR AND CHEMICAL FORMULA

Hi everyone, I've been struggling with this NMR problem where we are given the chemical formulas of two compounds and their spectra and we need to find their structure. I'm new to this, and I would be really grateful if someone could please help me solve them, providing how they worked it out and any key pieces of information.

Compound A has a formula of C22 H25 S1 N2 F3 O3. The 19F NMR has a sharp peak at -78.5 ppm. The unintegrated signal at 2.45 is an impurity.

Spectra - 13C: https://imgur.com/a/2um3i

1H: https://imgur.com/a/qZDoQ

Compound B has a formula of C12 H12 S1 P1 I1 F6. The 31P NMR spectrum shows a septet at -145 ppm

Spectra - 13C: https://imgur.com/a/IKZqg

1H: https://imgur.com/a/cCINH

Zoomed in 13C: https://imgur.com/a/syQNC

Zoomed in 1H: https://imgur.com/a/7vN2f

Thank you so much, I really appreciate this.

EDIT: Here's a link to part A:

https://www.chegg.com/homework-help/questions-and-answers/hi-guys-could-anyone-please-help-solve-structure-nmr-chemical-formula-c22-h25-s1-n2-f3-o3--q28441462

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