13How many signals would you expect to see in theCheckOsignal(s)X§'C NMR spectrum for the following compound?© 2025 McGraw Hill 13How many signals would you expect to see in theCheckOsignal(s)X§'C NMR spectrum for the following compound?© 2025 McGraw Hill

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EBK A SMALL SCALE APPROACH TO ORGANIC L

4th Edition

ISBN:9781305446021

Author:Lampman

Publisher:Lampman

Chapter31: An Oxidation–reduction Scheme: Borneol, Camphor, Isoborneol

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Problem 2Q

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CH3 2. An unknown isomer of C4H9Cl has the ¹³C NMR and DEPT-135 spectra shown below: 13C NMR: 90 70 |||| A 50 8 (ppm) CH3CH₂CH₂ CH₂ CI 30 10 DEPT-135: CH3 CH3-CHCH₂-CI B 90 70 Circle the compound that is represented by these spectra. Clearly explain your reasoning. you will need to explain how each of the other three isomers was eliminated from consideration. 50 8 (ppm) CH3CH₂ CH-CI CH3 C 30 10 CH3 CH3-C-CI CH3 D
How many peaks do you expect in this molecule's proton-decoupled 13C NMR spectrum?
13. Compound A has molecular formula C8H18. It shows one singlet in the 1H-NMR spectrum. Identify A and explain your reasoning.
G 8 HR201403000NS 18) The partial chemical structure and ¹H NMR spectrum of a compound with the formula C4H10O. Determine which of the following structures fit the spectrum (A-D). Provide a brief rationalization of the structure. 4H B) Peak 1: Peak 2: () HE 3.47 ppm 1.21 ppm 6H Triplet D) XOH I 0 Quartet ppm A) 4 Identity of Unknown: Explanation: WASTOR SERVICES FOR CHILDREN&FAMILIES wwww..
An unknown compound X has the molecular formula C6H140. Compound at 3000 cm. The 'H NMR spectral data of compound X is given below. W Here PPM values are given in delta symbol. absorption 8 ratio triplet 1.0 3 singlet 1.1 quartet singlet 1.5 3.5 3 623 6 O C) III O A) I O D) IV O B) II I 11 OH t III IV
Determine the structure of a compound with the formula C11H15ClO2 based on the 1H NMR spectrum below. Based on its 13C NMR (DEPT) spectrum, it is evident that this molecule shows 9 signals including one methyl (CH3) and four methylene (CH2) units.
For the molecules below how many signals for an 1H and 13C NMR will show?
6) The NMR spectrum of this dimethyl ether is complicated, but the diphenol has a very simple NMR: there are only two types of protons on the rings (marked a and b). Explain. OMe 0 a b OH a OMe dimethyl ether Он diphenol b
The 13C-NMR spectrum of 3-methyl-2-butanol shows signals at 17.88 (CH3), 18.16 (CH3), 20.01 (CH3), 35.04 (carbon-3), and 72.75 (carbon-2). Account for the fact that each methyl group in this molecule gives a different signal.
How would you use NMR (either 13C or 1H) to distinguish between the following pairs of isomers?
3-Bromo-1-phenyl-1-propene shows a complex NMR spectrum in which the vinylic proton at C2 is coupled with both the C1 vinylic proton (J = 16 Hz) and the C3 methylene protons (J = 8 Hz). Draw a tree diagram for the C2 proton signal, and account for the fact that a five-line multiplet is observed.
1. How many unique proton (¹H) and carbon (1³C) NMR signals would you expect for the following compounds? NH₂ "NH₂ the yax H &

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13 How many signals would you expect to see in the Check O signal(s) X § 'C NMR spectrum for the following compound? © 2025 McGraw Hill 13 How many signals would you expect to see in the Check O signal(s) X § 'C NMR spectrum for the following compound? © 2025 McGraw Hill