7.(...) A compound (CHO) has the IR, DEPT, 13C NMR and 'H NMR spectra below. What is structure?Explain your answer based on spectral assignments.t assign at least two bands in the IR andassign all protons in the 'H NMR spectrum.IR Spectrum(lquid film)4000100806020% of base peak16863000200016001200800V (cm³)77105M+148120Mass SpectrumUV SpectrumC10H12040 80120160200240280m/e13C NMR Spectrum(50.0 MHz, CDCI, solution)DEPT CH CH, CHproton decoupledexpansion135130 ppmsolvent20016012080max 241 nm (log10€ 4.1)solvent methanol4005 (ppm)

13C NMR: Number of signals: it tells us about how many sets of carbons in different electronic…

A compound (C,H100) has the IR, DEPT, 13C NMR and H NMR spectra below. What is structure? Explain your answer based on spectral assignments. assign all protons in the 'H NMR spectrum. 107 t assign at least two bands in the IR and IR Spectrum (iquid film) L 4000 100 80 60 % of base peak 3000 2000 105 120 20 1686 V (cm) M+- 148 1600 1200 800 Mass Spectrum UV Spectrum C10H120 40 80 120 160 200 240 280 m/e 13C NMR Spectrum (50.0 MHz, CDCI, solution) DEPT CH CH, CH proton decoupled expansion 135 130 ppm solvent 200 160 120 80 max 241 nm (log10€ 4.1) 40 solvent: methanol م & (pom)

A compound (C,H100) has the IR, DEPT, 13C NMR and H NMR spectra below. What is structure? Explain your answer based on spectral assignments. assign all protons in the 'H NMR spectrum. 107 t assign at least two bands in the IR and IR Spectrum (iquid film) L 4000 100 80 60 % of base peak 3000 2000 105 120 20 1686 V (cm) M+- 148 1600 1200 800 Mass Spectrum UV Spectrum C10H120 40 80 120 160 200 240 280 m/e 13C NMR Spectrum (50.0 MHz, CDCI, solution) DEPT CH CH, CH proton decoupled expansion 135 130 ppm solvent 200 160 120 80 max 241 nm (log10€ 4.1) 40 solvent: methanol م & (pom)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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I need help with this 13C NMR, please explain how to solve it.
A student performed a series of reactions and obtained the spectral data provided. The reaction sequence is shown below.. What are the structures for A, B, C, and D? Compound B NMR (relative integrated areas below peaks) CH;CH,O°N 1. BHTHF N-bromosuccnimide A CH;CH,OH B 2. H,O,/OH- D hv reflux Compound A NMR (relative integrated areas below peaks) PPM 5 Compound B IR INFRARED SPECTRUM PPM 5 1 6 0.8 Compound A IR INFRARED SPECTRUM 0.6 0.8 0.4 0.4 0.2- 3000 2000 Wavenumber (cm-1) 1000 The MS of compound B shows an M+ peak at 198 and an M+2 peak at 200 with a relative abundance of 1:0.97 2000 Wavenumber (cm-1) 3000 1000 Transmitance Relative Transmittance
PART 2: NMR SPECTRA #1: C4H,Cl- no important IR peaks are seen. 3.5 2H 3.0 possible structure 2.5 300 MHz 'H NMR In CDC3 2.0 it wa 1.5 2H 2H 1.0 3H 0.5 0.0
Steps in Spectral Identification: •Identify major peaks in IR spectrum, if any. •Deduce structural fragments for each of the 1H NMR spectral signals. •Give the structure of the compound •Assign the signals in the 1H NMR spectra to specific protons •Assign carbons to the peaks in the 13C NMR spectrum Step 1. Calculate the degree of unsaturation for the unknown. Step 2. Determine the functional group from IR Step 3. Analyzing the MS spectrum Step 4. Analyzing the 1H NMR spectra Determine the number of different kinds of protons Step 5. Analyzing the 13C NMR spectra
I need help with analyzing this
2. (Chapter 13 - Q58b) The compound whose H NMR spectrum is shown has the molecular formula C7H7B1. Follow the following questions to predict the unknown structure. Chem. shift Rel. area 2.31 1.50 701 1.00 7.35 1.00 TMS 10 7 6 O ppm 4 3 2 Chemical shift (8) e20s Cenge leaming 2(a) Degree of the unsaturation of this compound is= 2(b) The two distinct peaks in the aromatic region of the H NMR indicate that compound is .disubstituted = 2(c) The splitting pattern of the peak at 2.31 ő is = 2(d) The group that corresponds to the splitting pattern in 1(c) is = 2(e) This compound has the plane of symmetry Yes or No = 2(f) The name of the unknown compound = Intensity
Please identify Molecule A, formed from the reaction shown, from the 13C NMR spectra shown. All peaks below are single peaks (no overlapping peaks). Inset is an expansion of the downfield section of the spectra.
The proton NMR and IR spectra of an unknown compounds is shown on the next page. Using the molecular formula C5H12O, find L a) the index of saturation b) the structure of the unknown compound c) assign the absorption bands to the functional groups in the IR spectrum d) label all peaks in the NMR spectrum, and label the same peak on the hydrogens in the structure Transmittance (%) 100 80 60 40 20 0 3500 CT TYCE Tabdf62 2874.30 2500 Wavenumber (cm-¹) 3000 2000 1466.09 1500 1307.78 1124.04 21 seser 908.46 1000 37.21
¹H-NMR Spectra 3 M.F. = C₂H₁3NO 1 S 10 -00 8 6 PPM 4 N 21 3 ſ 2[2] -~ 2 3 j
Steps in Spectral Identification: •Identify major peaks in IR spectrum, if any. •Deduce structural fragments for each of the 1H NMR spectral signals. •Give the structure of the compound •Assign the signals in the 1H NMR spectra to specific protons •Assign carbons to the peaks in the 13C NMR spectrum Step 1. Calculate the degree of unsaturation for the unknown. Step 2. Determine the functional group from IR Step 3. Analyzing the MS spectrum Step 4. Analyzing the 1H NMR spectra Determine the number of different kinds of protons Step 5. Analyzing the 13C NMR spectra