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Spectra C 200 180 160 140 120 100 BO 60 40 20 ppm 11 10 9 8 7 6 5 4 3 ppm 4000 3000 2000 Wavenumbers, cm¹ 1500 1000 500 Structure: IR: 13C NMR: • Number of types of C: • Chemical shift(s) of signals: 'H NMR: Number of types of H: Chemical shift(s) of signals: Integrations: Multiplicity of peaks: nonet

Spectra C 200 180 160 140 120 100 BO 60 40 20 ppm 11 10 9 8 7 6 5 4 3 ppm 4000 3000 2000 Wavenumbers, cm¹ 1500 1000 500 Structure: IR: 13C NMR: • Number of types of C: • Chemical shift(s) of signals: 'H NMR: Number of types of H: Chemical shift(s) of signals: Integrations: Multiplicity of peaks: nonet

Chemistry
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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Spectra C 3000 200 180 160 140 120 100 BO 80 B-4-A ppm 4000 3000 2000 8. 10 40 20 11 10 9 7 6 5 3 ppm M 1000 1500 1000 500 Structure: IR: 13C NMR: • Number of types of C: ⚫ Chemical shift(s) of signals: 'H NMR: Number of types of H: Chemical shift(s) of signals: • Integrations: Multiplicity of peaks: Wavenumbers, cm N nonet 0
Transcribed Image Text:Spectra C 3000 200 180 160 140 120 100 BO 80 B-4-A ppm 4000 3000 2000 8. 10 40 20 11 10 9 7 6 5 3 ppm M 1000 1500 1000 500 Structure: IR: 13C NMR: • Number of types of C: ⚫ Chemical shift(s) of signals: 'H NMR: Number of types of H: Chemical shift(s) of signals: • Integrations: Multiplicity of peaks: Wavenumbers, cm N nonet 0
Objectives: To use spectroscopic data to identify organic molecules To predict infrared and 'H and 13C NMR spectroscopic data for organic molecules. Through the above, to gain comfort with spectroscopy and mass spectrometry as they are used in modem organic chemistry. 1. The skeletal structures for a set of seven C4H10 alcohols and ethers are provided below (although just for fun, you could cover them and make sure that you could draw them!). Determine which of the seven compounds matches with each of the five following sets of data, A-E, consisting of infrared and 'H and 13C NMR spectra. You may find it helpful to draw or redraw them showing the hydrogens explicitly, and/or to determine the number of types of H's and C's. On the page of each data set, draw the structure of the corresponding molecule with the data, and indicate, for each spectrum, what about those data is important in determining that the correct molecule has been chosen. In the case of the IR spectrum, cite absorbance bands that are present (or absent). For the 13C NMR spectrum and 'H NMR spectrum describe how the number of signals and their chemical shifts fit the structure chosen. For the 'H spectrum, also do the same with the data from integration of the signals and their multiplicity. Structures of the four alcohols and three ethers: OH TOH to OH Дон
Transcribed Image Text:Objectives: To use spectroscopic data to identify organic molecules To predict infrared and 'H and 13C NMR spectroscopic data for organic molecules. Through the above, to gain comfort with spectroscopy and mass spectrometry as they are used in modem organic chemistry. 1. The skeletal structures for a set of seven C4H10 alcohols and ethers are provided below (although just for fun, you could cover them and make sure that you could draw them!). Determine which of the seven compounds matches with each of the five following sets of data, A-E, consisting of infrared and 'H and 13C NMR spectra. You may find it helpful to draw or redraw them showing the hydrogens explicitly, and/or to determine the number of types of H's and C's. On the page of each data set, draw the structure of the corresponding molecule with the data, and indicate, for each spectrum, what about those data is important in determining that the correct molecule has been chosen. In the case of the IR spectrum, cite absorbance bands that are present (or absent). For the 13C NMR spectrum and 'H NMR spectrum describe how the number of signals and their chemical shifts fit the structure chosen. For the 'H spectrum, also do the same with the data from integration of the signals and their multiplicity. Structures of the four alcohols and three ethers: OH TOH to OH Дон
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