Organic Chemistry Semester 1 LABORATORY MANUAL - Moravian ...

More documents

Recommendations

Info

Nuclear Magnetic Resonance Appendix E8 Part V. Techniques and Theory Figure 3: High resolution 1 H-NMR Spectra (Continued) (7.) Compound Cl Cl H Relative Areas 1 Spectrum 2 Cl C C C Cl H Cl H (8.) Cl Cl Cl Cl C C C Cl Cl H H (9.) Cl Cl H Cl C C C Cl Cl H H
Part V. Techniques and Theory Appendix E9 Nuclear Magnetic Resonance 2. Invention; a. Note that the spectra of compounds (1.), (3.), (5.), & (6.) consist of single unsplit peaks, while those of compounds (2.) & (4.) consist of 2 sets of multiple peaks. What does comparison of these two groups of spectra suggest about a structural requirement for spitting (presence of multiple maxima) b. Note also, that while the spectra of compounds (2.), (4.), (8.) & (9.) contain multiple maxima, the spectrum of compound (7.) does not. What additional structural requirement for splitting is suggested by these comparisons c. Use your conclusions from (1.) and (2.) to develop a method for predicting the number of peaks produced in each “split” peak from the structure of the compound. 3. Application: Using your conclusions in 2., predict the splitting patterns of the peaks in the 1 H-NMR spectra of the following compounds. Note that you predicted the number of peaks and relative areas of peaks for these compounds in the Applications on E3 & E5. Explain how your predictions were determined. Cl a. b. c. d. Cl Cl Cl Characteristics of Spin-Spin Coupling (Splitting). Note: That in Figure 3 (E6-E8), Cpds. (2.), (4.), (8.) & (9.), both sets of "coupled" protons are split by the same amount (# of Hz = J AX the coupling constant).
Page 1:
MORAVIAN COLLEGE CHEMISTRY DEPARTME
Page 4 and 5:
Table of Contents (continued) 2 PAR
Page 6 and 7:
I. Introduction 4 Fall 2010 Assignm
Page 8 and 9:
I. Introduction 6 Fall 2010 Assignm
Page 10 and 11:
Part I. Introduction 8 Fall 2010 La
Page 12 and 13:
Part I. Introduction 10 Fall 2010 D
Page 14 and 15:
Part II. Lab Rules and Regulations
Page 16 and 17:
Part II. Lab Rules and Regulations
Page 18 and 19:
III Laboratory Records & Report For
Page 20 and 21: III Laboratory Records & Report For
Page 22 and 23: III Laboratory Records & Report For
Page 24 and 25: Part V. Experiments 22 Fall 2010 Pa
Page 26 and 27: Part V. Experiments 24 Fall 2010 Ex
Page 28 and 29: Part V. Experiments 26 Fall 2010 H
Page 30 and 31: Part V. Experiments 28 Fall 2010 E.
Page 32 and 33: Part V. Experiments 30 Fall 2010 E.
Page 40 and 41: Part V. Experiments 38 Fall 2010
Page 42 and 43: Part V. Experiments 40 Fall 2010 1
Page 45 and 46: Part V. Techniques and Theory Appen
Page 57 and 58: c Part V. Techniques and Theory App
Page 61: Part V. Techniques and Theory Appen
Page 64 and 65: Nuclear Magnetic Resonance Appendix
Page 84: Nuclear Magnetic Resonance Appendix
show all

Organic Chemistry Semester 1 LABORATORY MANUAL - Moravian ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?