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9. (a) Substitution of an amino group at the para-position of autophenone shifts the C=0 frequency from 1685 cm¯! to 1652 cm-1; whereas nitrogroup a attached at that position yields the -1 C=0 frequency to appear at 1693 cm'. Explain the shifts. (b) Why does a ß-diketone appear as two -1 broadbands at 1640 cm--1580 cm and at 3100 cm¯-2700 cm-l? (c) Discuss the effect of ring strain on the

9. (a) Substitution of an amino group at the para-position of autophenone shifts the C=0 frequency from 1685 cm¯! to 1652 cm-1; whereas nitrogroup a attached at that position yields the -1 C=0 frequency to appear at 1693 cm'. Explain the shifts. (b) Why does a ß-diketone appear as two -1 broadbands at 1640 cm--1580 cm and at 3100 cm¯-2700 cm-l? (c) Discuss the effect of ring strain on the

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
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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9. (a) Substitution of an amino group at the para-position of autophenone shifts the C=0 frequency from 1685 cm¯ to -1 1652 cm-1; whereas nitrogroup a attached at that position yields the C=0 frequency to appear at 1693 cm-. Explain the shifts. (b) Why does a ß-diketone appear as two -1 broadbands at 1640 cm--1580 cm and at 3100 cm¯'-2700 cm-? (c) Discuss the effect of ring strain on the crabonyl stretching for cyclic ketones. (c) How can you distinguish the following compounds by IR spectroscopy? (i) CH2-CH3 and -CH2- -CH3 (üi) H3C- Ĉ–CH3 and H3C–Ĉ–CH2- -CH3 (d) What is overtone?
Transcribed Image Text:9. (a) Substitution of an amino group at the para-position of autophenone shifts the C=0 frequency from 1685 cm¯ to -1 1652 cm-1; whereas nitrogroup a attached at that position yields the C=0 frequency to appear at 1693 cm-. Explain the shifts. (b) Why does a ß-diketone appear as two -1 broadbands at 1640 cm--1580 cm and at 3100 cm¯'-2700 cm-? (c) Discuss the effect of ring strain on the crabonyl stretching for cyclic ketones. (c) How can you distinguish the following compounds by IR spectroscopy? (i) CH2-CH3 and -CH2- -CH3 (üi) H3C- Ĉ–CH3 and H3C–Ĉ–CH2- -CH3 (d) What is overtone?
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