( do 9 b 9. (a) Substitution of an amino group at thepara-position of autophenone shifts theC=0 frequency from 1685 cm¯ to-11652 cm-1;whereasnitrogroupaattached at that position yields theC=0 frequency to appear at 1693 cm-.Explain the shifts.(b) Why does a ß-diketone appear as two-1broadbands at1640 cm--1580 cmand at 3100 cm¯'-2700 cm-?(c)Discuss the effect of ring strain on thecrabonyl stretching for cyclic ketones.(c)How can you distinguish the followingcompounds by IR spectroscopy?(i)CH2-CH3 and-CH2--CH3(üi) H3C-Ĉ–CH3 and H3C–Ĉ–CH2--CH3(d) What is overtone?

Answered: Image /qna-images/answer/64376f5e-556a-4f4e-9deb-83d07126ba27.jpg

9. (a) Substitution of an amino group at the para-position of autophenone shifts the C=0 frequency from 1685 cm¯ to 1652 cm-; 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 1640 cm--1580 cm -1 broadbands at and at 3100 cm¬1-2700 cm¬l? (c) Discuss the effect of ring strain on the crabonyl stretching for cyclic ketones.

9. (a) Substitution of an amino group at the para-position of autophenone shifts the C=0 frequency from 1685 cm¯ to 1652 cm-; 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 1640 cm--1580 cm -1 broadbands at and at 3100 cm¬1-2700 cm¬l? (c) Discuss the effect of ring strain on the crabonyl stretching for cyclic ketones.

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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