(Time restraint) What differences in the IR spectra of the reactant and product in each of the following transformations would enable you to tell that each reaction took place? Please give numbers from the IR sheet attatched. Include presence/absences/shifts of all distinguishing peaks. Thank you so much.
(Time restraint) What differences in the IR spectra of the reactant and product in each of the following transformations would enable you to tell that each reaction took place? Please give numbers from the IR sheet attatched. Include presence/absences/shifts of all distinguishing peaks. Thank you so much.
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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(Time restraint) What differences in the IR spectra of the reactant and product in each of the following transformations would enable you to tell that each reaction took place? Please give numbers from the IR sheet attatched. Include presence/absences/shifts of all distinguishing peaks. Thank you so much.
Transcribed Image Text:Functional Group
Frequency (cm!)
Intensity and Comments
Alkanes
С-Н
2980-2850
medium to strong
C-C
1480-1420
medium
Alkenes
medium; very weak for trans
strong
strong
weak to medium
=C-H stretch
3150-3000
980-960 (trans)
730-665 (cis)
—С-Н bend
C=C
1680-1600
Alkynes
=C-H
3350-3300
strong
weak to medium
C=C
2260-2100
Alkyl halides
C-Cl
800-600
strong
strong
C-Br
600-500
C-I
500
strong
Alcohols
strong and broad
strong
O-H
3650-3300
C-O
1350-1050
Amines
N-H
3500-3100
medium and strong; 1° amines-2 bands; 2° amines-1 band
medium
С-N
~1200
Aromatics
C-H stretch
3080-3020
weak to medium
С-H bend
900-730
strong
weak to medium
C=C
1650-1580
Carbonyls (C=O)
Ketones
1730-1700
strong
strong; also has a O=C-H doublet at ~2700 & 2800 cm'
strong; also has C–O stretch
strong; 1° and 2° amides also have N-H stretch
strong; also has O–H stretch
strong; doublet
strong
medium
Aldehydes
1730-1700
Esters
1750-1735
Amides
1680-1630
Acids
1730-1700
Acid Anhydride
1850-1740
Acid Chlorides
1820-1770
Nitrile (C=N)
Nitro (NO2)
2200-2250
Doublet at:
strong
1570-1550 &
1380-1360
Transcribed Image Text:`NHCH3
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