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Chemical Functional Groups and Their Spectral Shifts in IR Spectroscopy, Quizzes of Organic Chemistry

Definitions and ir spectral shift ranges for various chemical functional groups, including alkyl, aldehydes, ketones, carboxylic acids, esters, aromatic compounds, and nitro compounds.

Typology: Quizzes

2009/2010

Uploaded on 06/14/2010

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TERM 1
1-1.5
DEFINITION 1
Alkyl
TERM 2
1.75-2.25
DEFINITION 2
alpha to carbonyl O=C-C-H or allylic R2-C=C-C-H
TERM 3
3-4.5
DEFINITION 3
CH-X, X = electron withdrawing
TERM 4
4-6
DEFINITION 4
vinyl C=CH
TERM 5
7.90-8.25
DEFINITION 5
aromatic
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Alkyl

TERM 2

DEFINITION 2

alpha to carbonyl O=C-C-H or allylic R2-C=C-C-H

TERM 3

DEFINITION 3

CH-X, X = electron withdrawing

TERM 4

DEFINITION 4

vinyl C=CH

TERM 5

DEFINITION 5

aromatic

RCHO (aldehyde)

 - 8.5-9. 
  • TERM - 9.5-10. - DEFINITION
  • TERM RCO2H carboxylic acid
    • 3600- - DEFINITION
  • TERM O-H large extremely large is almost always COOH
    • 3300- - DEFINITION
  • TERM C-H sp
    • 3100- - DEFINITION - C-H sp

C-O

TERM 17

3600-3300 two fairly strong spikes

DEFINITION 17

1 degree N-H b/c 2 N-H, N-H OH is a little deeper