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19 Cards in this Set

  • Front
  • Back
O-H
Wavenumber?
3400
N-H

Wavenumber?
3400
C-H

Wavenumber?
3000
CN

Wavenumber?
2250
C triple bond C

Wavenumber?
2150
C=O

Wavenumber?
1775
C-O

Wavenumber?
1100
C=C

Wavenumber?
1650
What is the relationship b/w wavenumber and enegry?
proprtionate
E = hv
Endo DB:
relationship b/w ring size and frequency
inc ring size (up to 60 degree angle)
inc frequency, inc K
Effect to f when adding alkyl groups to endo db?
freq inc
EXO DB
relationship b/w ring size and frequency
inc ring size
dec frequency
4000-2500 cm-1
what functional groups?
O-H
N-H
C-H
2500-2000
what functional groups?
CtriplebondC
CN (triple)
X=C=Y
(C,O, N,S)
1800-1650
what functional group?
C=O
1650-1550
what functional groups?
C=N
C=C
at 1550
what functional group?
N=O
1550-650
what functional groups?
fingerprint region
C-Cl
C-O
C-N
C-C
What makes a molecule IR active?
it must have a DIPOLE moment
usually b/c of asymmetry