Physical Chemistry , 1st ed.

505

2

Wavenumber (cm Wavelength (mu)

^1

)

16

4000

4000

650

700

800

900

1000

1500

2000

2500

3456789101112131415

M

M

M

M

M

M MM M M

(Conj.)

Alkane groups

MethylMethylene

Alkene Alkyne Aromatic

(Sharp)

2 M^2

M

M M

M

M

M W

M M

M

S

S

S

S

S

S S

S S S S

S S S S

W

WW

M

MS S

S

S

S S S S S

S

S

S

S

S

S S S

SS

S

S

S S

S S S

W

W

M

M M M

S

M S

M M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

M

W W W

W W

W

WW

W

W W

W

W

W

W

W

CH

3

CH

3

C (C O)

CH

2

CH

2

CH

2

CH

EthylN

Propyl

IsoTertiary butyl

Propyl

(C O),

(C N)

CH

CH

2

H

H

H

Vinyl

C

(trans)

C (cis)

CC

H

CCH

2

CCHCC

H

CCMono subst. benzeneOrtho disubst.MetaParaVicinal trisubst.Unsym.Sym. Naphthalenes Naphthalenes

CH

2

CH

2

CH

2

CH

2

Figure 14.34

A correlation table for assigning infrared spectra. Tables like this are useful in

trying to identify molecules from their vibrational spectrum.

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2011

Cengage

Learning.

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