preface to fifteenth edition

SPECTROSCOPY 7.75
TABLE 7.30
Raman Frequencies of Single Bonds to Hydrogen and Carbon (Continued)
Amides
Primary
Group Band, cm 1 Remarks
N9H and C9N Bonds (continued)
3540–3500 (w)
3400–3380 (w)
1310–1250 (s)
Both bands lowered ca 150 cm 1
in solid state and H bonding
Interaction of NH bending and
CN stretching; lowered 50 cm 1
in nonbonded state
1150–1095 (m) Rocking of NH 2
Secondary 3491–3404 (m–s) Two bands; lowered in frequency
on H bonding and in solid state
1190–1130 (m)
931–865 (m–s)
430–395 (w–m)
9CO9N 607–555 (m) O"CN bending
C9N9C
9
C
1070–1045 (m) Stretching
C9N
Primary carbon
Secondary carbon
1090–1060 (m)
1140–1035 (m)
CN stretching
Two bands but often obscured.
Strong band at 800 cm 1
Tertiary carbon 1240–1020 (m) Two bands. Strong band also at
745 cm 1