Page 203 - Academic Press Encyclopedia of Physical Science and Technology 3rd Analytical Chemistry

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Encyclopedia of Physical Science and Technology EN007C-340 July 10, 2001 14:45

814 Infrared Spectroscopy

TABLE IV (continued)
)
Group a Wave number region (cm −1 b Assignment c
Conjugated esters 1735–1715 s C O str.
Lactone (γ ) 1795–1740 s C O str.
COOH (dimer) 1720–1680 s C O str.
−
CO Na + 1650–1540 s Out-of-phase str.
2
−
CO Na + 1450–1360 m In-phase str.
2
R CO N 1690–1630 s C O str.
O CO N 1740–1683 s C O str.
R CO CI 1810–1795 s C O str.
Anhydride (noncyclic) 1825–1770 s In-phase C O str.
Anhydride (noncyclic) 1755–1715 ms Out-of-phase str.
Anhydride (cyclic) 1870–1845 m In-phase C O str.
Anhydride (cyclic) 1800–1750 s Out-of-phase str.
Carbonyl substituents
CH 2 C O 1440–1405 m CH 2 def.
CH 3 C O 1375–1350 ms CH 3 in-phase def.
H CO R 2900–2800 w CH str. f
H CO R 2775–2695 w CH str. f
H CO R 1420–1370 w CH def.
CO O R 1300–1150 s C O str.
CO OH (dimer) 3000 broad m OH str.
CO OH 1315–1280 s C O str.
CO NH 2 3520–3180 s NH 2 str. (two bands)
CO NH 2 1635–1600 m NH 2 def.
CO NH (noncyclic) 3470–3250 m NH str.
CO NH (noncyclic) 1550–1510 m NH def. + C N stretch
Alcohols and ethers
C OH (unbonded) 3641–3593 w OH str.
C OH (H-bonded) 3500–3000 s OH str.
CH 2 OH 1075–1000 s C O str.
R 2 CH OH 1150–1075 m C O str.
R 3 C OH 1210–1100 m C O str.
Aryl OH 1260–1180 s C O str.
CH 2 O CH 2 1140–1085 s C O C out-of-phase str.
Aryl O CH 2 1310–1210 s Aryl O str.
Aryl O CH 2 1050–1010 m O CH 2 str.
Nitrogen groups
NH 2 3550–3330 mw NH 2 out-of-phase str.
NH 2 3450–3250 mm NH 2 in-phase str.
NH 2 1650–1590 mw NH 2 def.
CH 2 NH CH 2 1146–1132 m C N C out-of-phase str.
Aryl N 1330–1260 m Aryl N str.
C N 1690–1630 m C N str.
CH 2 NO 2 1556–1545 s NO 2 out-of-phase str.
1388–1368 m NO 2 in-phase str.
CH 2 NO 2
Aryl NO 2 1530–1500 s NO 2 out-of-phase str.
Aryl NO 2 1370–1330 w NO 2 in-phase str.
Chlorine
C CI 830–560 m C CI str.
C CH 2 CH 2 CI (trans) 730–723 m C CI str.
continues