preface to fifteenth edition

7.56 SECTION 7
TABLE 7.24
Absorption Frequencies of Other Double Bonds (Continued)
Group Band,cm 1 Remarks
Nitro compounds N"O (continued)
Nitro C9NO 2 (continued)
Aromatic
,-Unsaturated
Nitroalkenes
1570–1485 (s)
See above remark; also bulky
1380–1320 (s)
orthosubstituents shift band to
higher frequencies. Strong H
bonding shifts frequency to lower
end of range.
865–835 (s) Strong and sometimes at ca 750
cm 1
580–520 (var)
1530–1510 (s)
1360–1335 (s)
Nitrates 9O9NO 2 1650–1625 (vs)
1285–1275 (vs)
870–855 (vs)
760–755 (w–m)
710–695 (w–m)
Nitramines
N9NO 2
1630–1550 (s)
1300–1250 (s)
Nitrates 9O9N"O 1680–1610 (vs) Two bands
815–750 (s) Trans form
850–810 (s) Cis form
690–615 (s)
Thionitrites 9S9N"O 730–685 (m–s)
Nitroso
C9N"O
1600–1500 (s)
N9 N"
O
Aliphatic
Aromatic
1530–1495 (m–s)
1480–1450 (m–s)
1335–1315 (m–s)
Nitrogen oxides
Pyridine
N:O
1320–1230 (m–s)
1190–1150 (m–s)
Pyrazine 1380–1280 (m–s) Affected by ring substituents
1040–990 (m–s)
ca 850 (m)