FTIR Spectrum

FTIR spectrum, please contact me at zhangx@umd.edu or cyferzhang@gmail.com for any mistakes or discussion.

Table 1. FTIR spectrum information and bond relationship.

Bond type	Position high limit (cm^-1)	Position low limit (cm^-1)	Intensity	Sharpness	Reference
Si-O-Si	1090	1030	strong		4
Si-OH	900	810			4
C-Br	600	500			3
C-Cl	800	600			3
C-I	500	500			3
≡CH	3340	3280			2
=CH	3100	3000			2
C-C
C-O	1260	1000	strong		1
S-O in R-(S=O)-OH	870	810			4
S-O in -O-(S=O)-O-	740	720			4
S-O in -O-(S=O)-O-	710	690			4
C-S	730	570			4
SO₂	1200	1110			4
C=S	1080	1050			4
C-O-C	1275	1010			2
CH3	2880	2860			2
CH2	2940	2920			2
CH2	2860	2840			2
NO2 asymmetrical stretch	1660	1500	strong		1
NO2 symmetrical stretch	1390	1260	strong		1
C-CH3	3000	2550			2
N-CH3 aromatic	2820	2810			2
N-CH3 aliphatic	2805	2780			2
SO2	1415	1290			4
C=C	1680	1620			2
-CH=CH- cis	750	650			2
-CH=CH- trans	970	960			2
-CH=CH2	915	905			2
-CH=CH2	995	985			2
CH	2900	2880			2
C=O	1760	1670	strong		1
C=C conjugate	1625	1585			2
C≡C terminal	2140	2100			2
C-C≡C-C	2260	2190			2
C-C≡C-C≡CH	2200	2040			2
C=N	2260	2220			1
SH	2600	2550			2
OH in carboxylic acid	3000	2500		broad	1
C-H alkane stretch	2960	2850	strong		1
C-H alkane scissoring and bending	1470	1350			1
C-H alkene stretch	3080	3020	medium		1
C-H alkene bend	1000	675	strong		1
C-H aromatic ring	3100	3000	medium		1
C-H alkyne stretch	3333	3267	strong		1
C-H bend	700	610		broad	2
≡CH stretch	3340	3280			2
=CH	3100	3000			2
OH with intramolecular hydrogen bond	3600	3450		sharp	2
OH with intermolecular hydrogen bond	3550	3200		broad	1, 2
NH stretch	3500	3300	medium		1
NH bend	1650	1580	medium		1
OH	3640	3160	strong	broad	1