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Molecules

H2

HF

HCl

HBr

HI

F2

Cl2

Br2

I2

N2

O2

CO2

H2O

ONF

NH3

HCN

ICN

OCS

CH2O

HCO2H

CH4

Cl2O

CH2Cl2
with details

C2H2

C2H4

cis-C2H2Cl2

trans-C2H2Cl2

C6H6

Other

Glossary

Formaldehyde, CH2O (C2v)

C-H symmetric stretching
(a1)
3121 cm-1
(IR intensity = 0.0052)
(Raman active)

C-H asymmetric stretching
(b2)
3085 cm-1
(IR intensity = 0.092)
(Raman active)

C-O stretching
(a1)
2053 cm-1
(IR intensity = 1.0)
(Raman active)


H-C-H in-plane scissoring
(a1)
1444 cm-1
(IR intensity = 0.041)
(Raman active)

H-C-H in-plane rocking
(b2)
1176 cm-1
(IR intensity = 0.27)
(Raman active)

H-C-H out-of-plane wagging
(b1)
1165 cm-1
(IR intensity = 0.028)
(Raman active)