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CARBONYL GROUPS
HETEROATOMS
HYDROCARBONS
MORE GROUPS
IR SPECTRA
100

(R-CHO)

Aldehyde

100

Found in alcohols, ethers, and carbonyls

Oxygen

100

carbon-carbon double bond

Alkene

100

C-OH

alcohol

100

>3100 WAVENUMBER

O-H OR N-H STRETCHES

200

(R-CO-R)

Ketone

200

Found in thiols

Sulfur 

200

carbon-carbon triple bond

Alkyne

200

C-SH

Thiol

200

1700-1800 WAVENUMBER

CARBONYL (C=O STRETCHES)

300

(R-COOH)

Carboxylic acid

300

Found in amine and amides

Nitrogen

300

Cyclic ring of single or double carbon bonds

Arene

300

C-S

Sulfide

300

2900-3000 WAVENUMBER

SP3 HYBRID C-H STRETCHES

400

(R-COOR)

Ester

400

Halogen with atomic number 9

Flourine

400

carbon- carbon single bond

Alkane

400

X-C

Alkyl Halide

400

500-1500 WAVENUMBER

FINGERPRINT REGION

500

(R-NH2)

Amine

500

Are heteroatoms water soluble 

Yes

500

True or false: This group are all sp2 hybrids

False. Alkane is sp3 hybrid

500

C-O-C

ETHER

500

1600-1700 WAVENUMBER

ALKENE
(C=C STRETCHES)