IR spectrum Flashcards by Dwayne Townsend | Brainscape

Q

single bonds (except X-H groups)

A

below 1500

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Q

double bonds

A

1600-1850

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Q

alkyne

A

2100-2300

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Q

hydroxyl

A

3200-3650

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Q

benzene

A

3030

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Q

carbonyl

A

1630-1780

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Q

aldehyde

A

1680-1750

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Q

ketone

A

1735-1750

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Q

carboxylic acid

A

1710 -1780

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Q

amide

A

1630 - 1690

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Q

amine

A

3300-3500

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Q

nitriles

A

2220 -2260

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Q

diagnostic region

A

1800 and above

all double and triple bonds and X-H

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Q

fingerprint

A

1500 and below

except X-H bonds

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Q

alkyl

A

no signal left of 3100

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Q

Alkene

A

3100

Q

Alkyne

A

3300

Q

What affects the intensity

A

dipole moment

higher dipole stronger signal

Q

What affects the shape

A

Hydrogen bonding

more hydrogen bonding broader the signal