APPENDIX C: Standard Bond Lengths

A5

Bond

   Structure

Length (Å)

C—H

R2CH2

1.07

 

Aromatic

1.08

 

RCH3

1.10

C—C

Hydrocarbon

1.54

 

Aromatic

1.40

C=H

Ethylene

1.33

C≡C

Acetylene

1.20

C—N

RNH2

1.47

 

O=C—N

1.34

C=O

Alcohol

1.43

 

Ester

1.36

C—O

Aldehyde

1.22

 

Amide

1.24

C—S

R2S

1.82

N—H

Amide

0.99

O—H

Alcohol

0.97

O—O

O2

1.21

P—O

Ester

1.56

S—H

Thiol

1.33

S—S

Disulfide

2.05