exocyclic double bond

exocyclic double bond

[¦ek·sō¦sī·klik ¦dəb·əl ′bänd]
(organic chemistry)
A double bond that is connected to and external to a ring structure.
References in periodicals archive ?
The rate of diminution on exocyclic double bond, during photolysis, is faster for longer aliphatic chain containing polymers than shorter aliphatic chain containing polymers [25] attributed to folding tendency of methylene units present in the polymer chain.
Photolysis studies of various methylene spacer containing polymers revealed that the rate of photocrosslinking of exocyclic double bonds of the polymers increases in the following order: ethylene < tetramethylene < hexamethylene < octamethylene < decamethylene.