Kinetics of Dimerization of Cyclopentadienone Derivative

Kinetics of Dimerization of Cyclopentadienone Derivative
To study the dimerization kinetics of 2,5-Dimethyl-3,4-diphenylcyclopentadienone using spectrophotometry.


2,5-Dimethyl-3,4-diphenylcyclopentadienone mononer (Orange colour)

2,5-Dimethyl-3,4-diphenylcyclopentadienone is coloured while its dimer is not. The dimerization reaction is monitored by spectrophotometry. A decrease in absorbance in the visible region reflects the increasing concentration of dimer being formed during the course of reaction.


Dissolving 50 mg of dimer in 10 ml of toluene.


Warm the solution (in a fume cupboard) on the steam bath for 15 minutes.


The solution will become strongly coloured by the monomer formed.


Zeroing