Effect of Concentration on Isomerization of Rhodanine Derivatives of Merocyanine Dyes in Polar Solvents

<table>Four possible isomers of<b> 2</b> (R=H) and<b> 2a</b> (R=C<sub>2</sub>H<sub>5</sub>).</table>

Advances in Physical Chemistry

Scheme 2: Effect of Concentration on Isomerization of Rhodanine Derivatives of Merocyanine Dyes in Polar Solvents 