Collect. Czech. Chem. Commun. 1986, 51, 2433-2436

Effect of dielectric constant on the rate of electron spin exchange of Fremy's salt in solution

Hamza A. Hussain and Waleed A. A. Kuder

Chemistry Department, College of Science, University of Baghdad, Jadiria, Baghdad, Iraq


The rate of electron spin exchange in aqueous solution of potassium nitrosodisulphonate K2(SO3)2NO, has been investigated by ESR and found to depend on the dielectric constant of the medium. This observation lead to the calculation of the collision diameter 2 nm which corresponds to bimolecular collisions between species carrying two nagative charges.