Collect. Czech. Chem. Commun. 1997, 62, 849-854

Instability of Solutions of Quaternary Ammonium Permanganates in Dichloromethane

Vladislav Holba and Renata Košická

Department of Physical Chemistry, Faculty of Science, Comenius University, 842 15 Bratislava, Slovak Republic


The paper deals with instability of solutions of quaternary ammonium permanganates, QMnO4 (Q = tetraethyl-, tetra-1-propyl-, tetra-1-butyl-, tetra-1-pentyl-, tetra-1-octyl-, and cetyltrimethylammonium), in dichloromethane and presents the rate constants and activation parameters of the reduction of permanganate. Attention was paid to the properties of colloidal Mn(IV) intermediate. The stability of the solutions depends markedly on the quaternary ammonium salt used.

Keywords: Solubilized permanganate; Mn(IV) colloidal intermediate; Light scattering.