A study on the transport behaviour of tetraphenylarsonium, tetraphenylphosphonium and some common ions in propylene carbonate from viscosity and conductance data

Abstract

Viscosity measurements for solutions of tetraphenylarsonium chloride (Ph₄AsCl); tetraphenylphosphonium bromide (Ph₄PBr) and sodium tetraphenylborate (NaBPh₄.) in propylene carbonate (PC) are reported at 25, 35 and 45°C. Electrical conductances of these salts and that of tetrabutylammonium tetraphenylborate (Bu₄NBPh₄.) have also been measured at 25°C. Viscosity data have been analysed by means of Jones-Dole equation and B coefficients evaluated. Conductance data have been analysed by 1978 Fuoss conductance equation in terms of equivalent conductance (Λ₀), association constant (<i>K</i>_A)and association distance (R). Limiting ionic values have been determined using the 'reference electrolytes' Bu₄NBBu₄ and Bu₄NBPh_4. Stokes radii have also been evaluated and the study indicates that Na⁺ and Cl^-are substantially solvated while other ions are scarcely solvated and remain as free ions in this medium.