From June 2nd to 5th 1980, the Vth International Symposium on Solute-Solute-Solvent Interactions was held in Florence, Italy. Owing to the large range of interests included in the program and to their interdisciplinary nature, a number of microsymposia on specific subjects were organized, in addition to plenary lectures, session lectures and poster sessions. The abstracts of the Confer ence were published in Inorganica Chimica Acta as a special publi cation and as an appendix to the issue of June 1980. The plenary lectures have been published, as customary, in the Journal of Pure and Applied...