Untersuchungen an molekülkomplexen von n-σ-TYP MITT. I. über freie enthalpie—kraftkonstantenkorrelationen von molekülkomplexen des jods m

Linear correlations have been found between the ΔG⁰ values of the molecular complexes R₁R₂R₃PO/I₂, R₁R₂SO/I₂ and R₁R₂SeO/I₂ and the PO, SO and SeO valence force constants, respectively. The nature of the correlation is determined by the ZO donor bond and not by the donor atom, where Z is P, S or Se. The change on ΔG⁰ values for an equal change in the ZO valence force constants increases in the order R₁R₂SO/I₂?R₁R₂R₃PO/I₂ < R₁ R₂SeO/I₂. Seleninyl complexes with I₂ are more stable than the analogous thionyl complexes. From ΔG⁰—f_zo correlation deductions can be made about the nature of the ZO donor bond and ΔG⁰ values can be evaluated from vibrational spectra. A linear correlation exists between the ΔG⁰ values of corresponding thionyl and seleninyl complexes which is of the same form as the correlation between the valence force constants of analogous thionyl and seleninyl compounds.