Stability and DFT Calculated Structure of Protonated Tetraethyl p-tert-Butyltetrathiacalix[4]arenetetraacetate in the cone Conformation

摘要

From extraction experiments in the two-phase water-nitrobenzene system and gamma-activity measurements,the stability constant of protonated tetraethyl p-tert-butyltetrathia-calix[4]arenetetraacetate (cone) in nitrobenzene saturated with water was determined.Three different structures of the resulting complex species were indicated by means of the DFT calculations.