Antipin I.; Solovieva S.; Stoikov I.; Vershinina I.; Pribylova G.; Tananaev I.; Myasoedov B.
(2004)
Tetrasubstituted on the lower rim calix[4]arenes, containing carbonyl and ester groups, and existing in a cone conformation are selective and efficient extracting agents for TcVII extraction from both acidic and basic solutions.