Mixed-metal calix[8]arene complexes: structure, and ring opening polymerisation studies

Abstract

Reactions of différent combinations of group V alkoxides or tungsten oxyalkoxide salts with p-tert-butylcalix[8]areneH8 (L8H8) affords mixed-metal calix[8]arene systems. Intruiging molecular structures are formed and the systems are capable of the ring opening polymerisation of ϵ-caprolactone under N2, air, or as melts affording mostly low molecular weight products.