Mixed-magnesium/zinc calix[4]arene complexes: structure, and ring opening polymerisation studies†,10.1039/D3CC04899C

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Mixed-magnesium/zinc calix[4]arene complexes: structure, and ring opening polymerisation studies†

Henry J. S. Banks,Josef W. A. Frese,Mark R. J. Elsegood,Carl Redshaw

Chemical Communications Pub Date : 12/01/2023 00:00:00 , DOI:10.1039/D3CC04899C

Abstract

Different combinations of organomagnesium reagents and zinc bromide react with either 1,3-dimethoxy-4-tert-butylcalix[4]areneH₂ (L(OMe)₂H₂) or trialkoxycalix[4]arenes (L(OR)₃H) (R = n-Pr, n-pentyl) to afford mixed-metal calix[4]arene systems. Intriguing molecular structures are formed and the systems are capable of the ring opening polymerisation of ε-caprolactone under N₂, air, or as melts.