Single-site catalysis by bimetallic zinc calixarene inclusion complexes.
[reaction: see text] Bimetallic alkylzinc calixarene inclusion complexes were prepared and used in the ring-opening polymerization of L-lactide. Polymers with high molecular weight and a low degree of polydispersity were obtained. 1H NMR and diffusion NMR experiments suggest that a single-site mechanism is operative.
Bukhaltsev
Ella
E
School of Chemistry, The Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel.
Frish
Limor
L
Cohen
Yoram
Y
Vigalok
Arkadi
A