A comparative study on nido- and closo-carborane supported zinc-salen catalysts for the ROCOP of epoxides and anhydrides†
Abstract
Nido- and closo-carborane supported Zn–salen complexes (2–4) were prepared. The nido-C2B9 carborane anion supported Zn–salen complexes are superior to the closo-carborane supported ones in ROCOP of epoxides and anhydrides. These findings show the importance of electronic effects in the backbone of the salen ligands and offer guidance for future catalyst design.