756874-57-4Relevant academic research and scientific papers
FI catalysts: A molecular zeolite for olefin polymerization
Makio, Haruyuki,Ochiai, Takashi,Tanaka, Hidetsugu,Fujita, Terunori
, p. 1635 - 1640 (2010)
A bis(phenoxyimine) group 4 transition metal catalyst (now known as FI catalysts) can discern ethylene from a mixture of ethylene and propylene at more than 99% selectivity. Denisty function theory (DFT) calculations revealed a spatially confined reaction site in the transition states of the migratory insertion which is just the right size for an ethylene molecule but too small for a propylene one. The substituents adjacent to the phenoxy-oxygens are of crucial importance in developing the size/shape-selectivity.
