Title : Discovery and Development of Pyridine-bis(imine) and Related Catalysts for Olefin Polymerization and Oligomerization.

Pub. Date : 2015 Sep 15

PMID : 26267011






5 Functional Relationships(s)
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1 Of primary importance are the pyridine-bis(imine) ligands (herein referred to as PDI), which produced iron catalysts that are among the world"s most active for ethylene polymerization, demonstrated "staying power" despite over 15 years of ligand improvement efforts, and generated highly active polymerization systems with cobalt, chromium, and vanadium. Iron peptidyl arginine deiminase 1 Homo sapiens
2 Although many ligands have been employed in iron-catalyzed polymerization, the PDI family has thus far provided the most information about iron"s capabilities and tendencies. Iron peptidyl arginine deiminase 1 Homo sapiens
3 Although many ligands have been employed in iron-catalyzed polymerization, the PDI family has thus far provided the most information about iron"s capabilities and tendencies. Iron peptidyl arginine deiminase 1 Homo sapiens
4 Iron PDI polymerizes propylene with 2,1-regiochemistry via a predominantly isotactic, chain end control mechanism. Iron peptidyl arginine deiminase 1 Homo sapiens
5 Because the first insertion proceeds via 1,2-regiochemistry, iron (and cobalt) PDI systems can be tailored to make highly linear dimers of alpha-olefins by "head-to-head" coupling, resulting from a switch in regiochemistry after the first insertion. Iron peptidyl arginine deiminase 1 Homo sapiens