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Observation of Intramolecular CH⋅⋅⋅FC Contacts in Non‐Metallocene Polyolefin Catalysts: Model for Weak Attractive Interactions between Polymer Chain and Noninnocent Ligand
Author(s) -
Kui Steven C. F.,
Zhu Nianyong,
Chan Michael C. W.
Publication year - 2003
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200219832
Subject(s) - polyolefin , metallocene , intramolecular force , polymer , catalysis , ligand (biochemistry) , materials science , polymer chemistry , polymer science , chemical engineering , chemistry , polymerization , composite material , organic chemistry , engineering , receptor , biochemistry , layer (electronics)
Attracting attention! The existence of attractive interactions between a functionalized ancillary ligand and a growing alkyl chain is a highly novel concept in olefin polymerization reactions (see scheme). Such interactions must be very weak so that the chain‐propagation process is not perturbed, and “controversial” hydrogen bonds with strong dispersive character, such as CH⋅⋅⋅FC, are therefore ideal in this role (see scheme).