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Correlation of Metal Spin State with Catalytic Reactivity: Polymerizations Mediated by α‐Diimine–Iron Complexes
Author(s) -
Shaver Michael P.,
Allan Laura E. N.,
Rzepa Henry S.,
Gibson Ver C.
Publication year - 2006
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.200502985
Subject(s) - diimine , catalysis , polymerization , styrene , reactivity (psychology) , metal , spin states , polymer chemistry , chemistry , photochemistry , atom transfer radical polymerization , atom (system on chip) , oxidation state , computer science , organic chemistry , copolymer , polymer , inorganic chemistry , medicine , alternative medicine , pathology , embedded system
The mechanism of styrene polymerization by α‐diimine iron complexes correlates with the metal spin state of the catalyst. Experimental and theoretical studies indicate that high‐spin catalysts are halogenophilic, resulting in atom transfer radical polymerization (ATRP), while intermediate‐spin complexes are carbophilic giving rise to catalytic chain transfer (CCT, see graph).