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First Examples of a New Family of Redox‐Functionalised Chelate Complexes Based on a 1,1′‐Ferrocenediyl‐Bridged Di(amido) Ligand
Author(s) -
Siemeling Ulrich,
Kuhnert Oliver,
Neumann Beate,
Stammler Anja,
Stammler HansGeorg,
Bildstein Benno,
Malaun Michael,
Zanello Piero
Publication year - 2001
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/1099-0682(200104)2001:4<913::aid-ejic913>3.0.co;2-z
Subject(s) - chemistry , chelation , benzene , redox , acetonitrile , hexafluorophosphate , ethylene , ligand (biochemistry) , medicinal chemistry , polymer chemistry , inorganic chemistry , catalysis , organic chemistry , receptor , biochemistry , ionic liquid
Treatment of Fe[(C 5 H 4 )NHPh] 2 ( 1 H 2 ) with M(NMe 2 ) 4 ( 3a : M = Ti, 3b : M = Zr) in benzene afforded the chelates ( 1 )Ti(NMe 2 ) 2 ( 4 ) and ( 1 )Zr(NMe 2 ) 2 (HNMe 2 ) ( 5 ), respectively. Chelate 5 was cleanly oxidised by ferrocenium hexafluorophosphate in acetonitrile. Treatment of 5 with two equivalents of [Me 2 NH 2 ]Cl ( 6 ) in benzene afforded ( 1 )ZrCl 2 (HNMe 2 ) ( 7 ). The chelates 5 and 7 were characterised by X‐ray structure analyses. The new redox‐active chelate complexes are precatalysts for the polymerisation of ethylene.