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Probing Metal Complexation, Structure, Ligand Lability and Dissociative Ligand‐Exchange Mechanism in the Slipped Triple‐Decker Complexes [{( η 5 ‐Cp R )Co} 2 ‐ μ ‐{ η 4 : η 4 ‐arene}] (R=Me 5 , 1,2,4‐tri‐ tert‐ butyl; arene=toluene, benzene)
Author(s) -
Schneider Jörg J.,
Wolf Dirk,
Janiak Christoph,
Heinemann Oliver,
Rust Jörg,
Krüger Carl
Publication year - 1998
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/(sici)1521-3765(19981002)4:10<1982::aid-chem1982>3.0.co;2-p
Subject(s) - lability , chemistry , ligand (biochemistry) , bridging ligand , dissociative , metal , stereochemistry , medicinal chemistry , organic chemistry , biochemistry , receptor , medicine , pharmacology
Triple‐deckers 1 and 3 are extremely labile with respect to an exchange of their bridging arene middle deck. Crossover exchange experiments between 1 , 3 , benzene, and azulene have unraveled for the first time a dissociative mechanism for ligand exchange in organometallic triple‐decker complexes. Further preparative utility of this high exchange lability can be foreseen and is herein exemplified by the synthesis of a new class of structurally characterized dinuclear Co complexes containing bridging azulenes.