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Mild and Complete Carbonyl Ligand Scission on a Mononuclear Transition Metal Complex
Author(s) -
Braunschweig Holger,
Celik Mehmet Ali,
Dewhurst Rian D.,
Kachel Stephanie,
Wennemann Benedikt
Publication year - 2016
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.201600307
Subject(s) - chemistry , bond cleavage , intramolecular force , ligand (biochemistry) , carbene , transition metal , bimetallic strip , lewis acids and bases , photochemistry , polymer chemistry , carbon monoxide , sigma bond , metal , medicinal chemistry , stereochemistry , covalent bond , organic chemistry , catalysis , biochemistry , receptor
The complete scission of the carbon–oxygen bond of carbon monoxide, while frequently observed on bulk metals and with bimetallic and cluster transition metal complexes, is unknown with monometallic systems. Reaction of a zerovalent iron bis(borylene) complex with a cyclic (alkyl)(amino)carbene revealed a highly selective intramolecular cleavage of the C−O bond of a carbonyl ligand at room temperature, leading to the formation of a highly unusual iron complex containing a base‐stabilized (bora)alkylideneborane ligand. DFT investigation of the reaction mechanism suggested that the two Lewis acidic borylene boron atoms cooperate to cleave the C−O multiple bond.