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Two‐Coordinate Fe 0 and Co 0 Complexes Supported by Cyclic (alkyl)(amino)carbenes
Author(s) -
Ung Gaël,
Rittle Jonathan,
Soleilhavoup Michele,
Bertrand Guy,
Peters Jonas C.
Publication year - 2014
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.201404078
Subject(s) - carbene , steric effects , cationic polymerization , chemistry , alkyl , stereochemistry , medicinal chemistry , transition metal , catalysis , polymer chemistry , organic chemistry
The CAAC [CAAC=cyclic (alkyl)(amino)carbene] family of carbene ligands have shown promise in stabilizing unusually low‐coordination number transition‐metal complexes in low formal oxidation states. Here we extend this narrative by demonstrating their utility in affording access to the first examples of two‐coordinate formal Fe 0 and Co 0 [(CAAC) 2 M] complexes, prepared by reduction of their corresponding two‐coordinate cationic Fe I and Co I precursors. The stability of these species arises from the strong σ‐donating and π‐accepting properties of the supporting CAAC ligands, in addition to steric protection.