Structure and bonding in three-coordinate N-heterocyclic carbene adducts of iron(II) bis(trimethylsilyl)amide

Structure and bonding in three-coordinate N-heterocyclic carbene adducts of iron(II) bis(trimethylsilyl)amide:

Chem. Commun., 2011, DOI: 10.1039/C1CC14576B

Richard A. Layfield, Joseph J. W. McDouall, Manfred Scheer, Christoph Schwarzmaier, Floriana Tuna
The three-coordinate NHC iron(II) complexes [(NHC)Fe{N(SiMe₃)₂}₂] (NHC = IProrIMes) are stable in the solid-state but dissociate their NHC ligands in solution due to steric overcrowding.