Enhancing SIM behaviour in a mononuclear tetrahedral [Co( N , N '-2-iminopyrrolyl) 2 ] complex.
Patrícia S FerreiraJosé F MaltaNuno A G BandeiraAlexander AllgaierJoris van SlagerenJosé A PaixãoManuel AlmeidaLaura C J PereiraPedro T GomesPublished in: Chemical communications (Cambridge, England) (2022)
A new homoleptic Co(II) complex bearing two highly sterically congested 2-formiminopyrrolyl N , N '-chelating ligands is reported, displaying slow relaxation of the magnetisation at zero static (DC) field. This compound shows a large value for the zero-field splitting (ZFS) parameter D of -42.6(4) cm -1 leading to a spin-reversal energy barrier U eff of 85 cm -1 .