A large axial magnetic anisotropy in trigonal bipyramidal Fe(ii)†
Abstract
The first trigonal bipyramidal Fe(II) complex to display slow relaxation of magnetisation has been isolated, with this behaviour found to arise through a combination of a large magnetic anisotropy (D = −27.5 cm−1) and a pseudo-D3h symmetry at the Fe(II) centre, as investigated through ab initio and magnetic studies.