An unprecedented zero field neodymium(iii) single-ion magnet based on a phosphonic diamide

Abstract

The axial ligation by the –PO group of a phosphonic diamide in an air-stable Nd(III) complex ensures a pseudo-D_5h symmetry leading to the stabilization of the m_J = |±9/2〉 state; this in turn is responsible for the observed SIM behaviour at zero field and the slow relaxation of magnetization up to 8.0 K.