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Angular‐Resolved Magnetometry Beyond Triclinic Crystals: Out‐of‐Equilibrium Studies of Cp*ErCOT Single‐Molecule Magnet
Author(s) -
Boulon MarieEmmanuelle,
Cucinotta Giuseppe,
Liu ShanShan,
Jiang ShangDa,
Ungur Liviu,
Chibotaru Liviu F.,
Gao Song,
Sessoli Roberta
Publication year - 2013
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201302600
Subject(s) - triclinic crystal system , orthorhombic crystal system , lanthanide , magnetization , single crystal , magnetometer , crystallography , anisotropy , magnetic anisotropy , chemistry , single molecule magnet , molecule , magnet , materials science , crystal structure , physics , ion , magnetic field , optics , organic chemistry , quantum mechanics
Angular‐resolved single‐crystal magnetometry is a key tool to characterise lanthanide‐based materials with low symmetry, for which conjectures based on idealised geometries can be totally misleading. Unfortunately the technique is strictly successful only for triclinic structures, thus reducing significantly its application. By collecting out‐of‐equilibrium magnetisation data the technique was extended to the orthorhombic organometallic Cp*ErCOT single‐molecule magnet (SMM), thus allowing for the first time the reconstruction of the molecular anisotropy tensor notwithstanding the two molecular orientations in the crystal lattice. The results, flanked by state‐of‐the‐art ab initio calculations, confirmed the expected orientation of the molecular easy axis of magnetisation and thus validated the synthetic strategy based on organometallic complexes of a single lanthanide ion.