Three new lanthanide-nitronyl nitroxide radical complexes were successfully synthesized with the formula of [Ln(hfac)3 (PyNONIT)2] (Ln=Dy (1), Tm (2), Ho (3)). All the complexes were isostructural and crystallized inC2/c space group, in which the central metal ions were eight-coordinated in slightly distorted square antiprism coordination geometries (D4d symmetry). Magnetic studies indicated the existence of antiferromagnetic interaction in complexes1–3.
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