Abstract
An air-stable mononuclear Dy(III) single molecule magnet [Dy(L)(F5PhO)2](BPh4) (1) was synthesized using the equatorial sexadentate ligand N,N′-bis-pyridin-2-yl-methylene-1,8-diamino-3,6-dioxaoctane (L) and the axial ligand pentafluorophenoxide (F5PhO-). Complex 1 shows zero-field slow magnetic relaxation behavior. When a 200 Oe direct field was applied, two slow relaxation processes were observed for 1; they are caused by intermolecular dipole interactions and moment reversal. An additional magnetic dilution experiment resulted in a material with a single slow relaxation and an energy barrier of 76(8) K, indicating that quantum tunneling of the magnetization (QTM) induced by intermolecular dipolar interactions was suppressed.
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