The effect of additional methyl on the magnetic relaxation and toroidal moment of Dy6 complex

Abstract

Two new μ₄-O bridged hexanuclear lanthanide complexes, [Dy₆L′₄(μ₄-O)(NO₃)₄]·4CH₃OH (1) and [Sm₆L′₄(μ₄-O)(CH₃COO)₄]·2CH₃OH (2), have been assembled by using methyl modified Schiff-base ligand H₃L′ (2,6-bis((2-hydroxypropylimino)methyl)-4-methylphenol). The complex 1 shares a similar μ₄-O bridged Dy₆ core as the parent Dy₆-2, while coordination geometries and magnetic interactions are slightly changed upon the modulation of the ligand, which results in distinct single-molecule magnetic (SMM) and single-molecule toroic (SMT) properties.