A New Family of Heterometallic LnIII[12-MCFeIIIN(shi)-4] Complexes: Syntheses, Structures and Magnetic Properties

Abstract

Abstract:A new family of Ln III ] compounds of formulas (C 5

Synthesis, Structural, and Magnetic Characterization of a Mixed 3d/4f 12-Metallacrown-4 Family of Complexes

“…The core of 2 comprises four Mn III and one Tb III atoms arranged in a square pyramidal-like topology with the Tb atom occupying the apical position of the pyramid and the Mn atoms completing the base ( Figure S1). Although there have been numerous 12-MC-4 complexes reported to date, only a few comprise the 3d/4f motif with salicylhydroxamic acid (shiH 3 ) [23][24][25]. If we further restrict the above requirements, by exclusively using Mn III as the periphery ring metal ion, only a very few papers have been published featuring the above qualifications.…”

Tuning white light emission using single-component tetrachroic Dy3+ metallacrowns: the role of chromophoric building blocks

“…Thus, independently of the nature of the Ln 3+ (Ln 3+ = Pr 3+ -Yb 3+ ) and for a variety of M 3+ metals located in the ring (M 3+ = Al 3+ , Ga 3+ , Mn 3+ , Fe 3+ ), the use of the salicylhydroximate 'O-C-C-CO-NHOH' motif in combination with carboxylic or hydroxy ligands has been shown to form similar monomeric LnM 4 (L 0 ) 4 (L 00 ) 4 (Fig. 1D), 43,[73][74][75][76] dimeric Ln 2 M 8 (L 0 ) 8 (L 000 ) 4 (Fig. 1E) 44,71,[77][78][79] or LnM 8 (L 0 ) 8 (OH) 4 (Fig.…”

3d/4f Sandwich Complex Based on Metallacrowns

“…Unlike other high-performing SMMs, metallacrowns show a high stability in air and in solution and can be synthesized by a self-assembly approach. Lanthanide-centered half-sandwich and sandwich-type metallacrown complexes with ring ions like Al 3+ , Fe 3+ , Ga 3+ , Mn 3+ , and Zn 2+ have been synthesized to study their luminescent and magnetic properties. − However, although the reported complexes possess D 4 d symmetry, the energy barrier is considerably low. ,− For Tb 3+ complexes, a closer look at the ideal ligand-field conditions reveals that the anisotropy is highly dependent on the zenithal angle α (Figure ).…”