Near-infrared luminescence and magnetism of dinuclear lanthanide complexes constructed from a schiff-base and different β-diketonate coligands

Macrocycle supported dinuclear lanthanide complexes with different β-diketonate co-ligands displaying zero field single-molecule magnetic behaviour

“…In fact, the energy barriers in the present systems, varying in the narrow range 60.1–63.1 K, fall into the normal range among the reported Dy 2 SMMs with D 4d symmetry (Table 2). 9–13,31–44 In our recent report with analogous chloro-substituted (electron withdrawing) ligand system, we observed similar magnetic behaviour. 9 However, in the present case the methyl substitution (electron donating) in the ligand system brings slightly weaker SMM properties in the resulted complexes.…”

Metal Complexes with Schiff Bases: Data Collection and Recent Studies on Biological Activities

“…Binuclear complexes may present in the same or two different metals and are often more interesting than the mononuclear variants in chemical and biological studies. Binuclear complexes with SBs have been widely studied as catalysts [ 79 , 80 , 81 ], in fluorescence and luminescence studies [ 82 , 83 ], and also antimicrobial activities were reported [ 84 , 85 ]. More recently, binuclear complexes with SBs have been suggested for the therapy of COVID-19 disease [ 86 ] on the basis of molecular modeling studies [ 87 ].…”

Structures and magnetic properties of two series of Schiff base binuclear lanthanide complexes

“…[26][27][28] Compared with transition and actinides metals, lanthanides metals have stable +3 oxidation state, significant lanthanide effect, large ionic radius, and higher coordination number [29] ; therefore, many unusual coordination geometries can often be obtained in the construction of Schiff base lanthanide complexes. [30] However, the slight changes such as different aldehydes, length differences of organic amines, and different ratios of reactants may have a great impact on the magnetic properties of complexes during the design and synthesis of Schiff base lanthanide complexes. Considering the influence of different Schiff bases ligands on complexes, choosing Schiff bases ligands with flexible coordination modes will facilitate the synthesis of complexes with diverse structures.…”