Syntheses directed by ionic liquids: structures and properties of six novel lanthanide 1,3,5-benzenetrisbenzoate frameworks.

The results of variable-temperature magnetic studies show that the magnetic interaction between the Ln(III) ions in B 3 b , B 5 b and B 6 b is mainly due to antiferromagnetic coupling as well as the depopulation of the Stark levels. The larger I i value of B 5 b compared with that of B 6 b also indicates that the magnetic interactions between the Ln(III) ions in B 5 b are stronger than that in B 6 b . Keywords: crystal structure; ionic liquid; lanthanide-organic frameworks; magnetism EN crystal structure ionic liquid lanthanide-organic frameworks magnetism 149 155 7 03/11/22 20220201 NES 220201 1 Introduction The exploratory preparation and investigation of lanthanide-organic frameworks (LOFs) have captured increasing attention in the last decades, driven largely by their various coordination geometries, peculiar luminescent and magnetic properties, as well as potential applications in gas adsorption, catalysis and additives in metallurgy [[1]], [[2]], [[3]], [[4]], [[5]], [[6]]. Each Gd(III) ion is coordinated to eight oxygen atoms from six carboxylate groups of the BTB ligands and one terminal water molecule, resulting in a distorted bicapped trigonal prismatic coordination geometry (Figure 1). [Extracted from the article]