Syntheses and characterization of 2-D lanthanide complexes based on and isonicotinate N-oxide ligand

Abstract

The lanthanide complexes [Ln2(INO)2(SO4)2(H2O)4] · H2O 1 · Ln (Ln = Ce, Pr, and Nd; INO = isonicotinate N-oxide) were synthesized under hydrothermal conditions. The compounds are isostructural and crystallized in monoclinic space group C2/c. Ln(III) is nine-coordinate in a mono-capped square antiprism coordination environment. Ln(III) ions are linked by , N-oxide groups and carboxylates from INO to give an inorganic chain. These chains are connected by INO ligands into a 2-D layer. These layers are joined through hydrogen bonding interactions into a 3-D crystal structure.