One-dimensional lanthanide selenite-carboxylate compounds: Synthesis, crystal structure and properties

Five new isostructural lanthanide selenite-carboxylate compounds, namely Ln(SeO3)(2,6-pdcH)(H2O)2 (Ln = La (1), Ce (2), Pr (3), Nd (4), Nd/La (5), 2,6-pdcH2 = pyridine-2,6-dicarboxylic acid) have been hydro-/solvothermally synthesized and structurally characterized. The structures feature one-dimensional chain along the a axis. Their thermal and photoluminescent properties have been studied.