Construction of one 2D samarium-organic framework based on 2,4′-biphenyldicarboxylate

Abstract A new 2D samarium compound [Sm(2,4′-bpdc)(2,4′-Hbpdc)H 2 O] n ( 1 ) (2,4′-H 2 bpdc = 2,4′-biphenyldicarboxylic acid) has been successfully constructed by the hydrothermal reaction of Sm 2 O 3 with 2,4′-H 2 bpdc, and characterized by elemental analysis, IR spectroscopy and thermogravimetric analysis, as well as single-crystal X-ray diffraction. The results reveal that complex 1 possesses a 2D framework with 4 4 topology constructed from one-dimensional lanthanide-carboxylate meso -helical chains [Sm(O–C–O) 2 ] n ( Δ  +  Λ ) and (2,4′-bpdc 2− ) 2 pillars; this complex represents the first example of a lanthanide compound containing 2,4′-biphenyldicarboxylate as the sole ligand. Moreover, compound 1 displays a certain photoluminescent property and high thermal stability.