2D pillar-chained 3d-4f heterometallic coordination polymers based on 2,4′-biphenyldicarboxylate

Abstract Two new 2D 3d-4f heterometallic compounds [Ln III Cu II (2,4′-bpdc) 2 ( μ 3 -OH)(C 2 H 5 OH)H 2 O] n (Ln = Tb( 1 ) and Eu( 2 ), 2,4′-H 2 bpdc = 2,4′-biphenyldicarboxylic acid) have been successfully constructed by the solvothermal reaction of Ln 2 O 3 , Cu(NO 3 ) 2 and 2,4′-H 2 bpdc in ethanol, and characterized by element analysis, IR spectroscopy, and thermal analysis, as well as single crystal X-ray diffraction. The results reveal that two complexes are isomorphous and exhibit 2D pillar-chained coordination frameworks with 3 6 ·4 6 ·5 3 topology constructed from one-dimensional lanthanide-transition oxo-bridged heterometallic chains [LnCu( μ 2 -O) 2 ( μ 3 -OH) 2 ] n and (2,4′-bpdc 2− ) 2 pillars. Furthermore, the photoluminescent properties of two compounds 1 and 2 were also studied.