Syntheses,Structures, and Photoluminescence of Two Three‐dimensional Cadmium Coordination Polymers with Benzene­dicarboxylate Ligands

Two cadmium(II) coordination polymers, namely, Cd₃(m‐phth)₂(atz)₂]_n ( 1 ) (m‐phth = m‐phthalate and atz = 3‐amino‐1,2,4‐triazolate) and Cd(atphth)(H₂O)]_n ( 2 ) (atphth = 2‐aminoterephthalate), were synthesized and structurally characterized. Compound 1 features a three‐dimensional (3D) pillared framework based on two‐dimensional (2D) cadmium‐benzenedicarboxylate ladders pillared by the triazolate ligands. Compound 2 has a 3D framework constructed from 2D cadmium‐benzenedicarboxylate layers, which are further linked by Cd–N bonds between the cadmium ions and amino groups of the atphth^2– ligands of the adjacent layers to form the final 3D structure. Compounds 1 and 2 exhibit solid‐state photoluminescence with emission maxima at 448 and 470 nm, respectively.