Syntheses, structures, and luminescence properties of four metal–organic polymers with undocumented topologies constructed from 3,5-bis((4′-carboxylbenzyl)oxy)benzoate ligand

摘要: Solvothermal reactions of one semirigid tricarboxylic acid and transition metal cations in the absence or presence 1,4-bis(1H-imidazol-4-yl)benzene (1,4-bib) afford four coordination polymers, namely, [Cd(Hbcb)]n (1), [M(Hbcb)(1,4-bib)]n (M = Cd (2), Mn (3), Fe (4)) (H3bcb 3,5-bis((4′-carboxylbenzyl)oxy)benzoic acid). Their structures have been determined by single-crystal X-ray diffraction analyses further characterized elemental analyses, IR spectra, powder (PXRD), thermogravimetric (TG) analyses. Structural analysis revealed that complex 1 exhibits an intriguing [Cd(COO)2]n tube-like chain based 3D framework with unprecedented 6-connected (48·67) topology. Complexes 2–4 show isomorphism new (3,5)-connected frameworks point Schlafli symbol (4·6·8)(4·64·85) on [M(COO)]n chain. Moreover, photoluminescence properties 2 investigated solid state at room temperature.