A novel three-dimensional zinc(II) coordination polymer based on 3,3′-{[1,3-phenylenebis(methylene)]bis(oxy)}dibenzoic acid and 1,4-bis(pyridin-4-yl)benzene: synthesis, crystal structure and photocatalytic properties

Abstract

A novel three‐dimensional (3D) ZnII coordination polymer, namely, poly[[[1,4‐bis(pyridin‐4‐yl)benzene](μ3‐3,3′‐{[1,3‐phenylenebis(methylene)]bis(oxy)}dibenzoato)zinc(II)] 1,4‐bis(pyridin‐4‐yl)benzene], {[Zn(C22H16O6)(C16H12N2)]·C16H12N2}n or {[Zn(PMBD)(DPB)]·DPB}n, 1, where H2PMBD is 3,3′‐{[1,3‐phenylenebis(methylene)]bis(oxy)}dibenzoic acid and DPB is 1,4‐bis(pyridin‐4‐yl)benzene, has been synthesized by self‐assembly using zinc nitrate, a semi‐rigid dicarboxylic acid and a nitrogen‐containing ligand. The single‐crystal X‐ray structure determination indicates that 1 possesses an intriguing 3D architecture with a 4‐connected uninodal cds topology, which is constructed from dinuclear {Zn2} clusters and V‐shaped PMBD2− linkers. Compound 1 exhibits excellent photocatalytic activity on the degradation of the organic dyes Rhodamine B (RhB), Rhodamine 6G (Rh6G) and Methyl Red (MR).

Zinc(II) Carboxylate Coordination Polymers with Versatile Applications

“…Another complex, {[Zn(pmbd)(dpb)]∙dpb} n ( 72 ) (H 2 pmbd = 3,3′-{[1,3-phenylene-bis(methylene)bis(oxy)}dibenzoic acid), has proven to be efficient as a photocatalyst for RhB, rhodamine 6G (Rh6G), and methyl red (MR) in aqueous solution under UV irradiation [ 89 ]. Hence, the degradation efficiency follows the order: RhB > Rh6G > MR, and according to developed measurements, the authors concluded that complex ( 72 ) is a suitable candidate for the photocatalytic decomposition of organic dyes.…”