Copper 3,4-pyridinedicarboxylate mixed ligand coordination polymers with diverse topologies and aqueous Congo Red degradation catalytic properties
作者:Ellese C. Jaddou、Robert L. LaDuca
DOI:10.1016/j.poly.2020.114427
日期:2020.4
Hydrothermal reaction of copper nitrate, 3,4-pyridinedicarboxylic acid (34pdcH(2)), and a variety of ditopic dipyridyl ligands afforded six new coordination polymer solids with diverse 2D and 3D topologies as characterized via single-crystal X-ray diffraction. [Cu(34pdc)(dpa)]center dot H2O}(n) (1, dpa = 4,4'-dipyridylamine) reveals a 3,5-connected layered net with a (4(2)6)(4(2)6(7)8) topology. [Cu(34pdc)(3pina)](n) (2, 3pina = 3-pyridylisonicotinamide) manifests a 2-fold interpenetrated 3,5-connected 3D net with (4(2)6)(4(2)6(5)8(3)) topology. [Cu-2(34pdc)(2)(bbn)(H2O)(2)]center dot 7H(2)O}(n) (3, bbn = bis(butane-1,4-diyl)nicotinamide) shows a 3D trinodal network with (6(3))(2)(6.10(2))(6(4)10(2))} topology, with looped pairs of bbn ligands acting as single connectors. [Cu-4(34pdc)(4)(bbin)(H2O)(4)]center dot 8H(2)O}(n) (4, bbin = bis(butane-1,4-diyl)isonicotinamide) displays a quite complicated 3D multinodal network with (6(3))(2)(6(2)8)(6(2)8(2)10(2))(6(6)8(3)10)} topology. [Cu-2(34pdc)(2)(pebn)(H2O)]center dot 8H(2)O}(n) (5, pebn = bis(pentane-1,5-diyl)nicotinamide) shows a 3,4,4-connected 2D network with (6(3))(2)(6(4)7(2))(6.7(4).11)} topology, along with entrapped chair-centered 14-water molecule clusters. [Cu-4(34pdc)(4)(hbn)(H2O)(4)]center dot 3H(2)O}(n) (6, hbn = bis(hexane-1,6-diyl)nicotinamide) showed the same (6(3))(2)(6.10(2))(6(4)10(2))} topology as 3, but with single dipyridylamide ligands instead of looped pairs. Thermal decomposition of these six new materials are also probed, along with their catalytic behavior for the aqueous degradation of Congo Red dye in the presence of ultraviolet radiation and hydrogen peroxide. (C) 2020 Elsevier Ltd. All rights reserved.