Syntheses, structural diversity and properties of a series of coordination polymers based on 4-substituted bis(triazole) and multicarboxylate ligands

Seven coordination polymers, {[Co(btrb)(MeOip)]center dot H2O}(n), (1), [CO(btrb)(0.5)(NH(2)ip)(H2O)](n) (2), [Cu(btrb)(0.5)(NH(2)ip)(H2O)](n) (3), {[CO3(btrb)(1.5)(Meip)(3)(H2O)]center dot 3H(2)O}(n) (4.3H(2)O), [Zn(btrb)(0.5)(1,4-bdc)](n) (5), [Zn-2(btrb)(0.5)(Meip)(2)](n) (6) and {[Zn-2(OH)(btrb)(0.5)(btc)(H2O)]center dot 4H(2)O}(n), (7.4H(2)O) (btrb = 1,4-bis(1,2,4-triazole-4-ylmethyl)benzene, H(2)MeOip = 4-methoxyisophthalic acid, H(2)NH(2)ip = 5-aminoisophthalic acid, H(2)Meip = 5-methylisophthalic acid, 1,4-H(2)bdc = terephthalic acid, H(3)btc = 1,3,5-benzenetricarboxylic acid), were synthesized and characterized. 1 shows a 4-connected 3D cds network. 2 and 3 exhibit a (3,4)-connected 2D network with the point symbol (4(2).6)(4(2).6(3).8). 4 presents a 6-connected 3D network based on a [Co-3(COO)(3)] trimeric cluster with the point symbol (4(8).5(4).6(3)). 5 exhibits a 3-fold interpenetrated pcu network based on a [Zn-2(COO)(2)] dimer. 6 shows a 2-fold interpenetrated pcu topology based on a [Zn-4(COO)(6)] tetramer. 7 shows a rare (3,8)-connected network based on [Zn-4(mu(3)-OH)(2)] clusters with the point symbol (4.5.6)(2)(4(2).5(6).6(16).7(2).8(2)). The photocatalytic properties of 1, 3 and 4 and the solid-state photoluminescence properties of 5-7 were investigated. (C) 2018 Elsevier Ltd. All rights reserved.