A Series of Coordination Polymers Constructed from a Multidentate N‑Donor Ligand and Varied Carboxylate Anions: Syntheses, Structures, and Luminescent Properties

Ten new coordination polymers, [Zn2­(Htrb)­(L1)2]·8H2O (1), [Zn2­(Htrb)­(HL2)2­(H2O)2]·4H2O (2), [Co2­(Htrb)­(HL2)2­(H2O)2]·4H2O (3), [Cd2­(Htrb)­(HL2)2­(H2O)2]·4H2O (4), [Cu3­(Htrb)­(L2)2­(H2O)2]·8H2O (5), [Ag5­(Htrb)­(HL2)­(L2)­(H2O)2]·2H2O (6), [Ag6­(Htrb)2­(HL3)2­(L4)]·2H3L3·6H2O (7), [Ag4­(Htrb)2­(H2L5)2] (8), [Ag6­(Htrb)2­(HL6)2­(H2O)3]·2H2O (9), and [Ag2­(Htrb)]·2NO3 (10), based on a hexadentate N-donor ligand hexakis­(1,2,4-triazol-ylmethy1)­benzene (Htrb) and different carboxylates, have been synthesized (H2L1 = 5-OH-1,3-benzenedicarboxylic acid, H3L2 = 1,3,5-benzenetricarboxylic acid, H3L3 = 1,2,4-benzenetricarboxylic acid, H2L4 = 2-CH2OH-1,4-benzenedicarboxylic acid, H4L5 = 3,3′,4,4′-benzophenone tetracarboxylate acid, and H4L6 = 4,4′-oxidiphthalic acid). Compounds 1–4 feature typical 2D binodal 4-connected networks with a (4·64·8)2­(42·64) topology. Compound 5 exhibits a 3D (4,6)-connected (44·62)­(44·610·8) framework. Compound 6 shows a 3D trinodal (6,8)-connected framework with a (34·44·52·65)2­(34·412·54·68) topology. Compound 7 features an unusual 3D trinodal (4,6)-connected net with a (32·62·72)­(3·4·5·62·8)2­(32·42·52·64·72·83) topology. Compound 8 displays a 2D layer with a (3,4)-connected (4·62)2­(42·62·82) topology. Compound 9 shows a uninodal 2D 4-connected network with a (44)­(62) topology. Compound 10 reveals a 3D (4,8)-connected (46)2­(412·612·84) net. The ligand effects on the complex structures were studied. Moreover, their luminescent emissions were studied at room temperature.