A novel (4,6)-connected double-layered Ba^IIcoordination polymer based on the flexible tricarboxylate ligand 2,2′,2′′-[1,3,5-triazine-2,4,6-triyltris(sulfanediyl)]triacetic acid

Abstract

In the title compound, poly[[triaqua{μ(4)-2-[4,6-bis(carboxymethylsulfanyl)-1,3,5-triazin-2-ylsulfanyl]acetato}{μ(2)-2-[4,6-bis(carboxymethylsulfanyl)-1,3,5-triazin-2-ylsulfanyl]acetato}barium(II)] monohydrate], {[Ba(C(9)H(8)N(3)O(6)S(3))(2)(H(2)O)(3)]·H(2)O}(n), each Ba(II) atom is nine-coordinated by six O atoms from carboxylate groups of four different 2-[4,6-bis(carboxymethylsulfanyl)-1,3,5-triazin-2-ylsulfanyl]acetate ligands and three O atoms from water molecules. The triazine ligand is partially deprotonated, as verified by intermolecular hydrogen-bonding parameters, and adopts μ(2)-η(1):η(1) and μ(4)-η(1):η(1):η(2) coordination modes to connect the Ba(II) centres, forming a novel double-layered structure. Topological analysis indicates that the whole structure is a novel (4,6)-connected net, considering the ligands and Ba(II) centres as four- and six-connected nodes, respectively.

Poly[[(1,10-phenanthroline){μ3-2,2′,2′′-[1,3,5-triazine-2,4,6-triyltris(sulfanediyl)]triacetato}cadmium] 0.42-hydrate]

“…Flexible multi-functional carboxylic acids are widely investigated in this regard (Rao et al, 2004;Rowsell & Yaghi 2005;Wu et al, 2009). Previous reports of an alkaline earth and a series of lanthanide coordination complexes based on H 3 TTTA, 2,2',2''-[1,3,5-triazine-2,4,6triyltris(sulfanediyl)]tris-acetic acid, have appeared (Lu, et al, 2010;Wang, et al, 2007). Herein, we obtained a new Cd II complex assembled from this flexible ligand.…”