Bis(4,4′-bipyrid­yl)bis{2-[4,6-bis­(carboxy­methyl­sulfan­yl)-1,3,5-triazin-2-ylsulfan­yl]acetato}zinc(II)

In the title compound, [Zn(C(9)H(8)N(3)O(6)S(3))(2)(C(10)H(8)N(2))(2)], the central Zn(II) ion, situated on a center of inversion, adopts an octa­hedral geometry coordinated by four O atoms from two carboxyl­ate groups and two carboxylic groups of two symmetry-related TTTA ligands and two N atoms from two bpy mol­ecules {TTTA is 2,2′,2′′-[1,3,5-triazine-2,4,6-triyltris(sulfanedi­yl)]triacetic acid and bpy is 4,4′-bipyridine}. These mononuclear units are connected through complementary O—H⋯X hydrogen bonds, as well as through weak C—H⋯X (X = O and N) inter­actions, resulting in a three-dimensional supra­molecular architecture.