Controllable synthesis of 1D, 2D and 3D networks: Three novel metal–organic coordination compounds from 1,3-thiazolidine-2-thione ligand and silver salts

Three novel metal–organic coordination polymers, [Ag(tzdt)2NO3]n (1) (tadtH = 1,3-thiazolidine-2-thione), [Ag2(tzdt)2(tzdtH)2]n (2), and [Ag4(tzdt)4(tzdtH)2]n (3), were controllably synthesized under similar conditions by using organic alkali Et3N and KBF4 as structure-direct agent. Compound 1 shows a novel 1D ladder-like chain, which crystallizes in orthorhombic system, Pnma space group. Compound 2 is a 2D layer network, which crystallizes in monoclinic system, P21/c space group. And compound 3 possesses an interesting 3D channel architecture, which crystallizes in orthorhombic system, Fdd2 space group. Both compound 2 and compound 3 show a strong Ag–Ag interaction. The tzdtH ligand is able to form two coordination modes by controlling the dosage of organic alkali, which link with metallic cation and allow forming different dimensional structures as we conceived.

Graphical abstractThree novel coordination polymers with distinct architectures were successfully synthesized from heterocyclic thionate ligands tzdtH and Ag(I) ions. The strong coordinate abilities of Nendo and Sexo endow tzdtH ligand with multiform coordination modes by controlling the dosage of organic alkali, which could led to different dimensional structures. In fact, the method proposed in this study may have common sense. More metal–organic coordination architectures based on controlling the dosage of organic alkali and controlling of alkali processing speed are in progress in our laboratory.Figure optionsDownload full-size imageDownload as PowerPoint slide