Three zinc-organic frameworks based on 1,4-benzenebis(thioacetic acid): Syntheses, crystal structures, and luminescent properties

A new flexible aromatic multithiocarboxylate ligand: 1,4-benzenebis(thioacetic acid) (H2L), was synthesized and introduced to construct three interesting metal-organic frameworks (MOFs) with the photoluminescent properties. Three MOFs were characterized by the elemental analysis, infrared (IR) spectrum, and single crystal X-ray diffraction. [Zn3L3(2,2'-bipy)(2)](n) (1) is a two-dimensional (2D) layered architecture that consists of the linear trinuclear units of Zn atoms. [ZnL(2,2'-bipy)(H2O)](n)center dot 0.7nH(2)O (2) is a one-dimensional (1D) helical chain, which further forms a 2D structure with 30-membered ring with a size of 7.64 x 15.53 angstrom via O-H center dot center dot center dot O hydrogen bonds. [ZnL(phen)(H2O)](n)center dot 0.35nH(2)O (3) presents a 2D supramolecular network through the O-H center dot center dot center dot O interactions. Their thermal and photoluminescent properties in solid state were given. (C) 2009 Elsevier B.V. All rights reserved.