Three metal-organic polymers assembled from Cd(II)–fluconazole: Syntheses, crystal structures, and characterization

Abstract

Three new complexes [Cd(Hflu)2(NO3)](NO3) 1, [Cd(H2O)(Hflu)2(Hmalo)](NO3)∙2(H2O) 2, and [Cd(H2O)(Hflu)2(Hfum)](NO3)∙2(H2O) 3 (Hflu = [2-(2,4-difluorophenyl)-1,3-bis(1,2,4-triazol-1-yl)-propan-2-ol], H2fum = fumaric acid, H2malo = malonate acid) are synthesized by a solution diffusion method and characterized by single crystal X-ray diffraction methods, elemental analyses, IR spectroscopy as well as thermal analyses. In compound 1, Cd(II) cations are bridged by fluconazole ligands to form 2D Cd−Hflu layers, and these layers are further connected by C–H∙∙∙F hydrogen bonds to form a complicated 3D structure with the topology of (4∙6∙8)(4∙64∙84∙10)(6∙3). Compounds 2 and 3 are isostructural, and in them the Cd(II) cations are bridged by fluconazole ligands to form a 2D network, which is connected by C–H∙∙∙O hydrogen bonds to form a complicated 3D (3,4)-connected framework with the topology of (4∙82)(4∙85).