Important Counteranion Effect on Adsorption Efficacity of Hydrogen Sulfide by Silver(I)-Dithione Coordination Polymers.

Four new coordination polymers (CPs) have been prepared and evaluated for their efficacy in adsorbing hydrogen sulfide. The reactions of the structurally flexible assembling dithione ligand, , with different silver(I) salts lead to four new metal-organic coordination architectures (CPs , , , and ) exhibiting either one- or two-dimensional networks. CP , 2D-[(AgCl)], exhibits a linear series of rhomboid (S)Ag(μ-Cl)Ag(S) secondary building units (SBUs) where S is one of the thione functions of , altogether forming a 2D-network.

New Hg(II) coordination polymers based on a thioimidazole ligand with good performance to detoxify Hg(II) and reversibly capture iodine.

In the current paper, we have successfully synthesized three new mercury coordination polymers with fascinating structures and properties a flexible sulfur donor ligand, namely, 1, 2, and 3 [Ls = 1,1-bis(3-methyl-4-imidazoline-2-thione)methane]. These complexes have been characterized by means of different techniques such as single crystal X-ray crystallography, FT-IR, elemental analysis (CHNS), UV-Vis, PXRD, BET, and TGA. Suitable single crystals of all complexes were obtained using the branch tube method with a very high yield and good stability due to the high affinity of mercury to bind to the thione groups.

Simple synthesis of novel magnetic silver polymer nanocomposites with a good separation capacity and intrinsic antibacterial activities with high performance.

Two new coordination polymers namely, [(AgCN)L] (1) and [(AgCN)L] (2), were successfully synthesized by the reaction of AgNO and cyanide as a co-anion with L[1,1'-(hexane-1,4-diyl)bis(3-methylimidazoline-2-thione] and L[1,1,3,3-tetrakis(3,5-dimethyl-1-pyrazole)propane] ligands in order to use them for the preparation of magnetic nanocomposites with MnFeO nanoparticles by an efficient and facile method. They were then well characterized numerous techniques, including elemental analysis, FT-IR spectroscopy, TGA, PXRD, SEM, TEM, EDX, VSM, BET, ICP, and single-crystal X-ray diffraction. The considered polymers and their magnetic nanocomposites with nearly the same antibacterial activity demonstrated a highly inhibitive effect on the growth of Gram-negative (, ) and Gram-positive (, ) bacteria.