Two new inorganic anions directed Zn(II)-tetrazole frameworks: Syntheses, structures and photoluminescent properties

Constructing functional metal-organic frameworks by ligand design for environmental applications

Metal-organic frameworks (MOFs) with unique physical and chemical properties are composed of metal ions/clusters and organic ligands, including high porosity, large specific surface area, tunable structure and functionality, which have been widely used in chemical sensing, environmental remediation, and other fields. Organic ligands have a significant impact on the performance of MOFs. Selecting appropriate types, quantities and properties of ligands can well improve the overall performance of MOFs, which is one of the critical issues in the synthesis of MOFs. This article provides a comprehensive review of ligand design strategies for functional MOFs from the number of different types of organic ligands. Single-, dual- and multi-ligand design strategies are systematically presented. The latest advances of these functional MOFs in environmental applications, including pollutant sensing, pollutant separation, and pollutant degradation are further expounded. Furthermore, an outlook section of providing some insights on the future research problems and prospects of functional MOFs is highlighted with the purpose of conquering current restrictions by exploring more innovative approaches.

Crystal structure of bis(acetato-κO)bis{2-((1H-tetrazol-1-yl)methyl)-1H-benzo[d]imidazole-κN}zinc(II), C22H22N12O4Zn

C22H22N12O4Zn, monoclinic, P21/c (no. 14), a = 9.864(2) Å, b = 8.6657(17) Å, c = 30.803(8) Å, β = 106.67(3)°, V = 2522.3(10) Å3, Z = 4, R gt(F) = 0.0630, wR ref(F 2) = 0.1625, T = 293(2) K.

Crystal Structure and Biological Evaluation of Two Novel Organic-Inorganic Hybrid Materials as Antitumor Agents in the Treatment of Liver Cancer

Two novel organic-inorganic hybrid materials {(Hbiz)6[AsIII2AsVMoVI18O62]}·H2O (1, biz = benzimidazole) and (dim)[AsIII2AsVMoVI18O62] [2, dim = 1,6-bis(imidazol)hexane] have been successfully obtained by using the molybdenum arsenate and different N donor organic compounds and determined through X-ray single-crystal diffraction technique. The in vitro cytotoxicity of compounds 1 and 2 was then investigated against three human liver tumor cell lines (SMMC7721, Bel-7402, and MHCC97) by MTT assay. It was found that the two compounds showed potent use as antitumor agents against the aforementioned cell lines.

Two Metal–Organic Coordination Polymers Based on Polypyridyl Ligands: Crystal Structures and Inhibition of Human Spinal Tumour Cells

In this work, two new metal–organic coordination polymers [Co2.5(dtp)2(H2O)5](NO3)(H2O)2 (1, H2dtp = 4′-(3,5-dicarboxyphenyl)-2,2′:6′,2″-terpyridine) [Ni(dpt)](H2O)3 (2, H2dpt = 4′-(3,5-dicarboxyphenyl)-4,2′:6′,4″- terpyridine) have been successfully prepared by reaction of metal ions with two similar carboxylic-pyridinyl ligands with different arrangement of N atoms of terpyridines under solvothermal conditions. Powder X-ray diffraction, elemental analysis, and single-crystal X-ray diffraction techniques were used to probe the structures of the as-prepared complexes. The CoII-based complex 1 exhibits a finite molecular structure and 2 displays a 3D porous framework with a 1D channel. Furthermore, the in vitro anticancer activity of complexes 1 and 2 was evaluated via the MTT (3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyl tetrazolium bromide) assay against U-266, MM1S, and RPMI-8226 human spinal tumour cells.