Crystal structure of poly[deca aqua-bis(μ 4-2-(triazol-1-yl)-benzene-1,3,5-tricarboxylato)- bis(μ 5-2-(triazol-1-yl)-benzene-1,3-dicarboxylato-5-carboxyl acid) pentamanganese(II)] dihydrate, C44H42Mn5N12O36

C44H42Mn5N12O36, triclinic, P 1 ‾ $\overline{1}$ (no. 2), a = 7.6398(7) Å, b = 9.9043(5) Å, c = 20.1160(13) Å, α = 87.300(5)°, β = 81.868(6)°, γ = 67.555(7)°, V = 1392.62(18) Å3, Z = 1, R gt (F) = 0.0554, wR ref (F 2) = 0.1446, T = 293(2) K.

Transformation of the coordination nanostructures of 4,4',4''-(1,3,5-triazine-2,4,6-triyl) tribenzoic acid molecules on HOPG triggered by the change in the concentration of metal ions

The modulation effects of Cu²⁺/Fe³⁺ ions on the hydrogen-bonded structure of 4,4',4''-(1,3,5-triazine-2,4,6-triyl) tribenzoic acid (TATB) on a HOPG surface have been investigated at the liquid-solid interface by scanning tunneling microscopy (STM). STM observations directly demonstrated that the self-assembled honeycomb network of TATB has been dramatically transformed after introducing CuCl₂/FeCl₃ with different concentrations. The metal-organic coordination structures are formed due to the incorporation of the Cu²⁺/Fe³⁺ ions. Interestingly, a Cu²⁺ ion remains coordinated to two COOH groups and only the number of COOH groups involved in coordination doubles when the concentration of Cu²⁺ ions doubled. A Fe³⁺ ion changes from coordination to three COOH groups to two COOH groups after increasing the concentration of Fe³⁺ ions in a mixed solution. Such results suggest that the self-assembled structures of TATB molecules formed by metal-ligand coordination bonds can be effectively adjusted by regulating the concentration of metal ions in a mixed solution, which has rarely been reported before. It explains that the regulatory effect of concentration leads to the diversity of molecular architectures dominated by coordination bonds.

A new trinuclear cluster-based Cd(II) compound: photocatalytic property and nursing application values on the bacterial infection

A new Cd(II) coordination polymer with the formula of {[(CH3)2NH2][Cd3(NH2-bdc)3(btz)(H2O)]} n (1 NH2-H2bdc = 2-aminoterephthalic acid, Hbtz = 1 H-benzotriazole) was produced and then it was structurally characterized through powder X-ray diffraction (PXRD), the analysis of X-ray single-crystal diffraction, along with elemental analysis (EA). The photocatalytic property investigations indicate that compound 1 exhibits good activity for photodegradation of methyl violet (MV) with 60.7% of MV removal in 40 min under room temperature. Furthermore, the assessment of the compound's treatment activity and nursing application values on the bacterial infection was conducted and its corresponding mechanism was also studied. Evaluation of the in vitro hemolysis of the compound was determined by measuring the degree of red blood cell lysis and hemoglobin release. The effect of new compounds on the relative proliferation rate of L-929 cells was measured by MTT assay. The ELISA detection kit showed that the compound could reduce the TNF-α and IL-1β content released into plasma. Next, the inhibitory activity of the compound on the bacterial survival gene expression was also proved with real-time RT-PCR. The hemolysis rate of the new compound to blood is 3.4%, which is less than the standard 5%, which is non-hemolytic reaction. The compound also has no obvious cytotoxicity and has good cell compatibility.

Luminescence sensing and photocatalytic activities of four Zn(ii)/Co(ii) coordination polymers based on a pyridinephenyl bifunctional ligand

Four Zn(ii)/Co(ii) CPs act as bifunctional materials in the detection of Fe(iii) cation, Cr(vi) anion, and nitrofuran antibiotics and removal of methylene blue in aqueous media.