Crystal structure of poly[μ2-aqua-aqua(μ<inf>2</inf>-4-nitro-2,5,6-trioxo-1,2,5,6-tetrahydropyridin-3-olato)-hemi-μ<inf>4</inf>-oxalato-barium(II)]

In the title coordination polymer, [Ba(C5HN2O6)(C2O4)0.5(H2O)2]n, the tenfold coordination of the Ba centre consists of four O atoms from the two 4-nitro-2,5,6-trioxo-1,2,5,6-tetrahydropyridin-3-olate (L) anions, three O atoms of two oxalate anions and three water molecules. The Ba - O bond lengths fall in the range 2.698 (3)-2.978 (3) Å. The L ligand chelates two Ba atoms related by a screw axis, leading to formation of fused five- and six-membered chelate rings. Due to the bridging function of the ligands and water molecules, the complex monomers are connected into polymeric two-dimensional layers parallel to the bc plane. Intermolecular O - H⋯O hydrogen bonds link these layers into a three-dimensional supramolecular framework

Thladiantha Seed Oils - New Source of Conjugated Fatty Acids: Characterization of Triacylglycerols and Fatty Acids

In this study, seed oils of Thladiantha nudiflora and Thladiantha dubia were found to contain 55.5 and 44.4% mole of conjugated octadecatrienoic fatty acids, respectivel

Crystal structure of chlorido{1-(2, 3-dimethyl-5-oxido-1-phenyl-1H-pyrazol-2-ium-4-yl-κO)-2-[3-methyl-5-oxo-1-phenyl-4, 5-dihydro-1H-pyrazol-4-ylidene-κO]hydrazin-1-ido-κN1}copper(II) from laboratory X-ray powder data

In the title compound, [Cu(C21H19N6O2)Cl], the CuII atom is in a slightly distorted square-planar coordination involving two O atoms from the pyrazolone rings [Cu - O = 2.088 (10) and 1.975 (10) Å], an N atom of the azo group [Cu - N = 2.048 (13) Å] and a chloride anion [Cu - Cl = 2.183 (5) Å]. The organic anions act as tridentate chelating ligands. The molecules stack in columns along the c axis

Crystal structure of poly[μ2-aqua-aqua(μ<inf>2</inf>-4-nitro-2,5,6-trioxo-1,2,5,6-tetrahydropyridin-3-olato)-hemi-μ<inf>4</inf>-oxalato-barium(II)]

In the title coordination polymer, [Ba(C5HN2O6)(C2O4)0.5(H2O)2]n, the tenfold coordination of the Ba centre consists of four O atoms from the two 4-nitro-2,5,6-trioxo-1,2,5,6-tetrahydropyridin-3-olate (L) anions, three O atoms of two oxalate anions and three water molecules. The Ba - O bond lengths fall in the range 2.698 (3)-2.978 (3) Å. The L ligand chelates two Ba atoms related by a screw axis, leading to formation of fused five- and six-membered chelate rings. Due to the bridging function of the ligands and water molecules, the complex monomers are connected into polymeric two-dimensional layers parallel to the bc plane. Intermolecular O - H⋯O hydrogen bonds link these layers into a three-dimensional supramolecular framework

Crystal structure of chlorido{1-(2, 3-dimethyl-5-oxido-1-phenyl-1H-pyrazol-2-ium-4-yl-κO)-2-[3-methyl-5-oxo-1-phenyl-4, 5-dihydro-1H-pyrazol-4-ylidene-κO]hydrazin-1-ido-κN1}copper(II) from laboratory X-ray powder data

In the title compound, [Cu(C21H19N6O2)Cl], the CuII atom is in a slightly distorted square-planar coordination involving two O atoms from the pyrazolone rings [Cu - O = 2.088 (10) and 1.975 (10) Å], an N atom of the azo group [Cu - N = 2.048 (13) Å] and a chloride anion [Cu - Cl = 2.183 (5) Å]. The organic anions act as tridentate chelating ligands. The molecules stack in columns along the c axis

Removing organic harmful compounds from the polluted water by a novel synthesized cobalt(II) and titanium(IV) containing photocatalyst under visible light

A facile approach for the synthesis of nanoporous cobalt oxide, anatase, rutile, and mix of rutile-anatase phase through thermal decomposition of organometallic complex compounds of phloroglucinol carboxylic acid were used for the first time in order to remove the organic-harmful compounds from water. The complex compounds and nanoparticles were characterized by X-ray diffraction (XRD), UV–vis spectroscopy, FT-IR spectroscopy, elemental analysis (metal, organic atoms), Field-Emission Scanning Electron microscopy (SEM), NMR spectroscopy, quantum chemical modeling, photoluminescence, and thermal analysis techniques. The results illustrated that TiO2 nanoparticles in three different structures/ phases (Anatase, Anatase-Rutile mixture, and Rutile) and nanoporous cobalt oxide were isolated. In order to examine the possibility of modification of the structures based on TiO2, a new method was also applied, including grinding and thermal decomposition of titanium and cobalt complexes in the different ratio (10 %-to-90 %). Titanium and cobalt complexes were mixed, and ground well and then heated to 500 °C for 2 h. Nanoparticles of titanium and cobalt oxides mixtures were studied by SEM, EDX, XRD, and photoluminescence methods. The ability of the obtained product in the environmental field was tested. The results showed it led to the formation of cobalt (II) titanate of perovskite-like structures and Ti80 %Co20 % ratio was the most proper ratio to absorb visible light. Finally, this sample was used as a photocatalyst to degrade bromophenol blue (BPB), as a harmful organic target, under visible light and it could reduce the concentration of BPB to 82 % after 120 min, which showed it to be a powerful photocatalyst to treat water. © 2020 Elsevier B.V