The synthesis of two new WOCl4 derivatives that contain fluorinated aryloxide ligands are reported, along with a description of their behavior as precatalysts in the metathesis polymerization of hydrocarbon dienes and cycloolefins. Crystal data for trans-bis(2,6-dibromo-4-fluorophenoxy)tungsten ...

A new series of tungsten complexes, tungsten(VI) oxo-alkoxide-β-ketoesterate complexes have been synthesized and characterized by infrared and NMR spectroscopy. Thermogravimetric analysis has been carried out on the complexes as a function of temperature, and isothermally as a function of time....

Reactions of WVI and MoV chlorides with azoxybenzene yield ionic species of WVI and MoVI oxychlorides in which the cation is a protonated azobenzene. The reaction between MoCl5 or MoOCl4 and azoxybenzene gives, after extraction with methylene chloride—ethanol mixture, the complex [trans-MoOCl4(...

This is the first paper to report a series of bismuth oxyfluoride/bismuth oxyiodide (BiOpFq/BiOxIy) nanocomposites with different F/I molar ratios, pH values, and reaction temperatures that were synthesized through a template-free and controlled hydrothermal method. These nanocomposites were cha...

Perchlorate salts and the ferric sulfate mineral jarosite have been detected at multiple locations on Mars by both landed instruments and orbiting spectrometers. Many perchlorate brines have eutectic temperatures

We have reported the synthesis involving the condensation of pyridoxal with tris(2-aminoethyl)amine obtained a tripodal ligand, as well as its subsequent complexation with the manganese(II) and nickel(II) ions. The structural analysis revealed, in the case of complex 1, the formation of a monome...

Three new complexes [Co(N3Py2)(H2O)](ClO4)2 1, [Ni(N3Py2)(H2O)](ClO4)2 2 and [Cu(N3Py2)](ClO4)2 3 (N3Py2 is N,N′-dimethyl-N-(2-(methyl(pyridin-2-ylmethyl)amino)ethyl)-N′-(pyridin-2-ylmethyl)ethane-1,2-diamine) have been synthesized and characterized. Non-heme ligand N3Py2 have been prepared by...

Reactions of monoanionic bidentate ligands 5-methylsalicylaldehyde (5-msal), 5-bromosalicylaldehyde (5-brsal), 5-nitrosalicylaldehyde (5-nsal) and 2-hydroxy-1-naphthaldehyde (2-hnap) with nickel perchlorate hexahydrate produced nickel(II) complexes 1–4, respectively. Single crystal X-ray analys...

A novel tetradentate (N,O)-donor salen type Schiff base was designed, prepared and structurally characterized by different analytical techniques. This Schiff base ligand, (L = 2,2'-((1,2 phenylenebis(methanylylidene))bis(azanylylidene))diphenol) behaved as an effective chemosensor towards N...

Two new heteroleptic Ni(II) pincer complexes of s-triazine core ligand (L) were synthesized and characterized. The two complexes [NiL(H2O)2Cl]Cl; (1) and [NiL(H2O)3](ClO4)2.H2O; (2) showed a slightly distorted octahedral configuration around Ni(II), and L acts as a tridentate N-chelate with NiN ...

Reaction of a symmetric compartmental Schiff-base ligand, (H2L) with nickel(II) perchlorate hexahydrate in 1:1 M ratio in methanol gives rise to a mononuclear nickel(II) compound, NiL (1). The compound has been characterized by C, H, N microanalyses and UV–Vis spectra. The single crystal X-ray ...

We report a simple, low temperature and surfactant free co-precipitation method for the preparation of nickel ferrite nanostructures using ferrous sulfate as the iron precursor. The products obtained from this method were compared for their physical properties with nickel ferrites produced throu...

Zeolites are commonly used as adsorbents for metal removal in most applications e.g. in wastewater. However, the ubiquity of iron in such systems may, in the long-term, distort the true interactions and mechanisms of contaminant removal as a result of modification of the zeolite surface. In this...

The iron–manganese doped sulfated zirconia catalysts were prepared via precipitation method; the sulfation was carried out by impregnation with different amounts of sulfate (4%, 10% and 16% SO4− 2 by weight) with the addition of Fe–Mn doped and calcined at 600 °C for 3 h. The prepared catalys...

Sulfated mesoporous Fe–Al bimetallic adsorbent, prepared by a simple method of incipient-wetness impregnation, was employed as an efficient adsorbent to remove As(V) from solution. Removal performance was investigated by batch experiments with various factors, including ferric content, inorgani...

In this work, carboxylic groups were introduced to latex microspheres (LMs) to obtain poly(styrene-butyl acrylate) (P(St-BA)-COOH) LMs with negative charges by a soap-free emulsion polymerization method. Then P(St-BA)-COOH LMs were added into an aqueous solution composed of acrylamide (AAm) and ...

The formation of pyrite has been extensively studied because of its abundance in many anoxic environments. Yet, there is no consensus on the underlying pathways and kinetics of its formation. We studied the formation of pyrite during the reaction between reactive ferric hydroxides (goethite and ...

A comprehensive study of the catalytic behaviour of Fe3+ in the presence of tannic acid during the Fenton-based treatment of chlorophenols-contaminated water was performed. The ability of the iron-containing sludge to catalyse the Fenton-based process was assessed and the mechanistic behaviour o...

The study of sonolytic degradation of metazachlor (MZC), which was activated by either oxygen or insoluble Fe(III) was performed. Herbicide MZC was selected as a target compound due to its wide use in agriculture. The results indicated the positive effect of oxygen used as undoubtedly the most h...

The reaction of 2-trimethylsilyl-1,2,3-triazole with acid chlorides readily forms triazole amides. The triazole amides, when heated to 150°C in sulfolane, rearrange with the elimination of nitrogen to give 2-substituted oxazoles in high yields. The oxazole synthesis is general, and can be carri...