Treatment of anhydrous dichloro(dioxido)molybdenum with one equivalent of (1,3-di-tert-butylpyrazolato)potassium in toluene at room temperature followed by the addition of (1,3-di-tert-butylacetamidinato)lithium or (1,3-diisopropylacetamidinato)lithium afforded MoO2(tBuNC(Me)NtBu)(3,5-tBu2pz) an...
A powerful direct reductive amination (DRA) method is developed, using catalytic MoO2Cl2 and phenylsilane (PhSiH3) as the reducing agent. The alkylation of a range of amines (pKa 0–7.8) with both an electron-deficient and two electron-rich-aldehydes is achieved in good to excellent yields. The ...
A new type of metastable MoO3 (confirmed with Raman spectroscopy, TG-DTA and XRD) was successfully synthesized from MoO2Cl2 solution derived from H2MoO4 powder and concentrated HCl solution. This new type of MoO3 was stable up to 435 °C and prepared with a simple method. XRD patterns revealed t...
A new, convenient and mild method for thioacetalization of heterocyclic, aromatic and aliphatic compounds catalyzed by MoCl5 or MoO2Cl2 is described. This novel method is important for the synthesis of the difficult to prepare heterocyclic thioacetals such as the pterin thioacetals and it offers...
Antimony pentafluoride (SbF5)/porous metal fluorides (PMF) were prepared by impregnating PMF with SbCl5, and then fluorinating with anhydrous hydrogen fluoride (AHF). It demonstrates excellent activity in vapor-phase catalytic fluorination and overcomes such drawbacks as hygroscopicity, corrosio...
Reaction of vanadium pentafluoride with trichloroethene, tetrabromoethene, hexachlorobenzene, and octachloronaphthalene at −20 to 50 °C gave products from fluorine addition, CFCl2CFClH, C2Br4F2, C6Cl6F6, and C10Cl8F8, respectively. The fluorine addition to pentachloropyridine and hexabromobenze...
The interaction of ClF5 with water in anhydrous hydrogen fluoride solutions was investigated by means of Raman spectroscopy. The reaction between ClF5 and H2O yields only one product (ClO2F) regardless of the temperature of the process, quantity and concentration of chemicals. ClOF3 also did not...
The potential energy constants of chlorine and bromine pentafluorides were calculated using a ubff taking into account the presence of the lone pair of elec- trons. The mean vibrational amplitudes were obtained from the vibrational spectral data. The Coriolis coupling constants and the rotationa...
In contrast to limited substitutive fluorination of aromatics with halogen fluorides such as ClF, ClF3, BrF3 and IF5, fluorination is the predominant reaction path with ClF5. Under non-catalytic liquid phase conditions, benzene was converted to fluorobenzene (54% yield) and chlorobenzene (37% yi...
A new method for the fluorination of arylsulfur chlorotetrafluorides to arylsulfur pentafluorides is described. The reaction is promoted by hydrogen fluoride generated from potassium hydrogen fluoride and trifluoroacetic acid which also serves as a solvent. The reaction is performed under mild c...
Chlorine pentafluoride has been prepared successfully in high purity by the fluorination of ClF3 at −78°C with dioxygen difluoride. The yield of ClF5 by this method is quantitative. The procedure illustrates the general utility of O2F2 in high valent fluoride synthesis.
The reaction between chlorine trifluoride and elemental fluorine was studied in order to find the optimal reaction conditions for the synthesis of chlorine pantafluoride. It has been found that nickel difluoride is a very effective catalyst for the mentioned reaction. The obtained results are ex...
A combination of analytical techniques and molecular modelling methods was used to study the influence of chloride-based supporting electrolytes on zinc electrodeposit surfaces in the zinc half-cell of zinc/bromine flow batteries. Scanning electron microscopy and X-ray diffraction analysis of zi...
Anodic dissolution of poly- and single-crystals of zinc was performed in methanol solution of lithium perchlorate by means of cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The mechanism of anodic dissolution of zinc in organic solvents occurs in two oxidation steps. I...
The electrode characteristics and selectivities of PVC-based perchlorate selective coated graphite electrode (CGE) and polymeric membrane electrode (PME) incorporating the synthesized zinc complexes of 6,7:13,14-dibenzo-2,4,9,11-tetramethyl-1,5,8,12-tetraazacyclotetradecane-1,4,6,8,11,13-hexaene...
The present article expresses synthesis, characterization and catalytic activity of pure and La doped ZnO (La-ZnO) towards thermal decomposition of Ammonium Perchlorate (AP). The catalytic materials (La-ZnO) with 0–1.00% of doped La were synthesized by simple co-precipitation method and thoroug...
We have investigated the thermal and spectroscopic properties of blends of poly(vinylpyrrolidone) (PVP) with zinc perchlorate. Analyses by differential scanning calorimetry indicates that blending with zinc perchlorate increases the values of Tg of PVP. We calculated the interaction strength of ...
Reduced graphene oxide/Zinc ferrite (rGO/ZnFe2O4) nanohybrids are successfully decorated on the surface of the rGO sheets through a simple, one-step hydrothermal method. ZnFe2O4 nanoparticles (NPs) are homogeneously anchored on the rGO sheets. The rGO/ZnFe2O4 hybrids are characterized by XRD, FT...
Binary room temperature molten electrolytes based on acetamide and zinc perchlorate have been prepared and characterized. The electrolytes are found to be highly zinc ion-conducting with very favorable physicochemical and electrochemical characteristics. Raman and infrared spectroscopic studies ...
Treatment of N-substituted 2-methyl-1H-indoles 1 with S2Cl2 and DABCO in chloroform gave the corresponding [1,2]dithiolo[4,3-b]indole-3(4H)-thiones 5 by the addition of triethylamine in high yield. 1,2-Dithiole-3-thiones 5 underwent cycloaddition with one or two DMAD equivalents to afford either...
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