Borohydrides with high hydrogen content are being extensively studied as potential hydrogen storage systems placing particular emphasis on upturning their unfavourable kinetic and thermodynamic properties which give rise to significantly high dehydrogenation temperatures and slow hydrogen releas...

The effect of Fe content in electroless-deposited CoNi-Fex-P alloy catalysts (x = 5.5–11.8 at.%) from the hydrolysis of NaBH4 is investigated in alkaline sodium borohydride solution. The electroless-deposited CoNiFe5.5-P and CoNiFe7.6-P alloy catalysts are composed of flake-like micron particle...

Calcium borohydride hydrazinates, Ca(BH4)2-nN2H4 (n = 4/3, 1, 2, 3) have been synthesized successfully. In particular, Ca(BH4)2•2N2H4 crystallizes in a monoclinic space group of C2/m with the lattice parameters of a = 10.1385 Å, b = 8.6342 Å, c = 4.6384 Å, β = 106.467°. It can release 5.9 equi...

The aim of this study was to investigate dehydrogenation of calcium borohydride (Ca(BH4)2) in the presence of a catalyst. Co ion-loaded poly(acrylamide-co-acrylic acid) (p(AAm-co-AAc)-Co) hydrogel was taken as a catalyst for this dehydrogenation procedure. Dehydrogenation reactions were performe...

Chemical, optical and X-ray powder data on coexisting anthophyllite and hornblende in an amphibolite are presented. Some chemical features of amphibole pairs are briefly discussed.

Early cytogenetic action of oral exposure to UICC anthophyllite, an amphibole type of asbestos, was studied in Fischer-344 rats. The animals were gavaged with a suspension of untreated fibres (50 mg/kg) and fibres which had been allowed to adsorb benzo[a]pyrene molecules from aqueous solutions o...

Dissolution experiments of diopside and anthophyllite were conducted in continuously stirred flow-through reactors at temperatures of 25° and 90°C at acid pH. Stoichiometric steady state was reached at ∼2700 h (at 25°) or ∼1000 h (90°C). Specific surface area significantly increased after ...

The effect of pH on the kinetics of tremolite and anthophyllite dissolution was investigated at 25 °C in batch reactors over the pH range of 1–13.5, in inorganic buffered solutions. Dissolution rates were obtained based on the release of Si and Mg. Results obtained in this study show different...

Spinel-anthophyllite rocks that may be classified as ultrabasic low-Ca spinel amphibolites have been first discovered in the Kokchetav collision zone (northern Kazakhstan). They outcrop 2 km west of Enbek-Berlyk Village among schists and quartzites and are closely associated with spinel harzburg...

Horner–Wadsworth–Emmons olefination of ring-fluorinated N-trityl-imidazole carboxaldehydes with dialkyphosphonoacetic acid esters produced ring-fluorinated imidazolyl-E- and Z-acrylate esters. Stereochemistry was controlled by choice of phoshonate. Acid catalyzed removal of trityl followed by ...

Photoresponsive viologen units have been widely used to impart metal-organic materials with photochromic properties. Herein, four novel one-dimensional (1D) double chain-like coordination polymers (CPs) {[Ni0.5(CBbpy) (H2O)]Br·H2O}n (1), {[Co0.5(CBbpy) (H2O)]Br·H2O}n (2), {[Cu(CBbpy)2(H2O)]Br2...

The synthesis of benzothiazolium salt, N-(carboxyethyl)-2-methylbenzothiazolium bromide has been carried out by condensation of 2-methylbenzothiazole and 3-bromopropionic acid in solvent free conditions. The desired compound was obtained in excellent yield and its structural characterization was...

1,2,3,4,7,7-Hexafluorobicyclo[2.2.1]heptadiene (1) and 2,3-bis(trimethyltin)-1,4,5,6,7,7-hexafluorobicyclo[2.2.1]hepta-2,5-diene (2) react with [M(Ph3P)4] (M = Pt, Pd) to afford air-stable adducts. 2,3-Dichloro-1,4,5,6,7,7-hexafluorobicyclo[2.2.1]hepta-2,5-diene (3) gives only [PtCl2(PPh3)2] wit...

The corrosion inhibition of mild steel in 1 mol·L− 1 hydrochloric acid by N-methyl-2-(2-nitrobenzylidene) hydrazine carbothioamide (MNBHC) was studied using weight loss and electrochemical studies. Results obtained indicate that the inhibitor is effective in hydrochloric acid medium and the eff...

2,1-Benzisoxazoles, also called anthranils, are one of the two types of aromatic bicyclic heterocycles having a benzene ring fused with an isoxazole, which are particularly recognized as valuable intermediates in organic synthesis. Nevertheless several methods can be found in the literature to p...

Assembly of [{Zn2(μ-OAc)4(1)}n] from reaction of zinc(II) acetate and 4′-(4-biphenylyl)-4,2′:6′,4″-terpyridine (1) using 1:1, 2:1 and 1:2 ratios of Zn(II): 1 is independent of the conditions tested. Free ligand 1 is a rare example of a compound that crystallizes with five independent molecu...

Seven novel diamidino 2,5-bis(aryl)thiazoles (5a–g) were synthesized and evaluated against Trypanosoma brucei rhodensiense (T. b. r.) and Plasmodium falciparum (P. f.). The diamidines were obtained directly from the corresponding bis-nitriles (4a–g) by the action of lithium bis(trimethylsilyl)...

A new bis-hydrazone derivative of 2,5-furandicarboxaldehyde (R1) was designed with perfect hetero-atomic cavity and synthesized for sensing of heavy metal ion via FRET mechanism. Selective sensing ability of R1 as a ‘turn on’ fluorescent chemosensor for Hg2+ with rapid and very sharp visual co...

N-((5-chloropyridin-2-yl)carbamothioyl)furan-2-carboxamide (HL: C11H8ClN3O2S) and its Co(II), Ni(II) and Cu(II) complexes have been synthesized and characterized by elemental analysis, FT-IR,1H NMR and HR-MS methods. The HL was characterized by single crystal X-ray diffraction technique. It crys...

A series of novel 2,5-bis(3′-indolyl)furans and 3,5-bis(3′-indolyl)isoxazoles were synthesized as antitumor agents. The antiproliferative activity was evaluated in vitro toward diverse human tumor cell lines. Initially 5 isoxazoles and 3 furan derivatives were tested against a panel of 10 huma...