The present paper reports the determination of the tri-amine N-(3-aminopropyl)-N-dodecyl-1,3-propanediamine (TA) present in a raw material called LONZABAC used to formulate various, widely used commercial biocides. The active principle, TA, is present in LONZABAC together with other molecules at...

Excess phosphate discharge into water bodies can lead to severe eutrophication. Adsorption has been considered as one of the most effective approaches for phosphate removal and recovery. A new aminopropyl-functionalized mesoporous carbon CMK-3 (denoted as APTMS-CMK-3) was prepared and the materi...

A new organic–inorganic material, (C6H20N3)2[Cr2O7]3 has been synthesized by the solvent evaporation method and characterized by single crystal X-ray diffraction, infrared absorption, optical absorption, thermal analysis and dielectric studies. The crystal structure consists of two N-(3-aminopr...

Naturally occurring polyamines like Putrescine, Spermidine, and Spermine are polycations which bind to the DNA, hence stabilizing it and promoting the essential cellular processes. Many synthetic polyamine analogues have been synthesized in the past few years, which have shown cytotoxic effects ...

An efficient process for the synthesis of tetrahydrobenzo[b]pyrans derivatives was attained via the reaction of dimedone, various aldehydes and malononnitrile using [4,4′-Bipyridine]-1,1′-diium tricyanomethanide {[4,4′-BPyH][C(CN)3]2} as a green mild nano structure molten salt catalyst under ...

The present study focused on the synthesis of high purity oxalate esters: bis(2,4,6-trichlorophenyl) oxalate (TCPO) and bis(2,4,5-trichloro-6-carbobutoxyphenyl) oxalate (TCCBPO), and further on their incorporation into potentially applicative polymer composites. The organic compounds were charac...

The synthesis of nine GPE* analogues, wherein the α-carboxylic acid group of glutamic acid has been modified, is described by coupling readily accessible N-benzyloxycarbonyl-glycyl-l-proline 2 with various analogues of glutamic acid. Pharmacological evaluation of the novel compounds was underta...

The synthesis of eight GPE* analogues, wherein the γ-carboxylic moiety of the glutamic residue has been modified, is described by coupling readily accessible N-benzyloxycarbonyl-glycyl-l-proline with various analogues of glutamic acid. Pharmacological evaluation of the novel compounds was under...

Seven diterpenoids have been isolated from Isodon japonicus Hara. Isodonal, trichodonin and epinodosin are formulated by chemical and spectroscopic evidence as the structures 2, 4 and 5 Antimicrobial activity has been tested.

A stereoselective synthesis and C–3 functionalization of a long series of novel hybrid 4-(thiophenyl)pyrazolyl-β-lactams have been carried out. The divergent substrate scope and mechanistic insights were examined to delineate the generality of reaction that favored trans-β-lactams 4a-q almost...

Reaction of the laterally lithiated (S)-4-isopropyl-2-(2-methoxy-6-methylphenyl)oxazoline with p-tolualdehyde gave an inseparable mixture of the addition products in low diastereoselectivity. However, the (S,S)-product cyclized to the corresponding 3,4-dihydroisocoumarin faster than the (S,R)-pr...

19F NMR spectra of aqueous solutions containing the 48TiF62−−49TiF62− and 74GeF62−−73GeF62− ions and 45Sc NMR spectra of an aqueous solution containing 45ScF63− ion are reported for a range of temperatures. Computer fitting of the observed lineshapes shows that both quadrupole-induced transition...

Dielectric relaxations of A2MCl6 compounds, with A = NH4, ND4, K, Rb, Cs and M = Sn, Pt, Ir are attributed to the hydroxyls in MCl5OH2− groups which normally constitute ca 2% of the anions present in the material unless it has crystallized in strongly acid conditions. Hydroxyls reorientate by 90...

The thermal decompositions of the complexes (N2H6)2(GeF6F2 and (N2H5)2GeF6 have been investigated by TG, DTG and DTA measurements. The decomposition of these compounds proceeded through intermediates which were isolated and characterized by chemical analysis and vibrational spectroscopy.

The molar heat capacity of ammonium hexafluorogermanate (NH4)2GeF6was measured fromT≈ 5 K toT= 326 K by adiabatic calorimetry. Our results show that neither a transition nor the metastability that sometimes occurs in R2MX6compounds was present. From our results, the standard molar entropy Δ0TS...

Sodium borohydride NaBH4 (SB) readily and completely reacts with four equivalents of propylene glycol HOCH2CH(OH)CH3 (PG), resulting in the liberation of four equivalents of H2 at temperatures starting from 25 °C. Alcoholysis (or glycolysis) takes place. The system SB-4PG is then an attractive ...

The present study aims at investigating, for the first time, a quinary mixture of light-metals borohydrides. The goal is to design combinations of borohydrides with multiple cations in equimolar ratio, following the concept of high entropy alloys. The equimolar composition of the LiBH4NaBH4KBH4M...

Aluminum borohydride (Al(BH4)3) is an example of a promising hydrogen storage material with exceptional hydrogen densities by weight and volume and a low hydrogen desorption temperature. But, unfortunately, its production of diborane (B2H6) gases upon heating to release the hydrogen restricts it...

A new method to produce high purity hydrogen using reactions of aluminum and sodium borohydride with aqueous alkaline solutions is described. This process mainly consumes water and aluminum (or its alloys) which are cheaper raw materials than the borohydride. As a consequence, this process could...

Synergistic effect of sodium borohydride (NaBH4) mixed with waste aluminum in hydrolytic system were investigated to improve the hydrogen generation (HG) efficiency. The alkaline aqueous originated from NaBH4 hydrolysis impels the passive aluminum hydroxide film of Al surface to be dissolved, th...