Selected rhodanine‐3‐carboxylic acids derivatives were synthesized to determine the influence of the structure and the length of the linker between the carboxyl group and the nitrogen atom (N‐3) in the 2‐thioxo‐4‐thiazolidinone ring on their activity, monitored via interactions with human ...
Rhodanines (2-thio-4-oxothiazolidines) are synthetic small molecular weight organic molecules with diverse applications in biochemistry, medicinal chemistry, photochemistry, coordination chemistry and industry. The X-ray crystal structure determination of two rhodanine derivatives, namely (I), 3...
One pot condensation of malonic acid dihydrazide (MADH) in the presence of metal salts (CuCl2·H2O and ZnCl2) with melamine (TAT) has been achieved. The solids Cu(MADH)2Cl2·2TAT·9H2O and Zn(MADH)2Cl2·TAT·1/2H2O thus obtained were characterized by elemental analysis, FAB mass, i.r., n.m.r., u...
The aggregation behavior of various zwitterionic helper phospholipids, such as DOPE, DOPC, and DPPC, in combination with two new cationic lipids, namely TH4 and OH4 (second generation of malonic acid diamides) in different molar ratios was studied with regard to their physical–chemical properti...
The reaction of VOSO4 with K2cbdc (cbdc2– is cyclobutane‐1,1‐dicarboxylate anion) and Ln(NO3)3 (Ln = La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Y, Er, Tm, Yb, Lu) yielded 17 novel heterometallic LnIII‐VIV compounds comprising stable bis‐chelate units {VIVO(cbdc)2(H2O)}. Three structural types ...
The Cl‐atom‐initiated oxidation of two esters, ethyl formate [HC(O)OCH2CH3] and ethyl acetate [CH3C(O)OCH2CH3], has been studied at pressures close to 1 atm as a function of temperature (249–325 K) and O2 partial pressure (50–700 Torr), using an environmental chamber technique. In both cases...
Experimental densities, dynamic viscosities, speeds of sound and relative permittivities for ten binary mixtures of methyl acetate+, ethyl acetate+, butyl acetate+, isoamyl acetate+, methyl propionate+, ethyl propionate+, ethyl butyrate+, methyl methacrylate+, ethyl methacrylate+, and butyl meth...
The acylation of thiophene by butyryl chloride has been studied in the liquid phase in the presence of 12 catalysts: HZSM-5, H-mordenite, and HY (ultrastable Y) with various framework Si/Al ratios, various numbers of Brønsted and Lewis sites, and various amounts of nonframework aluminum. The num...
The pure rotational spectrum of butyryl chloride has been recorded between 8 and 16GHz using a chirped pulse, Fourier transform microwave spectrometer. The transitions recorded were assigned to two different conformers which have previously been designated syn-gauche and syn-anti. Quantum chemic...
Electrochemical perfluorination (ECPF) of the title compounds containing primary, secondary and tertiary carbon atoms was carried out in anhydrous hydrofluoric acid (AHF). Detailed analysis of major and minor products suggest that carbon chain isomerisation involving cyclo-propane intermediate i...
Age-related differences in the acute neurotoxicity of cholinesterase (ChE)-inhibiting pesticides have been well-studied for a few organophosphates, but not for many others. In this study, we directly compared dose-responses using brain and red blood cell (RBC) ChE measurements, along with motor ...
A simple, sensitive and rapid differential pulse polarographic method has been developed for the quantitative determination of organophosphorus pesticides such as dicrotophos, crotoxyphos and chlorfenvinphos in agricultural formulations in universal buffers of a pH range 2.0–12.0. The sample is...
Dicrotophos is a systemic insecticide with a wide range of applications. We investigated the genotoxicity of dicrotophos using the Ames test, the chromosome aberration test in CHO‐K1 cells, and the comet assay in the Hep G2 cells, while this chemicals' toxicity to both the cell lines was evalua...
The kinetics of liquid-liquid extraction o aqueous Co(II) by toluenic NaD2EHP and the structural and aggregative properties of the organic phase O, a middle surfactant-rich phase B and the aqueous phase W were studied for the non-stirred system H2O/toluene/NaD2EHP/CoBr2/KBr. Interfacial turbulen...
The microstructure of water solubilized in H 2 O/surfactant/n-heptane ternary systems has been investigated by employing 1 H-NMR and FT-IR spectroscopic techniques. Two reverse micellar systems were prepared and studied, i.e., sodium bis(2-ethylhexyl) sulfosuccinate in n-heptane ...
Conductance behaviors of reverse micelles/microemulsions have been investigated by means of electrical conductometry, with em-phasis on the influences of water content, bis(2-ethylhexyl) phos-phoric acid (HDEHP) content, and temperature. Two systems were prepared and studied, i.e., sodium bis(2-...
Equations are given for calculation of the stoichiometric (molality scale) dissociation constants, K m , of weak acids in dilute aqueous electrolyte solutions at 298.15 K from the thermodynamic dissociation constant, K a , of the acid and the ionic strength, I m , of the ...
Monodisperse AgPd alloy nanoparticles are synthesized by co-reduction of silver nitrate and palladium acetylacetonate in 1-octadecene and oleic acid using tert-butylamine borane as the reducing agent at 60°C. Thanks to the narrow size distribution of the AgPd alloy NPs and the synergistic effec...
Solubility of aqueous solutions containing lithium bromide + lithium chloride and lithium bromide + sodium formate were measured (LiBr/NaHCO2 = 2 and LiBr/LiCl = 2 by mass ratio) at different temperatures. Visual polythermal method was used in the temperature range of (283.15–340.15) K and mass...
The influence of different silane/dentin adhesives on the microtensile bond strengths of a hybrid composite to sodium ethoxide-etched quartz fiber posts was investigated. A prehydrolyzed silane was applied without an adhesive and compared to two-component systems in which hydrolysis of the silan...
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