A new ternary borate, RbCdB3O6 has been synthesized by solid-state reaction and its structure was determined by single-crystal X-ray diffraction. It crystallizes in the monoclinic space group C2/c, and in its crystal structure, RbO10 polyhedra and B3O6 rings comprise a three dimensional (3D) fra...

Thermoluminescence (TL) characteristics of X-ray irradiated pure and doped with four different rare earth ions (viz., Pr3+, Nd3+, Sm3+ and Eu3+) Li2O–Cdo–B2O3 glasses have been studied in the temperature range 303–573 K; the pure glass has exhibited single TL peak at 466 K. When this glass is...

Neodymium doped cadmium alkali borate glasses having composition 20CdO20R2O59.5H3BO30.5Nd2O3; (R = Li, Na and K) were prepared by conventional melt-quenching technique. The amorphous nature of the glasses was confirmed by X-ray diffraction studies. The physical properties such as density, refrac...

In this work, we study the relationship between the optical and magnetic properties for the irradiated and unirradiated V2O5-doped cadmium borate glasses and examined their optical band energy that has compromise of non-bridging oxygen (NBO) and bridging oxygen (BO), V3+, V4+ and V5+, and BO3 un...

Combined optical and infrared absorption spectra of V2O5-doped cadmium borate glasses were investigated before and after gamma irradiation with a dose of 8 Mrad (=8 × 104 Gy). The undoped base cadmium borate glass reveals a spectrum consisting of strong charge transfer UV absorption bands which...

Neodymium doped cadmium sodium borate glasses having composition xCdO-(40-x) Na2CO3-59.5H3BO3-0.5Nd2O3; x = 10, 20 and 30 mol% were prepared by conventional melt-quenching technique. X-ray diffraction studies confirmed the amorphous nature of the prepared glasses. Conventional methods were used ...

Polycrystalline powder samples of cadmium tetra borate were synthesized by a simple solid state sintering technique and gamma irradiated sample showed a simple Thermoluminescence (TL) glow peak around 460 K. The TL kinetic parameters of gamma irradiated phosphor were determined by initial rise (...

Cadmium borate compound prepared through wet chemical reaction from the starting chemicals followed by high temperature solid state synthesis below the melting point to get the final TL phosphor powder. Phase purity and bond details of cadmium borate crystals are characterized using X-ray diffra...

Here, we used circular dichroism (CD) and fluorescence microscopy (FM) to examine the interactions of a series of antitumor-active tetrazolato-bridged dinuclear platinum(II) complexes, [{cis-Pt(NH3)2}2(μ-OH)(μ-5-R-tetrazolato-N2,N3)]n + (R = CH3 (1), C6H5 (2), CH2COOCH2CH3 (3), CH2COO− (4), n ...

[Cr(edda or eddp)(NN)]-type complexes (edda = ethylenediamine-N,N′-diacetate, eddp = ethylenediamine-N,N′-dipropionate; NN = 1,2-ethanediamine (en), 2,2′-bipyridine (bpy) and 1,10-phenanthroline (phen)) were formed with stereoselectivity. These complexes were characterized by UV–Vis and IR a...

A mass-spectrometric determination of the sublimation pressure diagram of α-(trifluoromethyl)-lactic acid as a function of its enantiomeric composition at 293 K shows that the racemic crystals have a 38±15% higher volatility than the enantiomerically pure crystals and the sublimation eutectic ...

Here we describe catalytic asymmetric synthesis of α-(trifluoromethyl)benzylamine (1) via biomimetic transamination using chiral base. Imine 4 was isomerized to Schiff base 5 using 50 mol.% of cinchonidine derivatives as a catalyst in chloroform, methanol or acetonitrile. In the case of cinchon...

A new solid acid/superacid catalyzed microwave assisted synthesis of trifluoromethyl-imines is described. Various α,α,α-trifluoromethylketones react readily with primary amines to produce the corresponding imines. Two different strategies have been employed; one is the application of microwav...

Several ω-CF3-substituted α-amino acids have been prepared in optically pure form via two complementary approaches. Racemic fluorinated derivatives of 2-aminobutanoic acid, norvaline and norleucine were chemically deracemized by complexation with a Ni(II) salt and a chiral reagent derived from...

Aseries of 4-amino-5-chloro-2-methoxy-N-(1-substituted piperidin-4-ylmethyl)benzamides was synthesized as novel gastroprokinetic agents. The affinity of these compounds for the 5-hydroxytryptamine 4 (5-HT4) receptor was evaluated. Among these compounds, 4-amino-5-chloro-2-methoxy-N-[1-[5-(1-meth...

A series of 4-amino-5-chloro-2-methoxy-N-(piperidin-4-ylmethyl)benzamide derivatives bearing an aralkylamino, alkylamino, benzoyl or phenylsulfonyl group at its side chain part at the 1-position on the piperidine ring was synthesized. They were evaluated for serotonin 4 (5-HT4) receptor agonist ...

It is thought that selective 5-HT4 receptor agonists—such as 4-amino-5-chloro-2-methoxy-N-[1-(6-oxo-6-phenylhexyl)piperidin-4-ylmethyl]benzamide (2)—have the ability to enhance both upper and lower gastrointestinal motility without any significant adverse effects.Modification of 2 was performe...

In this study, a signal peptide of AlkL was replaced with other signal peptides to improve the soluble expression and thereby facilitate the transport of dodecanoic acid methyl ester (DAME) substrate into the E. coli. Consequently, AlkL with signal peptide FadL (AlkLf) showed higher transport ac...

Despite the importance of cyanide and of metal–cyanide complexes in gold hydrometallurgy, and the need for reliable thermodynamic data for modelling gold solution chemistry, no comprehensive critical overview of the thermodynamics of hydrogen/cyanide and metal/cyanide complex formation has appe...

RésuméL'acidification de solutions aqueuses de tétracyanocuprate(I) de potassium K3 Cu(CN)4 montre par spectroscopie d'absorption u.v. que les espèces se formant successivement à pH neutre puis acide sont Cu(CN)32−, Cu(CN)2− et Cu+: des mesures protométriques associées aux résu...