Palladium nanoparticles have been electrochemically supported on zirconium oxide nanostructured powders and all the nanomaterials have been characterized by several analytical techniques. The Pd/ZrO(2) nanocatalyst is demonstrated to be a very efficient catalyst in Heck, Ullmann, and Suzuki reactions of aryl halides in water. The catalyst efficiency is attributed to the stabilization of Pd nano...

The reaction between tetra-ethyl-ammonium hydroxide and 2,2'-dithio-benzoic acid yields the title compound, 3C(8)H(20)N·H(C(6)H(4)O(5)S(2))(2) (3-), the trianion of which comprises two 2-(sulfato-sulfan-yl)benzoate dianions linked across a center of inversion by an acid H atom. One of the cations is disordered about another center of inversion.

A convenient one-pot reaction was conducted by mixing bromoacetophenone, a functionalized α,β-unsaturated ketone and potassium hydroxide in tetrahydrofuran at room temperature, ammonium acetate was added and heated to reflux, resulting in four chemical bonds forming from easily accessible substrates. This process provides a flexible and rapid synthetic route for the construction of polysubstitu...

Lysolecithin and sphingomyelin may be readily separated from other phospholipids on thin-layer plates impregnated with silver nitrate using the solvent system chloroform-methanol-concentrated ammonium hydroxide 65:35:8. Quantitation is carried out by determining the phosphorus content of the developed bands. The minimum amount of phospholipid that can be quantitatively determined is that which ...

Three phase partitioning, a method generally used for protein separation, has been evaluated for extraction of oil from soybean. 82% oil was extracted within 1 h using this process which required simultaneous addition of t-butanol (1:1, v/v) and 30% ammonium sulphate to the soybean slurry.

The title ionic compound, C16H36N(+)·C10H20B10N3O3(-), consists of a tetra-butyl-ammonium cation and a closo-deca-borate cluster anion, which is bound to the substituted 2,3-dihydro-1,2,4-oxadiazole ring through a B-N bond [1.540 (2) Å]. The distances between connected B atoms in the deca-borate cluster range from 1.689 (2) to 1.844 (2) Å. The 2,3-dihydro-1,2,4-oxadiazole ring adopts an envelop...

p-tert-Butylcalix[8]arene-octaacetic acid octaethyl ester and calix[8]arene-octaacetic acid octaethyl ester well recognized 2-phenylethylamine and phenylalanine methyl ester compared with the corresponding calix[6]arene derivatives. Moreover, the calix[8]arene derivatives, especially one having tert-butyl groups, gave better selectivity against biologically active amines having a complicated st...

Nanostructured ZnO thin films were prepared by sol-gel dip coating technique. Zinc acetate and ammonium hydroxide were used as precursors and ethanol was as solvent. Ammonium hydroxide (NH4OH) solution was added drop-wise under vigorous stirring to obtain the sol-gel of different pH (varying from 6.9 to 7.2). ZnO thin films were obtained by dipping the glass substrates for few seconds and then ...