A simple and sensitive spectrophotometric method was developed for the determination of acetazolamide (ACM) in pure form and pharmaceutical preparations. The proposed method is based on the complex formation of acetazolamide with Palladium (II) chloride in acetate buffer pH5.4 and measuring the absorbance at 308 nm. The absorbance- concentration plot was rectilinear over the concentration range...

CLIN. CHEM. 19/9, 1082-1084 (1973) 11. Windham, R. L., Simple device for compensation of broadband absorption interference in flameless atomic absorption determination of mercury. Anal. Chem. 44, 1334 (1972). 12. Beamish, F. E., and Van Loon, J. C.,Recent Advances in the Analytical Chemistry of the Noble Metals. Pergamon Press, New York, N. Y., 1972. 13. Kallmann, S., and Hobart, E. W., The det...

This study focus on the preparation of two supports including activated carbon derived from medlar and Palladium nanoparticles loaded on activated carbon (Pd-NP-AC). Subsequently, both adsorbent modified with a novel Schiff base chelating agent and their potential applicability for determination of trace amounts of metal ions from aqueous solution has been investigated. The method is based on c...

Bu çalışmada, Pd2+ iyonlarının iyodür (I-) ile PdI42- kompleksi oluşturarak, heksadesiltrimetilamonyum bromür (CTAB) yardımıyla kloroform fazına taşındığı ve spektrofotometre tayin edildiği bir mikroekstraksiyon yöntemi geliştirilmiştir. Ekstraksiyon verimliliğini etkileyen, pH, konsantrasyonu, potasyum hacmi yabancı iyon etkisi gibi deneysel parametreler optimize edilmiştir. Optimize edilen şa...

A new spectrophotometric method for the determination of palladium with Pyrogallol Red is described. Its high sensitivity is dependent on the presence of micellar system of 1-carbethoxypentadecyltrimethylammonium bromide, which leads to the maximum colour formation in acid solutions (pH 5.5) in a shorter time interval than in the absence of tenside. The ternary pal­ ladium-dye-cation-active ten...

The total synthesis of the recently reported marine natural product colombiasin A (1) and determination of its absolute configuration are reported. Two Diels-Alder cycloadditions and a palladium-catalyzed rearrangement are employed as key reactions to construct the tetracyclic framework of the target molecule. The enantioselective synthesis of colombiasin A utilizes Mikami's [(S)-BINOL-TiCl2] c...

Palladium(II) complexes containing phosphine donor ligands derived from naphthyl(diphenyl)phosphine were synthesized and characterized by NMR and elemental analysis. The complexes were studied as catalyst precursors in the methoxycarbonylation reaction of several aromatic and aliphatic olefins under mild conditions. The catalysts reported high chemoselectivities (over 96%) and regioselectivitie...

this study focus on the preparation of two supports including activated carbon derived from medlar and palladium nanoparticles loaded on activated carbon (pd-np-ac). subsequently, both adsorbent modified with a novel schiff base chelating agent and their potential applicability for determination of trace amounts of metal ions from aqueous solution has been investigated. the method is based on c...