The Reactions of 2,10‐Disubstituted Phenothiazines with Metal Ions

Abstract

Organic chemistryOrganic chemistry Z 0200The Reactions of 2,10-Disubstituted Phenothiazines with Metal Ions -[44 refs.]. -(PUZANOWSKA-TARASIEWICZ, H.; KARPINSKA, J.; KOJLO, A.; STARCZEWSKA, B.; WOLYNIEC, E.; Chem. Anal. (Warsaw) 48 (2003) 2, 181-187; Inst. Chem., Univ. Bialystok, PL-15-443 Bialystok, Pol.; Eng.) -Lindner 01-260

Efficient Oxidizing Agents for Determination of 2,10-Disubstituted Phenothiazines

“…This property was the basis for the development of a number of spectrophotometric methods for the determination of phenothiazines. 14 Phenothiazines were also used as spectrophotometric reagents 2,8 and indicators in various redox titrations with K2Cr2O7, Ce(SO4)2, NH4VO3, KBrO3. 1,3,15 In the presented paper the applications of some oxidizing agents for the spectrophotometric and flow-injection determination of 2,10-disubstituted phenothiazines have been described.…”

“…with the formation of colored oxidation products. 2 According to the literature, 16 the oxidation reactions of 2,10-disubstituted phenothiazines, are generally represented as follows:…”

“…[35][36][37] hexacyanoferrate(III), 20,38 nitrosoferricyanide, 39 potassium persulfate, 40 hydrogen peroxide, 41 sodium cobaltnitrite, 42 sulfuric acid, 43 chloramine T, 44 p-benzoquinone 45 and N-bromosuccinimide 46,47 for phenothiazines determination. According to Puzanowska-Tarasiewicz and Karpinska, 20 potassium dichromate cannot be used for the spectrophotometric determination of 2,10-disubstituted phenothiazines.…”

Use of an Oxidation Reaction for the Quantitative Determination of Albendazole with Chloramine-T and Acid Dyes

“…The versatility of Chloramine-T as an analytical reagent can be gauged by its applications in the titrimetric [27][28][29][30][31][32][33] and spectrophotometric [34][35][36][37][38][39][40] determination of many oragnic compounds of therapeutic importance. The use depends mainly on its ability to effect the oxidation of diverse functional groups.…”

Analytical Application of the Binary and Ternary Complexes of 2,10-Disubstituted Phenothiazines

“…], platinum metals [e.g., Pt(IV), Rh(IV), Ru(III), Pd(II)], thiocyanate or halide complexes of metals, and some organic substances [e.g., picric acid, alizarin S, dipicrylamine etc.] (Kojło et al 2001;Puzanowska-Tarasiewicz et al 1998;Tarasiewicz et al 1999).…”