The use of perchlorato(tetraphenylporphinato)manganese(III) as a reagent for the spectrophotometric determination of anions in nonaqueous solvents

Abstract

A. SCOTT HINMAN, KAREN MCGARTY, CLEMENT TANG, and BRAD J. PAVELICH. Can. J. Chem. 67, 545 (1989). Perchlorato(tetraphenylporphinato)manganese(III) (TPPMnC104) is shown to be a useful reagent for the determination of a variety of anions in nonaqueous media. The analysis is based on the displacement of coordinated perchlorate by more strongly coordinating anions as monitored spectrophotometrically. The procedure is demonstrated for the determination of tetraalkylammonium salts of nitrate, nitrite, chloride, bromide, iodide, acetate, trifluoroacetate, cyanate, and thiocyanate in acetonitrile. Relative precisions and accuracies of the order of five parts per thousand are indicated.Key words: perchlorato(tetraphenylporphinato)manganese(III), specrophotometric determination of anions, anions in nonaqueous media.A. SCOTT HINMAN, KAREN MCGARTY, CLEMENT TANG et BRAD J. PAVELICH. Can. J. Chem. 67,545 (1989). On dCmontre que le perchlorato(tCtraphCnylporphinato)manganese(III) (TPPMnC104) est un reactif utile pour dtterminer divers anions dans des milieux non-aqueux. L'analyse est bade ssu une dttermination spectrophotomCtrique du dkplacement du perchlorate par des anions qui se coordonnent plus fortement. On dCmontre I'utilitC de la mCthode par la determination du nitrate, du nitrite, du chlorure, du bromure, de l'iodure, de I'acCtate, du trifluoroacttate, du cyanate et du thiocyanate de tttraalkylamrnonium dans l'acetonitrile. On a CvaluC que les prCcisions et les exactitudes relatives sont de l'ordre de cinq parties par mille.Mots cle's : perchlorato(tCtraphCnylporphinato)manganese(III), dktermination spectrophotomCtrique des anions, anions dans des milieux non-aqueux.[Traduit par la revue] Introduction In nonaqueous solvents, a great number of common anions can be solubilized through the use of large organic countercations. Tetraalkylammonium ions are probably the most frequently employed in this regard, and a great number of tetraalkylammonium salts are commercially available. Many such salts are either deliquescent, or extremely hygroscopic, and it can thus be difficult to prepare solutions with accurately known concentrations. In this paper, we report on the use of perchlorato(tetraphenylporphinato)manganese(III) (TPPMn-C104, I) as a reagent for spectrophotometric assay of a number of anions in nonaqueous solvents.

Spectroelectrochemical Investigation of TPPMn(III/II)‐Driven Liquid | Liquid | Electrode Triple Phase Boundary Anion Transfer into 4‐(3‐Phenylpropyl)‐Pyridine: ClO4−, CO3H−, Cl−, and F−

“…The vacuum heated mesoporous ITO thin film electrode will be used widely for the elucidation of mechanistic aspects of liquid j liquid ion transfer spectroelectrochemistry. In the future, this type of electrode could also be useful as a spectroelectrochemical sensor element (compare for example with the TPPMn-(III) perchlorate sensor [23]) based on chromogenic ion transfer reactions.…”

Interfacial Hydrolysis in the μ-oxo Dimer Formation of Tetraphenylporphinatomanganese(III) in the Toluene/Water System

“…14 A high affinity for these anions of Mn(TPP) in a nonaqueous solution had also been examined. 5 Therefore, the formation of the µ-oxo dimer can be prevented by the coordination of the above anions.…”

“…A photometric application of tetraphenylporphinato manganese (Mn(TPP)) as an ionophore in a nonaqueous medium has also been investigated. 5 Recently, catalytic reactions with a manganese porphyrin in organic/aqueous two-phase systems 6 and its structure in Nafion 7 including the interfaces have been examined. The need for a further research on the behavior of the manganese porphyrin at the liquid interface has been pointed out.…”