Topic
Polarography
About: Polarography is a research topic. Over the lifetime, 4772 publications have been published within this topic receiving 75478 citations.
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01 Jun 1980TL;DR: In this article, the degree and directions of interference is critically dependent on the oxygen availability in the sample at the time of irradiation and on the nature of organic compounds in a sample.
Abstract: Methods for the determination of iodide, and ‘organo’-iodine in seawater are described. Using differential pulse polarography, iodate is determined directly, iodide after oxidation to iodate by chlorine water, and ‘organo’-iodine after u.v.-iradiation followed by treatment with chlorine water. Used alone, u.v.-irradiation caused major interferences that were positive when peroxide was formed or negative when reaction of iodate with organic compounds in the sample solution was facilitated. The degree and directions of interference is critically dependent on oxygen availability in the sample at the time of irradiation and on the nature of organic compounds in the sample.
24 citations
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24 citations
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TL;DR: In this paper, the potential structures of four nitrogen-donor macrocyclic complexes are discussed in terms of their visible, infrared and e.s.r. spectra, as well as on the basis of data obtained from conventional polarography and cyclic voltammetry.
Abstract: Copper(II) complexes of the types Cu(CR)(ClO4)2-.H2O, [Cu(CR)X](ClO4).nH2O (where X = Cl, Br, I and n = 1; X = NCS, n = 0), [Cu(CRH)](ClO4)2.H2O and [Cu(CRH)X](ClO4) (where X = Cl, Br, I) have been prepared. The ligands CR and CRH are the related four nitrogen-donor macrocycles 2,12-dimethyl-3,7,11,17-tetraazabicyclo [11.3.1]heptadeca-1(17), 2, 11, 13, 15-pentaene and meso-2, 12-dimethyl-3,7,11,17-tetraazabicyclo[11.3.1]heptadeca-1(17), 13,15-triene, respectively. All the compounds have the normal magnetic moments expected for Cu(II) complexes with S = ½. Conductance studies in methanol show that the halo-perchlorate complexes are formally five coordinate. The probable structures of the complexes in both the solid and solution are discussed in terms of their visible, infrared and e.s.r. spectra, as well as on the basis of data obtained from conventional polarography and cyclic voltammetry.
24 citations
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TL;DR: In this article, the formal kinetics of electrochemical cyclization reactions are discussed in the cases where the cyclization steps follow the electron-transfer steps, i.e., when they are not preceded by any irreversible chemical steps.
24 citations