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• W2054631316 abstract "Mercury rising! A new polysulfur-nitrogen heterocycle is described as a new selective chromogenic probe for the naked-eye detection of mercury(II), by a dramatic change of color from purple to blue-violet in a HEPES-buffered water/acetonitrile 1:1 mixture, with sub-micromolar sensitivity. The chemical probe also changes from purple to red in the presence of cyanide. The synthesis of some new polysulfur-nitrogen heterocycles by cycloaddition of an ynamine to bisdithiolothiazine ketothiones or dithiones is described and the interconversion between regioisomers is studied by DFT calculations, showing that the double bond isomerizes at room temperature. This series is a new selective and sensitive chromogenic probe for the naked-eye detection of mercury(II) cation and cyanide anion in buffered (HEPES 0.05 M, pH 7.14) water/acetonitrile 1:1 mixture, with sub-micromolar sensitivity, and constitutes the first example of a new class of colorimetric chemical probes for Hg2+ and CN−. Se describe la síntesis de nuevos heterociclos poliazufre-nitrógeno mediante la cicloadición de una inamina a bisditiolotiazina cetotionas o ditionas; la interconversión entre regioisómeros se estudia mediante cálculos DFT, mostrando que el doble enlace isomeriza a temperatura ambiente. Se describe el mejor término de estas series como una nueva sonda cromogénica selectiva para la detección a simple vista de catión mercurio(II) y de anión cianuro en mezcla tamponada de agua-acetonitrilo 1:1 (HEPES 0.05 M, pH 7.14), con sensibilidad sub-micromolar, que constituye el primer ejemplo de una nueva clase de sondas químicas colorimétricas para Hg2+ y CN−. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article." @default.
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• W2054631316 date "2010-06-08" @default.
• W2054631316 modified "2023-10-18" @default.
• W2054631316 title "A Selective Chromogenic Probe for Mercury(II) and Cyanide in Aqueous Buffered Solution from a Cycloaddition Reaction of an Ynamine to Polycyclic Dithiolethiones" @default.
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• W2054631316 doi "https://doi.org/10.1002/asia.201000063" @default.
• W2054631316 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/20533432" @default.
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