Video Experimental Relacionado

Updated: Apr 27, 2026

A Sensitive Visual Method for the Detection of Hydrogen Sulfide Producing Bacteria

A Sensitive Visual Method for the Detection of Hydrogen Sulfide Producing Bacteria

Published on: June 27, 2022

Comprender el almacenamiento de sulfuro de hidrógeno: condiciones de sondeo para la liberación de sulfuro de los

T Spencer Bailey¹, Lev N Zakharov, Michael D Pluth

¹Department of Chemistry and Biochemistry, Institute of Molecular Biology, Material Science Institute, 1253 University of Oregon , Eugene, Oregon 97403, United States.

Journal of the American Chemical Society

|July 11, 2014

Resumen

Este estudio sintetiza y caracteriza los hidrodisulfuros, cruciales para el almacenamiento y la señalización del sulfuro de hidrógeno (H2S). Estos compuestos liberan H2S cuando se reducen y pueden participar en las vías de transsulfuración.

Área de la Ciencia:

La bioquímica es la bioquímica.
Biología Química Biología química.
Química orgánica es la química orgánica.

Sus antecedentes:

El sulfuro de hidrógeno (H2S) es una molécula de señalización biológica vital.
El H2S puede ser oxidado para formar piscinas de sulfuro de sulfuro, incluidos los hidrodisulfuros.
Las propiedades y la reactividad de los hidrodisulfuros son poco conocidas.

Objetivo del estudio:

Para sintetizar y caracterizar un hidrodisulfuro de molécula pequeña.
Para investigar la reactividad química de los hidrodisulfuros.
Para aclarar el papel de los hidrodisulfuros en el almacenamiento y señalización de H2S.

Principales métodos:

Síntesis y aislamiento de un hidrodisulfuro.
Caracterización mediante RMN, IR, Raman, HRMS y difracción de rayos X.
Estudios de reactividad con reductores, nucleófilos, electrófilos, ácidos y bases.

Principales resultados:

Con éxito sintetizó y caracterizó un nuevo hidrodisulfuro.
Se demostró que los hidrodisulfuros liberan H2S al reducirse.
Se ha demostrado que la desprotonación conduce a la desproporción en tiol y azufre elemental (S(0)).

Conclusiones:

Los hidrodisulfuros son intermediarios clave en el metabolismo del H2S.
Se estableció el perfil de reactividad de los hidrodisulfuros.
Proporcionó un mecanismo para la transsulfuración dentro de la piscina de azufre sulfano.

Más Videos Relacionados

Measurement of H2S in Crude Oil and Crude Oil Headspace Using Multidimensional Gas Chromatography, Deans Switching and Sulfur-selective Detection

Measurement of H2S in Crude Oil and Crude Oil Headspace Using Multidimensional Gas Chromatography, Deans Switching and Sulfur-selective Detection

Published on: December 10, 2015

Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework

Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework

Published on: April 9, 2018

Videos de Conceptos Relacionados

Preparation and Reactions of Sulfides

Preparation and Reactions of Sulfides

Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.

Preparation and Reactions of Thiols

Preparation and Reactions of Thiols

Thiols are prepared using the hydrosulfide anion as a nucleophile in a nucleophilic substitution reaction with alkyl halides. For instance, bromobutane reacts with sodium hydrosulfide to give butanethiol.

Structure and Nomenclature of Thiols and Sulfides

Structure and Nomenclature of Thiols and Sulfides

Thiols and sulfides are sulfur analogs of alcohols and ethers, respectively, where the sulfur atom takes the place of the oxygen atom. Thus, thiols are generally represented as RSH, where R is an alkyl substituent and —SH is the functional group. On the other hand, in sulfides, the central sulfur atom is bonded to two hydrocarbon groups on either side. Depending upon the type of group, sulfides can be either symmetrical or asymmetrical. Both thiols and sulfides display a bent geometry,...

Microbes and the Sulfur Cycle

Microbes and the Sulfur Cycle

Sulfur is a vital element in Earth's biogeochemical systems. It transitions through various inorganic states, including sulfate (SO₄²⁻), elemental sulfur (S⁰), and sulfide (S²⁻). Abiotic and biological mechanisms across oxic and anoxic environments intricately mediate these transformations. Sulfate, the most oxidized form of sulfur, is predominantly stored in rocks, marine sediments, and oceanic waters, acting as a long-term reservoir in the global sulfur...

Acid Mine Drainage

Acid Mine Drainage

Mining activities that disturb sulfide-rich rocks, particularly those containing pyrite (FeS₂), initiate a cascade of geochemical and microbiological processes with serious environmental implications. When exposed to air and water, pyrite undergoes oxidation, releasing sulfate, ultimately forming sulfuric acid and mobilizing heavy metals into surrounding water systems. This phenomenon, known as acid mine drainage (AMD), results in low pH waters laden with toxic elements that threaten...

Precipitation and Co-precipitation

Precipitation and Co-precipitation

Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...