Aqueous phase kinetic studies involving intermediates of environmental interest: phosphate radicals and their reactions with substituted benzenes
This manuscript describes our research work devoted to the understanding of the aqueous phase reactions of phosphate and polyphosphate radicals. Inorganic phosphate and polyphosphate radicals were generated after photolysis of peroxodiphosphate, tripolyphosphate and pyrophosphate ions. The reactions...
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| Formato: | Articulo |
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2001
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/159130 |
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I19-R120-10915-159130 |
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I19-R120-10915-1591302023-10-19T20:07:38Z http://sedici.unlp.edu.ar/handle/10915/159130 Aqueous phase kinetic studies involving intermediates of environmental interest: phosphate radicals and their reactions with substituted benzenes Mártire, Daniel Osvaldo González, Mónica Cristina 2001 2023-10-19T19:01:47Z en Química phosphate radicals flash-photolysis mono-substituted benzenes tripolyphosphate pyrophosphate peroxodiphosphate phosphate hydroxyciclohexadienyl radicals phenoxyl radicals This manuscript describes our research work devoted to the understanding of the aqueous phase reactions of phosphate and polyphosphate radicals. Inorganic phosphate and polyphosphate radicals were generated after photolysis of peroxodiphosphate, tripolyphosphate and pyrophosphate ions. The reactions of SO₄ •⁻ radicals with P₂O₇ ⁴⁻ and P₃O₁₀ ⁵⁻ are also discussed. The logarithm of the bimolecular rate constants for the reactions of the three phosphate radicals (H₂PO₄ •, H₂PO₄ •⁻, PO4 •²⁻) with substituted benzenes are discussed in terms of Hammett correlations and a reaction mechanism is proposed. Phenoxyl type radical formation from the reactions of H₂PO₄ • and HPO₄ •⁻ radicals with phenol, chlorobenzene, and a, a, a-trifluorotoluene (TFT) supports the contribution of an addition pathway yielding a phosphate adduct with the substituted benzene. Additional information on the absorption spectra and decay kinetics of the hydroxycyclohexadienyl radicals of chlorobenzene and TFT is also given. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas Articulo Articulo http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf 201-218 |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Química phosphate radicals flash-photolysis mono-substituted benzenes tripolyphosphate pyrophosphate peroxodiphosphate phosphate hydroxyciclohexadienyl radicals phenoxyl radicals |
| spellingShingle |
Química phosphate radicals flash-photolysis mono-substituted benzenes tripolyphosphate pyrophosphate peroxodiphosphate phosphate hydroxyciclohexadienyl radicals phenoxyl radicals Mártire, Daniel Osvaldo González, Mónica Cristina Aqueous phase kinetic studies involving intermediates of environmental interest: phosphate radicals and their reactions with substituted benzenes |
| topic_facet |
Química phosphate radicals flash-photolysis mono-substituted benzenes tripolyphosphate pyrophosphate peroxodiphosphate phosphate hydroxyciclohexadienyl radicals phenoxyl radicals |
| description |
This manuscript describes our research work devoted to the understanding of the aqueous phase reactions of phosphate and polyphosphate radicals. Inorganic phosphate and polyphosphate radicals were generated after photolysis of peroxodiphosphate, tripolyphosphate and pyrophosphate ions. The reactions of SO₄ •⁻ radicals with P₂O₇ ⁴⁻ and P₃O₁₀ ⁵⁻ are also discussed.
The logarithm of the bimolecular rate constants for the reactions of the three phosphate radicals (H₂PO₄ •, H₂PO₄ •⁻, PO4 •²⁻) with substituted benzenes are discussed in terms of Hammett correlations and a reaction mechanism is proposed.
Phenoxyl type radical formation from the reactions of H₂PO₄ • and HPO₄ •⁻ radicals with phenol, chlorobenzene, and a, a, a-trifluorotoluene (TFT) supports the contribution of an addition pathway yielding a phosphate adduct with the substituted benzene. Additional information on the absorption spectra and decay kinetics of the hydroxycyclohexadienyl radicals of chlorobenzene and TFT is also given. |
| format |
Articulo Articulo |
| author |
Mártire, Daniel Osvaldo González, Mónica Cristina |
| author_facet |
Mártire, Daniel Osvaldo González, Mónica Cristina |
| author_sort |
Mártire, Daniel Osvaldo |
| title |
Aqueous phase kinetic studies involving intermediates of environmental interest: phosphate radicals and their reactions with substituted benzenes |
| title_short |
Aqueous phase kinetic studies involving intermediates of environmental interest: phosphate radicals and their reactions with substituted benzenes |
| title_full |
Aqueous phase kinetic studies involving intermediates of environmental interest: phosphate radicals and their reactions with substituted benzenes |
| title_fullStr |
Aqueous phase kinetic studies involving intermediates of environmental interest: phosphate radicals and their reactions with substituted benzenes |
| title_full_unstemmed |
Aqueous phase kinetic studies involving intermediates of environmental interest: phosphate radicals and their reactions with substituted benzenes |
| title_sort |
aqueous phase kinetic studies involving intermediates of environmental interest: phosphate radicals and their reactions with substituted benzenes |
| publishDate |
2001 |
| url |
http://sedici.unlp.edu.ar/handle/10915/159130 |
| work_keys_str_mv |
AT martiredanielosvaldo aqueousphasekineticstudiesinvolvingintermediatesofenvironmentalinterestphosphateradicalsandtheirreactionswithsubstitutedbenzenes AT gonzalezmonicacristina aqueousphasekineticstudiesinvolvingintermediatesofenvironmentalinterestphosphateradicalsandtheirreactionswithsubstitutedbenzenes |
| _version_ |
1807221605312495616 |