Hydrazine autoxidation in solution: catalysis by pentacyanoferrate(II)

Hydrazine is oxidized by dissolved oxygen in aqueous solutions containing [Fe(CN)5]3-, in slightly acidic or alkaline conditions. The reaction involves the oxidation of [FeII(CN)5(N2H4)]3- to [FeIII(CN)5(N2H4)]2- as the first step, and kinetic features suggest that this is followed by dimerization t...

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Autor principal: Olabe Iparraguirre, Jose Antonio
Publicado: 1989
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02775387_v8_n4_p419_Funai
http://hdl.handle.net/20.500.12110/paper_02775387_v8_n4_p419_Funai
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_02775387_v8_n4_p419_Funai
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spelling paper:paper_02775387_v8_n4_p419_Funai2023-06-08T15:26:07Z Hydrazine autoxidation in solution: catalysis by pentacyanoferrate(II) Olabe Iparraguirre, Jose Antonio Hydrazine is oxidized by dissolved oxygen in aqueous solutions containing [Fe(CN)5]3-, in slightly acidic or alkaline conditions. The reaction involves the oxidation of [FeII(CN)5(N2H4)]3- to [FeIII(CN)5(N2H4)]2- as the first step, and kinetic features suggest that this is followed by dimerization to [(NC)5FeIII(N2H4)FeII(CN)5]5-; FeIIIFeIll and FeIIFeII dimers are then originated by fast electron-transfer. The first of these evolves to [(NC)5FeII(N2H2 FeII(CN)5]6-; this diimide complex shows a strong MLCT band at 515 nm and is very stable in alkaline solutions (pH 8) free of O2 or H2O2. In the presence of these, or in more acidic media it evolves further to [Fe(CN)5(H2O)]3-+N2. © 1989. Fil:Olabe, J.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1989 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02775387_v8_n4_p419_Funai http://hdl.handle.net/20.500.12110/paper_02775387_v8_n4_p419_Funai
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description Hydrazine is oxidized by dissolved oxygen in aqueous solutions containing [Fe(CN)5]3-, in slightly acidic or alkaline conditions. The reaction involves the oxidation of [FeII(CN)5(N2H4)]3- to [FeIII(CN)5(N2H4)]2- as the first step, and kinetic features suggest that this is followed by dimerization to [(NC)5FeIII(N2H4)FeII(CN)5]5-; FeIIIFeIll and FeIIFeII dimers are then originated by fast electron-transfer. The first of these evolves to [(NC)5FeII(N2H2 FeII(CN)5]6-; this diimide complex shows a strong MLCT band at 515 nm and is very stable in alkaline solutions (pH 8) free of O2 or H2O2. In the presence of these, or in more acidic media it evolves further to [Fe(CN)5(H2O)]3-+N2. © 1989.
author Olabe Iparraguirre, Jose Antonio
spellingShingle Olabe Iparraguirre, Jose Antonio
Hydrazine autoxidation in solution: catalysis by pentacyanoferrate(II)
author_facet Olabe Iparraguirre, Jose Antonio
author_sort Olabe Iparraguirre, Jose Antonio
title Hydrazine autoxidation in solution: catalysis by pentacyanoferrate(II)
title_short Hydrazine autoxidation in solution: catalysis by pentacyanoferrate(II)
title_full Hydrazine autoxidation in solution: catalysis by pentacyanoferrate(II)
title_fullStr Hydrazine autoxidation in solution: catalysis by pentacyanoferrate(II)
title_full_unstemmed Hydrazine autoxidation in solution: catalysis by pentacyanoferrate(II)
title_sort hydrazine autoxidation in solution: catalysis by pentacyanoferrate(ii)
publishDate 1989
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02775387_v8_n4_p419_Funai
http://hdl.handle.net/20.500.12110/paper_02775387_v8_n4_p419_Funai
work_keys_str_mv AT olabeiparraguirrejoseantonio hydrazineautoxidationinsolutioncatalysisbypentacyanoferrateii
_version_ 1768542035523928064

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