Spectral properties and reactivity of the binuclear complex ion μ-(p-benzoquinonediimine)bis[pentacyanoferrate(II)]
A sodium salt containing the binuclear complex anion μ-(p-benzoquinonediimine) bis(pentacyanoferrate(II)], [(NC)5FeHNC6H4NHFe(CN)5]6- [first described by Herington(3)) has been isolated as a solid from an oxygenated solution ofp-phenylenediamine and sodium amminepentacyanoferrate(II) in a 1∶2 molar...
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Formato: | Articulo |
Lenguaje: | Inglés |
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1991
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Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/140227 |
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I19-R120-10915-140227 |
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institution |
Universidad Nacional de La Plata |
institution_str |
I-19 |
repository_str |
R-120 |
collection |
SEDICI (UNLP) |
language |
Inglés |
topic |
Química Ciencias Exactas sodium salt spectra point |
spellingShingle |
Química Ciencias Exactas sodium salt spectra point Cutin, Edgardo H. Katz, Néstor E. Williams, Patricia Ana María Aymonino, Pedro José Spectral properties and reactivity of the binuclear complex ion μ-(p-benzoquinonediimine)bis[pentacyanoferrate(II)] |
topic_facet |
Química Ciencias Exactas sodium salt spectra point |
description |
A sodium salt containing the binuclear complex anion μ-(p-benzoquinonediimine) bis(pentacyanoferrate(II)], [(NC)5FeHNC6H4NHFe(CN)5]6- [first described by Herington(3)) has been isolated as a solid from an oxygenated solution ofp-phenylenediamine and sodium amminepentacyanoferrate(II) in a 1∶2 molar ratio. The i.r. and u.v.-vis. spectra point to a quinonediimine structure for the bridging ligand. In aqueous solution this ion dissociates into aquopentacyanoferrate(II) andp-benzoquinonediiminepentacyanoferrate(II), with kobs=1.1×10−2s−1. The formation of the mononuclear pentacyanoferrate(II) complex of protonatedp-benzoquinonediimine is favoured at pH≤8. The pKa value for the coordinated diimine isca. two orders of magnitude higher than that for the free ligand, thus indicating thatp-benzoquinonediimine is stabilized by coordination to the [Fe(CN)5]3- moiety, though to a lesser extent than in rutheniumammine analogues. |
format |
Articulo Articulo |
author |
Cutin, Edgardo H. Katz, Néstor E. Williams, Patricia Ana María Aymonino, Pedro José |
author_facet |
Cutin, Edgardo H. Katz, Néstor E. Williams, Patricia Ana María Aymonino, Pedro José |
author_sort |
Cutin, Edgardo H. |
title |
Spectral properties and reactivity of the binuclear complex ion μ-(p-benzoquinonediimine)bis[pentacyanoferrate(II)] |
title_short |
Spectral properties and reactivity of the binuclear complex ion μ-(p-benzoquinonediimine)bis[pentacyanoferrate(II)] |
title_full |
Spectral properties and reactivity of the binuclear complex ion μ-(p-benzoquinonediimine)bis[pentacyanoferrate(II)] |
title_fullStr |
Spectral properties and reactivity of the binuclear complex ion μ-(p-benzoquinonediimine)bis[pentacyanoferrate(II)] |
title_full_unstemmed |
Spectral properties and reactivity of the binuclear complex ion μ-(p-benzoquinonediimine)bis[pentacyanoferrate(II)] |
title_sort |
spectral properties and reactivity of the binuclear complex ion μ-(p-benzoquinonediimine)bis[pentacyanoferrate(ii)] |
publishDate |
1991 |
url |
http://sedici.unlp.edu.ar/handle/10915/140227 |
work_keys_str_mv |
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bdutipo_str |
Repositorios |
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1764820458432102400 |