Reduction of the NO+ ligand in the pentacyanonitrosylosmate(II) ion

The reversible reduction of [Os(CN)5(NO)]2-, the osmium analog of the nitroprusside ion, has been studied by spectroelectrochemical techniques (IR, UV-Vis, EPR). The strong shift of the nitrosyl stretching band from 1850 to 1560 cm-1 (in acetonitrile) already indicates nitrosyl ligand-centered reduc...

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Detalles Bibliográficos
Publicado: 1999
Materias:
Cyanide complexes
EPR
Nitrosyl complexes
Osmium complexes
Spectroelectrochemistry
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00201693_v285_n1_p129_Baumann
http://hdl.handle.net/20.500.12110/paper_00201693_v285_n1_p129_Baumann
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00201693_v285_n1_p129_Baumann
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spelling paper:paper_00201693_v285_n1_p129_Baumann2023-06-08T14:40:48Z Reduction of the NO+ ligand in the pentacyanonitrosylosmate(II) ion Cyanide complexes EPR Nitrosyl complexes Osmium complexes Spectroelectrochemistry The reversible reduction of [Os(CN)5(NO)]2-, the osmium analog of the nitroprusside ion, has been studied by spectroelectrochemical techniques (IR, UV-Vis, EPR). The strong shift of the nitrosyl stretching band from 1850 to 1560 cm-1 (in acetonitrile) already indicates nitrosyl ligand-centered reduction in comparison to the smaller shifts for the cyanide frequencies (2140 → 2080 cm-1). Remarkably, the g factor analysis (g|| = 2.017, g⊥ = 2.003) for electrogenerated [Os(CN)5(NO)]3- does not reflect any effect from the 5d element osmium with its high spin-orbit coupling constant; only the need to apply helium temperatures for EPR signal observation indicates the presence of a heavy transition metal. 1999 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00201693_v285_n1_p129_Baumann http://hdl.handle.net/20.500.12110/paper_00201693_v285_n1_p129_Baumann
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Cyanide complexes
EPR
Nitrosyl complexes
Osmium complexes
Spectroelectrochemistry
spellingShingle Cyanide complexes
EPR
Nitrosyl complexes
Osmium complexes
Spectroelectrochemistry
Reduction of the NO+ ligand in the pentacyanonitrosylosmate(II) ion
topic_facet Cyanide complexes
EPR
Nitrosyl complexes
Osmium complexes
Spectroelectrochemistry
description The reversible reduction of [Os(CN)5(NO)]2-, the osmium analog of the nitroprusside ion, has been studied by spectroelectrochemical techniques (IR, UV-Vis, EPR). The strong shift of the nitrosyl stretching band from 1850 to 1560 cm-1 (in acetonitrile) already indicates nitrosyl ligand-centered reduction in comparison to the smaller shifts for the cyanide frequencies (2140 → 2080 cm-1). Remarkably, the g factor analysis (g|| = 2.017, g⊥ = 2.003) for electrogenerated [Os(CN)5(NO)]3- does not reflect any effect from the 5d element osmium with its high spin-orbit coupling constant; only the need to apply helium temperatures for EPR signal observation indicates the presence of a heavy transition metal.
title Reduction of the NO+ ligand in the pentacyanonitrosylosmate(II) ion
title_short Reduction of the NO+ ligand in the pentacyanonitrosylosmate(II) ion
title_full Reduction of the NO+ ligand in the pentacyanonitrosylosmate(II) ion
title_fullStr Reduction of the NO+ ligand in the pentacyanonitrosylosmate(II) ion
title_full_unstemmed Reduction of the NO+ ligand in the pentacyanonitrosylosmate(II) ion
title_sort reduction of the no+ ligand in the pentacyanonitrosylosmate(ii) ion
publishDate 1999
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00201693_v285_n1_p129_Baumann
http://hdl.handle.net/20.500.12110/paper_00201693_v285_n1_p129_Baumann
_version_ 1768543069082222592

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