From Monomers to Geometry-Constrained Molecules: One Step Further Toward Cyanide Bridged Wires
We report on the synthesis and properties of a family of linear cyanide bridged mixed-valence heptanuclear complexes with the formula: trans-[L₄Ruᴵᴵ{(μ-NC)Feᴵᴵᴵ(NC)₄(μ-CN)RuᴵᴵL′₄(μ-NC)Feᴵᴵᴵ(CN)₅}₂]⁶⁻ (with L and L′ a para substituted pyridine). We also report on the properties of a related pentanucl...
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| Formato: | Articulo |
| Lenguaje: | Inglés |
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2009
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/163493 |
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I19-R120-10915-163493 |
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I19-R120-10915-1634932024-03-06T20:11:01Z http://sedici.unlp.edu.ar/handle/10915/163493 From Monomers to Geometry-Constrained Molecules: One Step Further Toward Cyanide Bridged Wires Alborés, Pablo Slep, Leonardo D. Eberlin, Livia S. Corilo, Yuri E. Eberlin, Marcos N. Benitez, Guillermo Alfredo Vela, María Elena Salvarezza, Roberto Carlos Baraldo, Luis M. 2009 2024-03-06T14:48:06Z en Ciencias Exactas Química alcohols cluster chemistry cluster ions inorganic carbon compounds redox reactions We report on the synthesis and properties of a family of linear cyanide bridged mixed-valence heptanuclear complexes with the formula: trans-[L₄Ruᴵᴵ{(μ-NC)Feᴵᴵᴵ(NC)₄(μ-CN)RuᴵᴵL′₄(μ-NC)Feᴵᴵᴵ(CN)₅}₂]⁶⁻ (with L and L′ a para substituted pyridine). We also report on the properties of a related pentanuclear complex. These oligomers were purified by size exclusion chromatography, characterized by electrospray ionization (ESI) mass spectrometry and elemental analysis, and their linear shape was confirmed by scanning tunneling microscopy (STM). These complexes present a rich electrochemistry associated with the seven redox active centers. The redox potential split of identical fragments indicates that there is considerable communication along the cyanide bridged backbone of the compounds, even for centers more than 3 nm apart. This small attenuation of the interaction at long distances make these cyanide bridged compounds good candidates for molecular wires. Interestingly, the extent of the communication depends on the relative energy of the fragments, as evaluated by their redox potentials, providing a guide for improvement of this interesting property. Facultad de Ciencias Exactas Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas Articulo Articulo http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) application/pdf 11226-11235 |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Exactas Química alcohols cluster chemistry cluster ions inorganic carbon compounds redox reactions |
| spellingShingle |
Ciencias Exactas Química alcohols cluster chemistry cluster ions inorganic carbon compounds redox reactions Alborés, Pablo Slep, Leonardo D. Eberlin, Livia S. Corilo, Yuri E. Eberlin, Marcos N. Benitez, Guillermo Alfredo Vela, María Elena Salvarezza, Roberto Carlos Baraldo, Luis M. From Monomers to Geometry-Constrained Molecules: One Step Further Toward Cyanide Bridged Wires |
| topic_facet |
Ciencias Exactas Química alcohols cluster chemistry cluster ions inorganic carbon compounds redox reactions |
| description |
We report on the synthesis and properties of a family of linear cyanide bridged mixed-valence heptanuclear complexes with the formula: trans-[L₄Ruᴵᴵ{(μ-NC)Feᴵᴵᴵ(NC)₄(μ-CN)RuᴵᴵL′₄(μ-NC)Feᴵᴵᴵ(CN)₅}₂]⁶⁻ (with L and L′ a para substituted pyridine). We also report on the properties of a related pentanuclear complex. These oligomers were purified by size exclusion chromatography, characterized by electrospray ionization (ESI) mass spectrometry and elemental analysis, and their linear shape was confirmed by scanning tunneling microscopy (STM). These complexes present a rich electrochemistry associated with the seven redox active centers. The redox potential split of identical fragments indicates that there is considerable communication along the cyanide bridged backbone of the compounds, even for centers more than 3 nm apart. This small attenuation of the interaction at long distances make these cyanide bridged compounds good candidates for molecular wires. Interestingly, the extent of the communication depends on the relative energy of the fragments, as evaluated by their redox potentials, providing a guide for improvement of this interesting property. |
| format |
Articulo Articulo |
| author |
Alborés, Pablo Slep, Leonardo D. Eberlin, Livia S. Corilo, Yuri E. Eberlin, Marcos N. Benitez, Guillermo Alfredo Vela, María Elena Salvarezza, Roberto Carlos Baraldo, Luis M. |
| author_facet |
Alborés, Pablo Slep, Leonardo D. Eberlin, Livia S. Corilo, Yuri E. Eberlin, Marcos N. Benitez, Guillermo Alfredo Vela, María Elena Salvarezza, Roberto Carlos Baraldo, Luis M. |
| author_sort |
Alborés, Pablo |
| title |
From Monomers to Geometry-Constrained Molecules: One Step Further Toward Cyanide Bridged Wires |
| title_short |
From Monomers to Geometry-Constrained Molecules: One Step Further Toward Cyanide Bridged Wires |
| title_full |
From Monomers to Geometry-Constrained Molecules: One Step Further Toward Cyanide Bridged Wires |
| title_fullStr |
From Monomers to Geometry-Constrained Molecules: One Step Further Toward Cyanide Bridged Wires |
| title_full_unstemmed |
From Monomers to Geometry-Constrained Molecules: One Step Further Toward Cyanide Bridged Wires |
| title_sort |
from monomers to geometry-constrained molecules: one step further toward cyanide bridged wires |
| publishDate |
2009 |
| url |
http://sedici.unlp.edu.ar/handle/10915/163493 |
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