Single crystal EPR study of the dinuclear Cu(II) complex [Cu(tda)(phen)]2·H2tda (tda = Thiodiacetate, phen = Phenanthroline): Influence of weak interdimeric magnetic interactions

We report powder and single crystal EPR measurements of [Cu(tda)(phen)]2·H2tda (tda = thiodiacetate, phen = phenanthroline) at 9.7 GHz. This compound consists of centrosymmetric copper(II) ion dimers, weakly ferromagnetically exchange-coupled (J = +3.2 cm-1), in which the dimeric units are linked by...

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Autores principales:	Perec, Mireille, Passeggi, Mario César
Publicado:	2010
Materias:	Analysis and simulation Andersons Centrosymmetric Copper ions Cu complexes Dimeric units Dinuclear Exchange constants Hydrophobic chemicals Long distances Magnetic interactions Phenanthrolines Single crystal EPR Computer simulation Dimers Exchange interactions Hydrophobicity Ion exchange Paramagnetic resonance Single crystals Electron spin resonance spectroscopy copper ligand organometallic compound article chemical structure chemistry conformation dimerization electron spin resonance magnetism X ray crystallography Copper Crystallography, X-Ray Dimerization Electron Spin Resonance Spectroscopy Ligands Magnetics Models, Molecular Molecular Conformation Organometallic Compounds
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10895639_v114_n50_p13069_Neuman http://hdl.handle.net/20.500.12110/paper_10895639_v114_n50_p13069_Neuman
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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spelling	paper:paper_10895639_v114_n50_p13069_Neuman2023-06-08T16:06:28Z Single crystal EPR study of the dinuclear Cu(II) complex [Cu(tda)(phen)]2·H2tda (tda = Thiodiacetate, phen = Phenanthroline): Influence of weak interdimeric magnetic interactions Perec, Mireille Passeggi, Mario César Analysis and simulation Andersons Centrosymmetric Copper ions Cu complexes Dimeric units Dinuclear Exchange constants Hydrophobic chemicals Long distances Magnetic interactions Phenanthrolines Single crystal EPR Computer simulation Dimers Exchange interactions Hydrophobicity Ion exchange Paramagnetic resonance Single crystals Electron spin resonance spectroscopy copper ligand organometallic compound article chemical structure chemistry conformation dimerization electron spin resonance magnetism X ray crystallography Copper Crystallography, X-Ray Dimerization Electron Spin Resonance Spectroscopy Ligands Magnetics Models, Molecular Molecular Conformation Organometallic Compounds We report powder and single crystal EPR measurements of [Cu(tda)(phen)]2·H2tda (tda = thiodiacetate, phen = phenanthroline) at 9.7 GHz. This compound consists of centrosymmetric copper(II) ion dimers, weakly ferromagnetically exchange-coupled (J = +3.2 cm-1), in which the dimeric units are linked by hydrophobic chemical paths involving the phen molecules. EPR revealed that the triplet spectra are collapsed by interdimeric exchange interactions mediated by that chemical path. Analysis and simulation of the single crystal EPR spectra were performed using Anderson's exchange narrowing model, together with statistical arguments. This approach allowed us to interpret the spectra modulated by the interdimeric interactions in situations of weak, intermediate, and strong exchange. We evaluated an interdimeric exchange constant J′ = 0.0070(3) cm -1, indicating that hydrophobic paths can transmit weak exchange interactions between centers at relatively long distances of the order of ∼10 Å. © 2010 American Chemical Society. Fil:Perec, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Passeggi, M.C.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10895639_v114_n50_p13069_Neuman http://hdl.handle.net/20.500.12110/paper_10895639_v114_n50_p13069_Neuman
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Analysis and simulation Andersons Centrosymmetric Copper ions Cu complexes Dimeric units Dinuclear Exchange constants Hydrophobic chemicals Long distances Magnetic interactions Phenanthrolines Single crystal EPR Computer simulation Dimers Exchange interactions Hydrophobicity Ion exchange Paramagnetic resonance Single crystals Electron spin resonance spectroscopy copper ligand organometallic compound article chemical structure chemistry conformation dimerization electron spin resonance magnetism X ray crystallography Copper Crystallography, X-Ray Dimerization Electron Spin Resonance Spectroscopy Ligands Magnetics Models, Molecular Molecular Conformation Organometallic Compounds
spellingShingle	Analysis and simulation Andersons Centrosymmetric Copper ions Cu complexes Dimeric units Dinuclear Exchange constants Hydrophobic chemicals Long distances Magnetic interactions Phenanthrolines Single crystal EPR Computer simulation Dimers Exchange interactions Hydrophobicity Ion exchange Paramagnetic resonance Single crystals Electron spin resonance spectroscopy copper ligand organometallic compound article chemical structure chemistry conformation dimerization electron spin resonance magnetism X ray crystallography Copper Crystallography, X-Ray Dimerization Electron Spin Resonance Spectroscopy Ligands Magnetics Models, Molecular Molecular Conformation Organometallic Compounds Perec, Mireille Passeggi, Mario César Single crystal EPR study of the dinuclear Cu(II) complex [Cu(tda)(phen)]2·H2tda (tda = Thiodiacetate, phen = Phenanthroline): Influence of weak interdimeric magnetic interactions
topic_facet	Analysis and simulation Andersons Centrosymmetric Copper ions Cu complexes Dimeric units Dinuclear Exchange constants Hydrophobic chemicals Long distances Magnetic interactions Phenanthrolines Single crystal EPR Computer simulation Dimers Exchange interactions Hydrophobicity Ion exchange Paramagnetic resonance Single crystals Electron spin resonance spectroscopy copper ligand organometallic compound article chemical structure chemistry conformation dimerization electron spin resonance magnetism X ray crystallography Copper Crystallography, X-Ray Dimerization Electron Spin Resonance Spectroscopy Ligands Magnetics Models, Molecular Molecular Conformation Organometallic Compounds
description	We report powder and single crystal EPR measurements of [Cu(tda)(phen)]2·H2tda (tda = thiodiacetate, phen = phenanthroline) at 9.7 GHz. This compound consists of centrosymmetric copper(II) ion dimers, weakly ferromagnetically exchange-coupled (J = +3.2 cm-1), in which the dimeric units are linked by hydrophobic chemical paths involving the phen molecules. EPR revealed that the triplet spectra are collapsed by interdimeric exchange interactions mediated by that chemical path. Analysis and simulation of the single crystal EPR spectra were performed using Anderson's exchange narrowing model, together with statistical arguments. This approach allowed us to interpret the spectra modulated by the interdimeric interactions in situations of weak, intermediate, and strong exchange. We evaluated an interdimeric exchange constant J′ = 0.0070(3) cm -1, indicating that hydrophobic paths can transmit weak exchange interactions between centers at relatively long distances of the order of ∼10 Å. © 2010 American Chemical Society.
author	Perec, Mireille Passeggi, Mario César
author_facet	Perec, Mireille Passeggi, Mario César
author_sort	Perec, Mireille
title	Single crystal EPR study of the dinuclear Cu(II) complex [Cu(tda)(phen)]2·H2tda (tda = Thiodiacetate, phen = Phenanthroline): Influence of weak interdimeric magnetic interactions
title_short	Single crystal EPR study of the dinuclear Cu(II) complex [Cu(tda)(phen)]2·H2tda (tda = Thiodiacetate, phen = Phenanthroline): Influence of weak interdimeric magnetic interactions
title_full	Single crystal EPR study of the dinuclear Cu(II) complex [Cu(tda)(phen)]2·H2tda (tda = Thiodiacetate, phen = Phenanthroline): Influence of weak interdimeric magnetic interactions
title_fullStr	Single crystal EPR study of the dinuclear Cu(II) complex [Cu(tda)(phen)]2·H2tda (tda = Thiodiacetate, phen = Phenanthroline): Influence of weak interdimeric magnetic interactions
title_full_unstemmed	Single crystal EPR study of the dinuclear Cu(II) complex [Cu(tda)(phen)]2·H2tda (tda = Thiodiacetate, phen = Phenanthroline): Influence of weak interdimeric magnetic interactions
title_sort	single crystal epr study of the dinuclear cu(ii) complex [cu(tda)(phen)]2·h2tda (tda = thiodiacetate, phen = phenanthroline): influence of weak interdimeric magnetic interactions
publishDate	2010
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10895639_v114_n50_p13069_Neuman http://hdl.handle.net/20.500.12110/paper_10895639_v114_n50_p13069_Neuman
work_keys_str_mv	AT perecmireille singlecrystaleprstudyofthedinuclearcuiicomplexcutdaphen2h2tdatdathiodiacetatephenphenanthrolineinfluenceofweakinterdimericmagneticinteractions AT passeggimariocesar singlecrystaleprstudyofthedinuclearcuiicomplexcutdaphen2h2tdatdathiodiacetatephenphenanthrolineinfluenceofweakinterdimericmagneticinteractions
_version_	1768542562815049728

Single crystal EPR study of the dinuclear Cu(II) complex [Cu(tda)(phen)]2·H2tda (tda = Thiodiacetate, phen = Phenanthroline): Influence of weak interdimeric magnetic interactions

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