Magnetic and Spectroscopic Study on a New Asymmetric Mixed-valence Mn2(II,III) Coordination Compound
- Publikationstyp:
- Zeitschriftenaufsatz
- Metadaten:
-
- Autoren
- Martin Jung
- Eva Rentschler
- Autoren-URL
- https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000362689000034&DestLinkType=FullRecord&DestApp=WOS_CPL
- DOI
- 10.1002/zaac.201500551
- eISSN
- 1521-3749
- Externe Identifier
- Clarivate Analytics Document Solution ID: CT3EC
- ISSN
- 0044-2313
- Ausgabe der Veröffentlichung
- 12-13
- Zeitschrift
- ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
- Schlüsselwörter
- Mixed valence
- Manganese
- Unsymmetric ligands
- EPR spectroscopy
- Paginierung
- 2277 - 2281
- Datum der Veröffentlichung
- 2015
- Status
- Published
- Titel
- Magnetic and Spectroscopic Study on a New Asymmetric Mixed-valence Mn<sub>2</sub>(II,III) Coordination Compound
- Sub types
- Article
- Ausgabe der Zeitschrift
- 641
Datenquelle: Web of Science (Lite)
- Andere Metadatenquellen:
-
- Abstract
- <jats:title>Abstract</jats:title><jats:p> A new dinuclear mixed‐valence compound [Mn<jats:sup>II</jats:sup>Mn<jats:sup>III</jats:sup>(bttpnol)(O<jats:sub>2</jats:sub>C–C<jats:sub>6</jats:sub>H<jats:sub>4</jats:sub>–NO<jats:sub>2</jats:sub>)<jats:sub>2</jats:sub>]ClO<jats:sub>4</jats:sub> was synthesized by using the asymmetric heptadentate ligand <jats:italic>N</jats:italic>‐(2‐hydroxybenzyl)‐<jats:italic>N,N</jats:italic>′,<jats:italic>N</jats:italic>′‐tris(2‐pyridylmethyl)‐1,3‐diaminopropan‐2‐ol (H<jats:sub>2</jats:sub>btppnol). One central manganese atom assumes N<jats:sub>3</jats:sub>O<jats:sub>3</jats:sub> and the other N<jats:sub>2</jats:sub>O<jats:sub>4</jats:sub> coordination sphere. Both manganese ions are bridged by the alkoxy‐group of the dinucleating ligand and two bidentate carboxylate groups of the nitrobenzoate ligands. The structural data show clearly that Mn<jats:sup>III</jats:sup> prefers the more oxygen rich donor set. Cyclic voltammetry measurements reveal that the mixed‐valence state Mn<jats:sub>2</jats:sub>(II,III) could be reduced to Mn<jats:sub>2</jats:sub>(II,II) at <jats:italic>E</jats:italic><jats:sub>1/2</jats:sub>(1) = –0.53 V and oxidized to Mn<jats:sub>2</jats:sub>(III,III) at <jats:italic>E</jats:italic><jats:sub>1/2</jats:sub>(2) = 0.52 V (vs. ferrocene). Measurements of the magnetic susceptibility reveal a weak antiferromagnetic coupling with <jats:italic>J</jats:italic> = –8.5 cm<jats:sup>–1</jats:sup>. The mixed valence state was additionally confirmed by EPR spectroscopy showing the hyperfine signal of the <jats:italic>S</jats:italic> = 1/2 state of Mn<jats:sub>2</jats:sub>(II,III).</jats:p>
- Autoren
- Martin Jung
- Eva Rentschler
- DOI
- 10.1002/zaac.201500551
- eISSN
- 1521-3749
- ISSN
- 0044-2313
- Ausgabe der Veröffentlichung
- 12-13
- Zeitschrift
- Zeitschrift für anorganische und allgemeine Chemie
- Sprache
- en
- Online publication date
- 2015
- Paginierung
- 2277 - 2281
- Datum der Veröffentlichung
- 2015
- Status
- Published
- Herausgeber
- Wiley
- Herausgeber URL
- http://dx.doi.org/10.1002/zaac.201500551
- Datum der Datenerfassung
- 2023
- Titel
- Magnetic and Spectroscopic Study on a New Asymmetric Mixed‐valence Mn<sub>2</sub>(II,III) Coordination Compound
- Ausgabe der Zeitschrift
- 641
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