Aufsatz
Lanthanide Complexes (Ln=La, Nd, Dy) of Octaethyl propane-1,1,3,3-tetrayltetrakis(phosphonate): Multidentate Binding Competing with Monodentate DMSO Complexes
Zusammenfassung
The preparation of lanthanide nitrate complexes [Ln(NO₃)₃{L}]ₙ (Ln³+=La, Nd, Dy) supported by the octaethyl propane-1,1,3,3-tetrayltetrakis(phosphonate) (L) chelate ligand platform is presented. Re-crystallization of these compounds from DMSO/THF led to a complete replacement of the multidentate phosphonate ester ligand and the formation of exclusively DMSO-supported lanthanide nitrate species [Ln(NO₃)₃(DMSO)₄]. The relative basicity of a model phosphonate ester vs. DMSO is explored with theoretical means, pointing out the relevance of solvation in this case in line with the experimentally observed exchange process. The optical properties of the dysprosium(III) derivatives are examined in the visible region indicating a significantly higher quantum yield for its tetraphosphonic ester complex than for the DMSO coordinated analog.
Zitierform
In: Zeitschrift für anorganische und allgemeine Chemie : ZAAC = Journal of inorganic and general chemistry Volume 649 / Issue 5 (2022-12-09) eissn:1521-3749Förderhinweis
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@article{doi:10.17170/kobra-202303157634,
author={Koehne, Ingo and Pietschnig, Rudolf},
title={Lanthanide Complexes (Ln=La, Nd, Dy) of Octaethyl propane-1,1,3,3-tetrayltetrakis(phosphonate): Multidentate Binding Competing with Monodentate DMSO Complexes},
journal={Zeitschrift für anorganische und allgemeine Chemie : ZAAC = Journal of inorganic and general chemistry},
year={2022}
}
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2023-03-15T09:08:17Z 2023-03-15T09:08:17Z 2022-12-09 doi:10.17170/kobra-202303157634 http://hdl.handle.net/123456789/14493 Gefördert im Rahmen des Projekts DEAL eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ 540 Lanthanide Complexes (Ln=La, Nd, Dy) of Octaethyl propane-1,1,3,3-tetrayltetrakis(phosphonate): Multidentate Binding Competing with Monodentate DMSO Complexes Aufsatz The preparation of lanthanide nitrate complexes [Ln(NO₃)₃{L}]ₙ (Ln³+=La, Nd, Dy) supported by the octaethyl propane-1,1,3,3-tetrayltetrakis(phosphonate) (L) chelate ligand platform is presented. Re-crystallization of these compounds from DMSO/THF led to a complete replacement of the multidentate phosphonate ester ligand and the formation of exclusively DMSO-supported lanthanide nitrate species [Ln(NO₃)₃(DMSO)₄]. The relative basicity of a model phosphonate ester vs. DMSO is explored with theoretical means, pointing out the relevance of solvation in this case in line with the experimentally observed exchange process. The optical properties of the dysprosium(III) derivatives are examined in the visible region indicating a significantly higher quantum yield for its tetraphosphonic ester complex than for the DMSO coordinated analog. open access Koehne, Ingo Pietschnig, Rudolf doi:10.1002/zaac.202200344 Lanthanoidkomplexe Dimethylsulfoxid Basizität Quantenausbeute publishedVersion eissn:1521-3749 Issue 5 Zeitschrift für anorganische und allgemeine Chemie : ZAAC = Journal of inorganic and general chemistry Volume 649 false e202200344
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