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Tetrabromidocuprates(II)—Synthesis, Structure and EPR

Metal-containing ionic liquids (ILs) are of interest for a variety of technical applications, e.g., particle synthesis and materials with magnetic or thermochromic properties. In this paper we report the synthesis of, and two structures for, some new tetrabromidocuprates(II) with several “onium” cat...

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Detalles Bibliográficos
Autores principales: Zabel, André, Winter, Alette, Kelling, Alexandra, Schilde, Uwe, Strauch, Peter
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4849050/
https://www.ncbi.nlm.nih.gov/pubmed/27104522
http://dx.doi.org/10.3390/ijms17040596
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author Zabel, André
Winter, Alette
Kelling, Alexandra
Schilde, Uwe
Strauch, Peter
author_facet Zabel, André
Winter, Alette
Kelling, Alexandra
Schilde, Uwe
Strauch, Peter
author_sort Zabel, André
collection PubMed
description Metal-containing ionic liquids (ILs) are of interest for a variety of technical applications, e.g., particle synthesis and materials with magnetic or thermochromic properties. In this paper we report the synthesis of, and two structures for, some new tetrabromidocuprates(II) with several “onium” cations in comparison to the results of electron paramagnetic resonance (EPR) spectroscopic analyses. The sterically demanding cations were used to separate the paramagnetic Cu(II) ions for EPR measurements. The EPR hyperfine structure in the spectra of these new compounds is not resolved, due to the line broadening resulting from magnetic exchange between the still-incomplete separated paramagnetic Cu(II) centres. For the majority of compounds, the principal g values (g(‖) and g(⊥)) of the tensors could be determined and information on the structural changes in the [CuBr(4)](2−) anions can be obtained. The complexes have high potential, e.g., as ionic liquids, as precursors for the synthesis of copper bromide particles, as catalytically active or paramagnetic ionic liquids.
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spelling pubmed-48490502016-05-04 Tetrabromidocuprates(II)—Synthesis, Structure and EPR Zabel, André Winter, Alette Kelling, Alexandra Schilde, Uwe Strauch, Peter Int J Mol Sci Article Metal-containing ionic liquids (ILs) are of interest for a variety of technical applications, e.g., particle synthesis and materials with magnetic or thermochromic properties. In this paper we report the synthesis of, and two structures for, some new tetrabromidocuprates(II) with several “onium” cations in comparison to the results of electron paramagnetic resonance (EPR) spectroscopic analyses. The sterically demanding cations were used to separate the paramagnetic Cu(II) ions for EPR measurements. The EPR hyperfine structure in the spectra of these new compounds is not resolved, due to the line broadening resulting from magnetic exchange between the still-incomplete separated paramagnetic Cu(II) centres. For the majority of compounds, the principal g values (g(‖) and g(⊥)) of the tensors could be determined and information on the structural changes in the [CuBr(4)](2−) anions can be obtained. The complexes have high potential, e.g., as ionic liquids, as precursors for the synthesis of copper bromide particles, as catalytically active or paramagnetic ionic liquids. MDPI 2016-04-20 /pmc/articles/PMC4849050/ /pubmed/27104522 http://dx.doi.org/10.3390/ijms17040596 Text en © 2016 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zabel, André
Winter, Alette
Kelling, Alexandra
Schilde, Uwe
Strauch, Peter
Tetrabromidocuprates(II)—Synthesis, Structure and EPR
title Tetrabromidocuprates(II)—Synthesis, Structure and EPR
title_full Tetrabromidocuprates(II)—Synthesis, Structure and EPR
title_fullStr Tetrabromidocuprates(II)—Synthesis, Structure and EPR
title_full_unstemmed Tetrabromidocuprates(II)—Synthesis, Structure and EPR
title_short Tetrabromidocuprates(II)—Synthesis, Structure and EPR
title_sort tetrabromidocuprates(ii)—synthesis, structure and epr
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4849050/
https://www.ncbi.nlm.nih.gov/pubmed/27104522
http://dx.doi.org/10.3390/ijms17040596
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