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Low-Melting Manganese(II)-Based Ionic Liquids: Syntheses, Structures, Properties and Influence of Trace Impurities

The synthesis of more than 10 new magnetic ionic liquids with [MnX(4)](2−) anions, X = Cl, NCS, NCO, is presented. Detailed structural information through single-crystal X-ray diffraction is given for (DMDIm)[Mn(NCS)(4)], (BnEt(3)N)(2)[Mn(NCS)(4)], and {(Ph(3)P)(2)N}(2)[Mn(NCO(4))]·0.6H(2)O, respect...

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Autores principales: Peppel, Tim, Geppert-Rybczyńska, Monika, Neise, Christin, Kragl, Udo, Köckerling, Martin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6888301/
https://www.ncbi.nlm.nih.gov/pubmed/31731826
http://dx.doi.org/10.3390/ma12223764
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author Peppel, Tim
Geppert-Rybczyńska, Monika
Neise, Christin
Kragl, Udo
Köckerling, Martin
author_facet Peppel, Tim
Geppert-Rybczyńska, Monika
Neise, Christin
Kragl, Udo
Köckerling, Martin
author_sort Peppel, Tim
collection PubMed
description The synthesis of more than 10 new magnetic ionic liquids with [MnX(4)](2−) anions, X = Cl, NCS, NCO, is presented. Detailed structural information through single-crystal X-ray diffraction is given for (DMDIm)[Mn(NCS)(4)], (BnEt(3)N)(2)[Mn(NCS)(4)], and {(Ph(3)P)(2)N}(2)[Mn(NCO(4))]·0.6H(2)O, respectively. All compounds consist of discrete anions and cations with tetrahedrally coordinated Mn(II) atoms. They show paramagnetic behavior as expected for spin-only systems. Melting points are found for several systems below 100 °C classifying them as ionic liquids. Thermal properties are investigated using differential scanning calorimetry (DSC) measurements. The physicochemical properties of density, dynamic viscosity, electrolytic conductivity, and surface tension were measured temperature-dependent of selected samples. These properties are discussed in comparison to similar Co containing systems. An increasing amount of bromide impurity is found to affect the surface tension only up to 3.3%.
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spelling pubmed-68883012019-12-09 Low-Melting Manganese(II)-Based Ionic Liquids: Syntheses, Structures, Properties and Influence of Trace Impurities Peppel, Tim Geppert-Rybczyńska, Monika Neise, Christin Kragl, Udo Köckerling, Martin Materials (Basel) Article The synthesis of more than 10 new magnetic ionic liquids with [MnX(4)](2−) anions, X = Cl, NCS, NCO, is presented. Detailed structural information through single-crystal X-ray diffraction is given for (DMDIm)[Mn(NCS)(4)], (BnEt(3)N)(2)[Mn(NCS)(4)], and {(Ph(3)P)(2)N}(2)[Mn(NCO(4))]·0.6H(2)O, respectively. All compounds consist of discrete anions and cations with tetrahedrally coordinated Mn(II) atoms. They show paramagnetic behavior as expected for spin-only systems. Melting points are found for several systems below 100 °C classifying them as ionic liquids. Thermal properties are investigated using differential scanning calorimetry (DSC) measurements. The physicochemical properties of density, dynamic viscosity, electrolytic conductivity, and surface tension were measured temperature-dependent of selected samples. These properties are discussed in comparison to similar Co containing systems. An increasing amount of bromide impurity is found to affect the surface tension only up to 3.3%. MDPI 2019-11-15 /pmc/articles/PMC6888301/ /pubmed/31731826 http://dx.doi.org/10.3390/ma12223764 Text en © 2019 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
Peppel, Tim
Geppert-Rybczyńska, Monika
Neise, Christin
Kragl, Udo
Köckerling, Martin
Low-Melting Manganese(II)-Based Ionic Liquids: Syntheses, Structures, Properties and Influence of Trace Impurities
title Low-Melting Manganese(II)-Based Ionic Liquids: Syntheses, Structures, Properties and Influence of Trace Impurities
title_full Low-Melting Manganese(II)-Based Ionic Liquids: Syntheses, Structures, Properties and Influence of Trace Impurities
title_fullStr Low-Melting Manganese(II)-Based Ionic Liquids: Syntheses, Structures, Properties and Influence of Trace Impurities
title_full_unstemmed Low-Melting Manganese(II)-Based Ionic Liquids: Syntheses, Structures, Properties and Influence of Trace Impurities
title_short Low-Melting Manganese(II)-Based Ionic Liquids: Syntheses, Structures, Properties and Influence of Trace Impurities
title_sort low-melting manganese(ii)-based ionic liquids: syntheses, structures, properties and influence of trace impurities
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6888301/
https://www.ncbi.nlm.nih.gov/pubmed/31731826
http://dx.doi.org/10.3390/ma12223764
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