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Article

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

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Leibniz-Institut für Katalyse e.V. (LIKAT), Heterogene Photokatalyse, Albert-Einstein-Str. 29a, 18059 Rostock, Germany
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Instytut Chemii, Uniwersytet Śląski w Katowicach, Szkolna 9, 40-006 Katowice, Poland
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Institut für Chemie, Anorganische Festkörperchemie, Universität Rostock, Albert-Einstein-Str. 3a, 18059 Rostock, Germany
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Institut für Chemie, Technische Chemie, Universität Rostock, Albert-Einstein-Str. 3a, 18059 Rostock, Germany
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Department Life, Light and Matter, Universität Rostock, 18051 Rostock, Germany
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Leibniz-Institut für Katalyse e.V. (LIKAT), Polymerchemie und Katalyse, Albert-Einstein-Str. 29a, 18059 Rostock, Germany
*
Authors to whom correspondence should be addressed.
Materials 2019, 12(22), 3764; https://doi.org/10.3390/ma12223764
Received: 24 October 2019 / Revised: 11 November 2019 / Accepted: 13 November 2019 / Published: 15 November 2019
(This article belongs to the Special Issue Ionic Liquids: A Greener Approach in Catalysis)
The synthesis of more than 10 new magnetic ionic liquids with [MnX4]2− anions, X = Cl, NCS, NCO, is presented. Detailed structural information through single-crystal X-ray diffraction is given for (DMDIm)[Mn(NCS)4], (BnEt3N)2[Mn(NCS)4], and {(Ph3P)2N}2[Mn(NCO4)]·0.6H2O, 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%. View Full-Text
Keywords: manganese; ionic liquid; crystal structure; physical properties; trace impurities manganese; ionic liquid; crystal structure; physical properties; trace impurities
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MDPI and ACS Style

Peppel, T.; Geppert-Rybczyńska, M.; Neise, C.; Kragl, U.; Köckerling, M. Low-Melting Manganese(II)-Based Ionic Liquids: Syntheses, Structures, Properties and Influence of Trace Impurities. Materials 2019, 12, 3764. https://doi.org/10.3390/ma12223764

AMA Style

Peppel T, Geppert-Rybczyńska M, Neise C, Kragl U, Köckerling M. Low-Melting Manganese(II)-Based Ionic Liquids: Syntheses, Structures, Properties and Influence of Trace Impurities. Materials. 2019; 12(22):3764. https://doi.org/10.3390/ma12223764

Chicago/Turabian Style

Peppel, Tim, Monika Geppert-Rybczyńska, Christin Neise, Udo Kragl, and Martin Köckerling. 2019. "Low-Melting Manganese(II)-Based Ionic Liquids: Syntheses, Structures, Properties and Influence of Trace Impurities" Materials 12, no. 22: 3764. https://doi.org/10.3390/ma12223764

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