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Switching of the Magnetocaloric Effect of MnII Glycolate by Water Molecules

Authors

  • Yan-Cong Chen,

    1. Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry & Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275 (P. R. China)
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  • Fu-Sheng Guo,

    1. Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry & Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275 (P. R. China)
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  • Jun-Liang Liu,

    1. Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry & Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275 (P. R. China)
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  • Ji-Dong Leng,

    1. Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry & Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275 (P. R. China)
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  • Dr. Peter Vrábel,

    1. Centre of Low Temperature Physics Faculty of Science, P.J. Šafárik University and Institute of Experimental Physics SAS, Park Angelinum 9, 041 54 Košice (Slovakia)
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  • Prof. Dr. Martin Orendáč,

    1. Centre of Low Temperature Physics Faculty of Science, P.J. Šafárik University and Institute of Experimental Physics SAS, Park Angelinum 9, 041 54 Košice (Slovakia)
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  • Dr. Jan Prokleška,

    1. Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Charles University, Ke Karlovu 5, CZ-12116 Prague 2 (Czech Republic)
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  • Prof. Dr. Vladimír Sechovský,

    1. Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Charles University, Ke Karlovu 5, CZ-12116 Prague 2 (Czech Republic)
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  • Prof. Dr. Ming-Liang Tong

    Corresponding author
    1. Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry & Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275 (P. R. China)
    • Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry & Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275 (P. R. China)

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Abstract

The transformation of MnII glycolates (glc) between the three-dimensional coordination polymer [Mn(glc)2]n (1) and discrete mononuclear phase [Mn(glc)2(H2O)2] (2) can be reversibly switched by water molecules, which dramatically change the magnetocaloric effect (MCE) of MnII glycolates from the maximum of 6.9 J kg−1 K−1 in 1 to 60.3 J kg−1 K−1 in 2. This case example reveals that the effect of magnetic coupling on MCE plays a dominant role over that of other factors such as magnetic density for 3d-type magnetic refrigerants.

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