Jul 6 – 10, 2015
Institute of Nuclear Physics PAN, Kraków
Europe/Warsaw timezone

Tuning of magnetic ordering temperatures of Mn2Nb 3D chiral molecular magnet by pressure and guest molecules

Jul 7, 2015, 8:30 PM
1h 30m
Olimpia Conference Room (Crown Piast Hotel)

Olimpia Conference Room

Crown Piast Hotel

Board: 17


Mr Bernard Czarnecki (Faculty of Chemistry, Jagiellonian University, Kraków)


Over the recent years an intensive research provided examples of synthesis of heterometalic molecular materials with paramagnetic [M(CN)8]n− (M = NbIV, MoIV,V, WIV,V) ions, 3d metal ions and organic ligands. Such assemblies [1,2] proves the great potential for applications of cyano-bridged coordination networks and in the future this could lead to obtaining room temperature octacyanometalate-based magnets tunable by light, temperature, pressure or/and solvent[1,2]. Additionally with development of organic chemistry it is possible, by incorporating enantiopure ligands, to obtain chiral coordination networks. Co-existence of both magnetic and optical properties could give us a chance to examine thoroughly physical phenomena like magneto-chiral dichroism and magnetically induced second harmonic generation. Furthermore magnetic properties can be tuned by pressure-induced structural changes that cause the alteration of magnetic interaction between metal centres[1] leading to novel molecular switches.

Here we present 3D networks of {[MnII(S/R/rac-1,2-diaminopropane)2]2[NbIV(CN)8]•3H2O}n and its dependence of the magnetic ordering temperature on pressure and uptake/removal of guest molecules. The collected information allows to discuss the influence of the coordination skeleton on physical properties of the compound.


[1] Fitta M., Bałanda M., Pełka R., Konieczny P., Pinkowicz D., Sieklucka B., Journal of Physics Condensed Matter, 2013, 25 ,49

[2] Pinkowicz D., Podgajny R., Gaweł B., Nitek W., Łasocha W., Oszajca M., Czapla M., Makarewicz M., Bałanda M., Sieklucka B., Angew. Chem. Int. Ed., 2011, 50, 3973-3977.

Primary author

Mr Bernard Czarnecki (Faculty of Chemistry, Jagiellonian University, Kraków)


Prof. Barbara Sieklucka (Faculty of Chemistry, Jagiellonian University, Kraków) Dr Dawid Pinkowicz (Faculty of Chemistry, Jagiellonian University, Kraków) Dr Wojciech Nitek (Faculty of Chemistry, Jagiellonian University, Kraków)

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