3 years ago

Three-Dimensional (3-D) Ferromagnetic Network of Mn12 Single-Molecule Magnets: Subtle Environmental Effects and Switching to Antiferromagnetic

Three-Dimensional (3-D) Ferromagnetic Network of Mn12 Single-Molecule Magnets: Subtle Environmental Effects and Switching to Antiferromagnetic
Wolfgang Wernsdorfer, Adeline D. Fournet, Khalil A. Abboud, Kylie J. Mitchell, George Christou
[Mn12O12(O2CC6H4-p-F)16(H2O)4]·8MeCN (2·8MeCN) forms a 3-D ferromagnetic network resulting from extensive intermolecular C−H···F hydrogen-bonding. Drying to 2 decreases the cell volume and switches the network to antiferromagnetic, which is reversed by hydration to 2·3H2O. Magnetic properties accompanying the changes are described, including hysteresis loops for 2·8MeCN showing a small exchange bias that is unexpectedly antiferromagnetic, assigned to Jz components of the intermolecular interactions. The results provide insights into the sensitivity of the magnetic properties to environmental perturbations.

Publisher URL: http://dx.doi.org/10.1021/acs.inorgchem.7b01676

DOI: 10.1021/acs.inorgchem.7b01676

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