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Crystalline, Mixed-Valence Manganese Analogue of Prussian Blue: Magnetic, Spectroscopic, X-ray and Neutron Diffraction Studies

Authors
Franz, Patrick
Ambrus, Christina
Chernyshov, Dmitry
Hostettler, Marc
Hauser, Jürg
Keller, Lukas
Krämer, Karl
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Published in Journal of the American Chemical Society. 2004, vol. 126, no. 50, p. 16472-16477
Abstract The compound of stoichiometry Mn(II)3[Mn(III)(CN)6]2·zH2O (z = 12−16) (1) forms air-stable, transparent red crystals. Low-temperature single crystal optical spectroscopy and single crystal X-ray diffraction provide compelling evidence for N-bonded high-spin manganese(II), and C-bonded low-spin manganese(III) ions arranged in a disordered, face-centered cubic lattice analogous to that of Prussian Blue. X-ray and neutron diffraction show structured diffuse scattering indicative of partially correlated (rather than random) substitutions of [Mn(III)(CN)6] ions by (H2O)6 clusters. Magnetic susceptibility measurements and elastic neutron scattering experiments indicate a ferrimagnetic structure below the critical temperature Tc = 35.5 K.
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FRANZ, Patrick et al. Crystalline, Mixed-Valence Manganese Analogue of Prussian Blue: Magnetic, Spectroscopic, X-ray and Neutron Diffraction Studies. In: Journal of the American Chemical Society, 2004, vol. 126, n° 50, p. 16472-16477. https://archive-ouverte.unige.ch/unige:3247

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Deposited on : 2009-09-21

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