%0 Journal Article %A Franz, Patrick %A Ambrus, Christina %A Hauser, Andreas %A Chernyshov, Dmitry %A Hostettler, Marc %A Hauser, Jürg %A Keller, Lukas %A Krämer, Karl %A Stoeckli-Evans, Helen %A Pattison, Philip %A Bürgi, Hans-Beat %A Decurtins, Silvio %T Crystalline, Mixed-Valence Manganese Analogue of Prussian Blue: Magnetic, Spectroscopic, X-ray and Neutron Diffraction Studies %J Journal of the American Chemical Society %@ 0002-7863 %V 126 %N 50 %P 16472-16477 %D 2004 %U http://pubs.acs.org/cgi-bin/abstract.cgi/jacsat/2004/126/i50/abs/ja0465451.html %R 10.1021/ja0465451 %U http://archive-ouverte.unige.ch/unige:3247 %X 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.