title: Crystalline, mixed-valence manganese analogue of prussian blue: magnetic, spectroscopic, X-ray and neutron diffraction studies.
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.
authors.affiliation: Departement für Chemie und Biochemie, Laboratorium für Kristallographie, Universität Bern, Freiestrasse 3, CH-3012 Bern, Switzerland.
authors.forename: Patrick
authors.initials: P
authors.lastname: Franz
authors.forename: Christina
authors.initials: C
authors.lastname: Ambrus
authors.forename: Andreas
authors.initials: A
authors.lastname: Hauser
authors.forename: Dmitry
authors.initials: D
authors.lastname: Chernyshov
authors.forename: Marc
authors.initials: M
authors.lastname: Hostettler
authors.forename: Jürg
authors.initials: J
authors.lastname: Hauser
authors.forename: Lukas
authors.initials: L
authors.lastname: Keller
authors.forename: Karl
authors.initials: K
authors.lastname: Krämer
authors.forename: Helen
authors.initials: H
authors.lastname: Stoeckli-Evans
authors.forename: Philip
authors.initials: P
authors.lastname: Pattison
authors.forename: Hans-Beat
authors.initials: HB
authors.lastname: Bürgi
authors.forename: Silvio
authors.initials: S
authors.lastname: Decurtins