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The Family of A6M2O6 Oxometalates: Synthesis and Crystal Structure Determination of Cs6Mn2O6, Magnetic Exchange within Dimeric Poly-oxoanions, and Classification of Crystal Structures

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Thakur,  Gohil S.
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Nuss, J., Kremer, R. K., Thakur, G. S., & Jansen, M. (2019). The Family of A6M2O6 Oxometalates: Synthesis and Crystal Structure Determination of Cs6Mn2O6, Magnetic Exchange within Dimeric Poly-oxoanions, and Classification of Crystal Structures. Zeitschrift für anorganische und allgemeine Chemie, 645, 882-887. doi:10.1002/zaac.201900026.


Cite as: https://hdl.handle.net/21.11116/0000-0003-FBEA-B
Abstract
The new compound Cs6Mn2O6 was synthesized via the azide/nitrate route. According to single-crystal X-ray analysis (P1; a = 695.74(7), b = 733.24(7), c = 735.12(7) pm, α = 78.559(4), β = 62.685(3), γ = 88.788(4)°; 2705 independent data, R1 = 0.041), the anionic part of the compound consists of dimeric Mn2O6 units, formed by edge sharing of two MnO4 polyhedra of a shape intermediate between tetrahedral and square planar. The crystal structure is singular, however, can be related to several oxides of the same general formula by group-subgroup symmetry descent. The magnetic properties of Cs6Mn2O6 have been simulated by an antiferromagnetic dimer model of spin S = 2 entities, considering a small temperature dependence of the spin exchange parameters. © 2019 WILEY-VCH Verlag GmbH Co. KGaA, Weinheim