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- Title
A novel representative in the rare family of trivanadates, KMn<sub>2</sub>V<sub>3</sub>O<sub>10</sub>: synthesis, crystal structure and magnetic properties.
- Authors
Yakubovich, Olga; Shvanskaya, Larisa; Pchelkina, Zlata; Dimitrova, Olga; Volkov, Anatoliy; Volkova, Olga; Vasiliev, Alexander
- Abstract
Potassium dimanganese trivanadate, KMn2V3O10, was synthesized hydrothermally and its crystal structure was determined from single‐crystal X‐ray diffraction data. The novel phase crystallizes with triclinic symmetry in space group with unit‐cell parameters of <italic>a</italic> = 6.912 (5), <italic>b</italic> = 6.993 (5), <italic>c</italic> = 9.656 (5) Å, α = 101.858 (5), β = 102.627 (5), γ = 100.669 (5)°, <italic>Z</italic> = 2 and <italic>V</italic> = 432.6 (5) Å3. Its structure is built from tetramers of MnO6 octahedra sharing edges and trimers of VO4 tetrahedra sharing vertices. These main structural fragments are linked in a three‐dimensional framework with channels occupied by potassium ions. The transformation of this structure to that of interconnected NaCa3Mn(V3O10)(V2O7) is discussed. The title compound orders antiferromagnetically at <italic>T</italic>N = 8.2 K due to the magnetic exchange interactions between tetramers of Mn octahedra through VO4 tetrahedra. First‐principles calculations show the magnetic couplings <italic>via</italic> Mn—O—Mn and Mn—O—V—O—Mn pathways.
- Subjects
CRYSTAL structure; X-ray diffraction
- Publication
Acta Crystallographica Section B: Structural Science, Crystal Engineering & Materials, 2018, Vol 74, Issue 1, p97
- ISSN
2052-5192
- Publication type
Article
- DOI
10.1107/S205252061701811X