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Open-framework ammonium transition metal fluorophosphates with a Kagomé lattice network: synthesis, structure and magnetic properties
- Source :
- Dalton transactions (Cambridge, England : 2003). 49(3)
- Publication Year :
- 2019
-
Abstract
- Two open-framework transition metal fluorophosphates (NH4)M3(PO3F)2(PO2F2)F2 (M = Mn and Co) have been synthesized under fluoride-rich hydrothermal conditions at 493 K. The structure consists of triplets of face-sharing trans-MO4F2 octahedra linked by PO3F groups to form 2D layers. These 2D layers with formula [M3(PO3F)2O2F2]3- in the ab plane are bridged by PO2F2 groups to generate a 3D open framework with 1D channels filled with ammonium cations. The XPS spectra suggested the existence of Mn(ii) and Co(ii) in the corresponding compounds. Further, the XPS F 1s spectra indicated that fluorine anions bridged both the M and P centres. The two compounds feature transition metal layers with a staircase Kagome network. This topology promotes magnetic frustration, which exhibits a canted antiferromagnetic ground state (Tc = 8.0 K for Mn and Tc = 9.2 K for Co).
- Subjects :
- Materials science
chemistry.chemical_element
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Spectral line
Hydrothermal circulation
0104 chemical sciences
Inorganic Chemistry
Crystallography
Octahedron
chemistry
Transition metal
X-ray photoelectron spectroscopy
Fluorine
Antiferromagnetism
0210 nano-technology
Ground state
Subjects
Details
- ISSN :
- 14779234
- Volume :
- 49
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- Dalton transactions (Cambridge, England : 2003)
- Accession number :
- edsair.doi.dedup.....57742e0d9895ba12f8012d2d21dae2f8