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Discovery and Synthesis Optimization of Isoreticular Al(III) Phosphonate-Based Metal-Organic Framework Compounds Using High-Throughput Methods
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Discovery and Synthesis Optimization of Isoreticular Al(III) Phosphonate-Based Metal-Organic Framework Compounds Using High-Throughput Methods

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Manganese(III) fluorophosphate frameworks.

Jennifer A Armstrong1, Edward R Williams, Mark T Weller

  • 1Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK.

Dalton Transactions (Cambridge, England : 2003)
|December 4, 2012
PubMed
Summary
This summary is machine-generated.

Nine novel manganese(III) fluorophosphates were synthesized hydrothermally. These compounds exhibit unique chain, layer, and framework structures with Jahn-Teller distorted manganese(III) octahedra, stabilized in fluoride-rich conditions.

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Area of Science:

  • Inorganic Chemistry
  • Materials Science
  • Crystal Engineering

Background:

  • Manganese(III) fluorophosphates are an underexplored class of inorganic compounds.
  • Hydrothermal synthesis offers a versatile route to novel inorganic structures.
  • Fluoride-rich environments can stabilize unusual oxidation states and coordination geometries.

Purpose of the Study:

  • To synthesize and structurally characterize new manganese(III) fluorophosphates.
  • To investigate the structural diversity arising from hydrothermal synthesis in fluoride-rich media.
  • To explore the coordination chemistry of manganese(III) in these novel compounds.

Main Methods:

  • Hydrothermal synthesis using MnF(3), HPF(6), and monovalent metal fluorides.
  • Single crystal X-ray diffraction for detailed structural analysis.
  • Characterization of coordination environments and structural motifs.

Main Results:

  • Successfully synthesized nine new manganese(III) fluorophosphates.
  • Discovered novel chain, layer, and 3D framework structures.
  • Observed Jahn-Teller distorted Mn(O,F)(6) octahedra with varying fluoride coordination (n ≈ 2.8).
  • Identified inter-layer spaces and channels lined with terminal fluoride anions.

Conclusions:

  • Hydrothermal synthesis in fluoride-rich media is effective for creating complex manganese(III) fluorophosphate structures.
  • The observed structural features highlight unusual coordination and bonding in these materials.
  • These findings expand the known structural chemistry of manganese fluorophosphates.