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Nonapotassium trialuminium hexa-phosphate.

Zuoliang Liu1, Guochun Zhang, Jianxiu Zhang

  • 1Key Laboratory of Functional Crystal and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.

Acta Crystallographica. Section E, Structure Reports Online
|May 18, 2011
PubMed
Summary

The crystal structure of K(9)Al(3)(PO(4))(6) reveals an anionic framework of linked aluminum-oxygen and phosphate tetrahedra. Potassium atoms fill channels within this structure, exhibiting coordination numbers of 6, 7, or 8.

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Area of Science:

  • Solid-state chemistry
  • Inorganic chemistry
  • Crystallography

Background:

  • Understanding the structural intricacies of potassium aluminum phosphates is crucial for materials science.
  • The arrangement of anionic tetrahedra dictates the overall framework and properties of inorganic compounds.

Purpose of the Study:

  • To elucidate the detailed crystal structure of the title compound, K(9)Al(3)(PO(4))(6).
  • To describe the coordination environment of potassium ions and the nature of the anionic substructure.

Main Methods:

  • Single-crystal X-ray diffraction analysis was employed to determine the atomic arrangement.
  • Structural parameters, including bond lengths, coordination numbers, and atomic positions, were analyzed.

Main Results:

  • The anionic substructure is composed of interlinked [PO(4)] and [AlO(4)] tetrahedra.
  • Each [AlO(4)] tetrahedron shares oxygen atoms with four distinct [PO(4)] tetrahedra.
  • Potassium (K) atoms occupy channels along the [10] direction with coordination numbers of 6, 7, or 8.

Conclusions:

  • The described structural model provides a fundamental understanding of K(9)Al(3)(PO(4))(6).
  • The arrangement of tetrahedra and potassium ions suggests potential applications in areas requiring specific ion-hosting capabilities.