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Structural chemistry of vanadium oxides with open frameworks.

Zavalij1, Whittingham

  • 1Materials Research Center and Department of Chemistry, SUNY at Binghamton, Binghamton, NY 13902-6016, USA. zavalij@binghamton.edu

Acta Crystallographica. Section B, Structural Science
|August 6, 2000
PubMed
Summary

This review analyzes open-structure vanadium oxides, classifying ~60 frameworks by coordination polyhedra and structural complexity. It details vanadium-oxygen polyhedra metamorphosis and combinatorial structure deduction.

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Area of Science:

  • Materials Science
  • Inorganic Chemistry
  • Crystallography

Background:

  • Vanadium oxides with open structures are crucial in catalysis and materials science.
  • Understanding their crystal chemistry is key to designing new materials.
  • Previous classifications often focused on specific structural motifs.

Purpose of the Study:

  • To provide a comprehensive crystal-chemical and topographical analysis of pure vanadium oxides with open structures.
  • To propose a systematic classification and notation for vanadium oxide frameworks.
  • To analyze the coordination polyhedra of vanadium-oxygen and their transformations.

Main Methods:

  • Review of existing literature on vanadium oxide structures.
  • Structural classification based on a polyhedra --> chain --> layer --> framework hierarchy.

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  • Analysis of coordination polyhedra (tetrahedron, trigonal bipyramid, square pyramid, octahedron).
  • Combinatorial deduction of possible framework structures.

    • Main Results:

    • Approximately 60 types of vanadium oxide frameworks identified and classified into five classes and 14 subclasses.
    • Detailed analysis of vanadium-oxygen coordination polyhedra and their metamorphosis.
    • A systematic notation for describing vanadium oxide framework structures proposed.
    • Combinatorial analysis predicting potential structures for common framework types.

    Conclusions:

    • The proposed classification provides a unified framework for understanding vanadium oxide structures.
    • The analysis of polyhedra metamorphosis offers insights into structure-property relationships.
    • This work serves as a foundation for further research into novel vanadium oxide materials.