Reversible Topotactic Redox Reactions of Solids by Electron/Ion Transfer


  • Prof. Dr. Robert Schöllhorn

    Corresponding author
    1. Anorganisch-chemisches Institut der Universität, Gievenbecker Weg 9–11, D-4400 Münster (Germany)
    • Anorganisch-chemisches Institut der Universität, Gievenbecker Weg 9-11, D-4400 Münster (Germany)
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  • The term “topotactic” refers to solid state reactions which are characterized by the fact that defined lattice matrix elements specific to the original solid phase remain unaltered in the course of the reaction with respect to their structural organization (for semantic aspects cf. [13]).


Solids having suitable structural and electronic properties are able to form intercalation compounds by reversible redox reactions at room temperature via topotactic electron/ion transfer processes. The host lattices range from inorganic solids with different structural dimensionality to organic molecular solids. Similarly, depending on the host lattice type, the guest species may vary from protons and metal ions to large inorganic and organic molecular ions. The possibilities of a systematic “tailoring” of new stable or metastable compounds, the controlled modification of physical properties of solids, and the technical application of electronic/ionic conductors, provide a wide and attractive field for academic and applied research in an interdisciplinary area that involves solid state chemistry and physics, molecular chemistry, electrochemistry, and interface science.