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Pandora's box of binary tungsten iodides.
Markus Ströbele1, Hans-Jürgen Meyer1
1Abteilung für Festkörperchemie und Theoretische Anorganische Chemie, Institut für Anorganische Chemie, Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany. markus.stroebele@uni-tuebingen.de juergen.meyer@uni-tuebingen.
Dalton Transactions (Cambridge, England : 2003)
|December 22, 2018
Summary
A new synthetic method has revealed over twenty new binary tungsten iodide compounds, expanding metal halide chemistry. These discoveries, dependent on precise pressure and temperature, offer potential for advanced phosphorescent materials.
Area of Science:
- Inorganic Chemistry
- Materials Science
- Solid-State Chemistry
Background:
- Binary tungsten iodides are challenging to synthesize due to low reaction rates at stable temperatures.
- Previous methods like halide exchange and tungsten hexacarbonyl reactions yielded limited compounds.
Purpose of the Study:
- To explore new synthetic routes for binary tungsten iodides.
- To investigate the structural diversity and formation conditions of these compounds.
Main Methods:
- Development of a novel synthetic method under controlled pressure and temperature.
- Utilizing thermal scanning under variable iodine partial pressures.
- Characterization of crystal structures and transformation reactions.
Main Results:
- Discovery of over twenty new binary tungsten iodide compounds.
- Identification of diverse structural motifs including trigonal, tetrahedral, square pyramidal, and octahedral cluster cores.
- Understanding the critical role of pressure and temperature in compound formation.
Conclusions:
- A new synthetic approach has significantly expanded the known binary tungsten iodide system.
- These compounds exhibit novel structures and have potential applications as phosphorescent materials and singlet oxygen generators.
- Advances impact the field of octahedral cluster chemistry.