Appearance black solid | ||
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Tantalum pentaiodide is the inorganic compound with the formula Ta2I10. It is a black, moisture-sensitive, diamagnetic solid.
Synthesis and structure
Tantalum pentaiodide forms from the reaction of metallic tantalum with excess iodine. It can also be prepared by heating tantalum pentoxide with aluminium triiodide:
Its structure has been verified by X-ray crystallography, which reveals an edge-shared bioctahedral structure, as observed for many pentahalides of Nb and Ta.
References
Tantalum pentaiodide Wikipedia(Text) CC BY-SA