An Oxygen-Centred Tetranuclear Tantalum Cluster: Ta₄O(Te₂)₄TeI₄

Tetratantalum nonatellurium oxide tetraiodide exhibits a one-dimensional structure containing distorted tetrahedral oxygen-centred tetranuclear clusters of Ta atoms. Each of the four shorter Ta-Ta bonds is bridged by a Te₂ group, and each Ta atom is also bonded to a terminal I atom and a [mu]₄ O atom. A [mu]₄ Te atom connects two neighbouring clusters to form a one-dimensional chain along the b axis. The chains are held together by van der Waals interactions.

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