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Related Experiment Videos

The trigonal-bipyramidal triiodothallium(III) complex [TlI(3)[(CH(3))(2)SO]2].

Guibin Ma1, Andreas Fischer, Julius Glaser

  • 1Department of Chemistry, Shanxi University, Taiyuan 030006, People's Republic of China.

Acta Crystallographica. Section C, Crystal Structure Communications
|March 1, 2002
PubMed
Summary

Researchers crystallized bis(dimethyl sulfoxide)triiodothallium(III) using thallium(I) iodide and iodine in DMSO. The resulting thallium(III) complex features a trigonal bipyramidal structure with iodide and DMSO ligands.

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Area of Science:

  • Inorganic Chemistry
  • Crystallography
  • Coordination Chemistry

Background:

  • Thallium halides are known to undergo redox reactions with halogens.
  • Dimethyl sulfoxide (DMSO) is a versatile coordinating solvent used in inorganic synthesis.

Purpose of the Study:

  • To synthesize and characterize the novel compound bis(dimethyl sulfoxide)triiodothallium(III).
  • To determine the crystal structure of the synthesized thallium(III) complex.

Main Methods:

  • Crystallization from equimolar amounts of thallium(I) iodide and iodine in a dimethyl sulfoxide solution.
  • X-ray diffraction analysis to elucidate the crystal structure.

Main Results:

  • The formation of a thallium(III)-iodo complex, [TlI(3)(C(2)H(6)OS)(2)], as a DMSO solvate.

Related Experiment Videos

  • The crystal structure reveals a trigonal bipyramidal geometry around the thallium(III) center.
  • The thallium(III) ion is coordinated by three iodide ligands in the equatorial plane and two O-coordinated DMSO molecules in the axial positions.

    • Conclusions:

    • The synthesis and structural characterization of bis(dimethyl sulfoxide)triiodothallium(III) were successful.
    • The compound exhibits a distorted trigonal bipyramidal coordination geometry.
    • The crystallographic data provide insights into the coordination behavior of thallium(III) with iodide and DMSO.