Image Trisulfane molecule

TLF ID R6847

This is a colour image of a model of a molecule of trisulfane, Hā‚‚Sā‚ƒ. In this model, atoms are represented by coloured spheres held together by grey rods, representing covalent bonds. The trisulfane molecule consists of three sulfur atoms (the yellow spheres) and two hydrogen atoms (the grey-white spheres).



Educational details

Educational value
  • Trisulfane is a yellow liquid that does not occur naturally and is of interest mainly to chemists.
  • The atoms in the molecule are connected by single covalent bonds. A covalent bond is formed when atoms share electrons and a single bond has two shared electrons, one contributed by each atom. Because sulfur atoms are able to contribute two electrons, they are able to participate in two covalent bonds, whereas each hydrogen atom has only one electron to share and so can form only one bond.
  • The shape of the molecule is not fixed because the single bonds between the sulfur atoms allow the hydrogen atoms to rotate around them as axes.
  • The type of model shown here, called a ball-and-stick model, is one of several ways of modelling molecules. This type is useful because it clearly shows the geometry of the molecule and the order (single, double or triple) of the bonds. However, because 'sticks' are used to represent bonds, this type of model does not represent the actual shape of the molecule as well as 'space-filling' models do.
Year level

7; 8; 9; 10; 11; 12

Learning area
  • science
Strand
  • Science/Science understanding

    Other details

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    • Publisher
    • Date of contribution: 20 Sep 2013
    • Organisation: Education Services Australia
    • Address: Melbourne VIC 3000 Australia
    • URL: http://www.esa.edu.au/
    • Copyright holder
    • Organisation: Education Services Australia
    • Address: Melbourne VIC 3000 Australia
    • URL: http://www.esa.edu.au/
    • Remarks: Copyright Education Services Australia Ltd
    • Author
    • Date of contribution: 2006
    • Organisation: Education Services Australia
    • Address: Melbourne VIC 3000 Australia
    • URL: http://www.esa.edu.au/
    • Remarks: creator
    • Content provider
    • Organisation: Education Services Australia
    • Address: Melbourne VIC 3000 Australia
    • URL: http://www.esa.edu.au/
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    • © Education Services Australia Ltd, 2013, except where indicated under Acknowledgments