Polyatomic Chalcogen Polymers and Polymeric Tellurium Cations

6 Polyatomic Chalcogen Polymers and Polymeric Tellurium Cations 

The ordering principle of this section is different to the preceding section on the isolated molecules or molecular ions. We start with the structures of the elements and then classify the polymeric Te structures by the number of atoms in the constituting homocycles, i.e. four-, five- and six-membered rings. 

2 Polymers that Contain Te4 Squares Te42+, Te72+ and Te102+ 

4 Polymers that Contain Te6 Homocycles Te72+ and Te82+ 

Infinite helices are the building blocks of all polymeric neutral chalcogen structures. For Se and Te these semimetallic grey forms are the ground 

The structures of these polymeric Te/ , Tct and Tcio cations exhibit the same basic structural features  

The first of those polymeric structures to be observed was that of Tev[AsF6]2. ° Its structure is related to that of polymeric such 

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