Tellurium compounds molecular parameters

The heterocyclic compounds with vicinal tellurium and oxygen atoms whose molecular and crystal structures have been determined by X-ray analysis are listed in Table 2. It contains data on important structural parameters featuring the stereochemical configuration at the tellurium centers. 

This family of compounds has been extensively studied in recent years. Wheeler has analyzed the electronic structure of Ni9(//4-Te)6(PEt3)8 with EH calculations. Hoffmann and coworkers have also used EH calculations to examine the electronic structure of this molecular cubic cluster to draw relationships with nickel-tellurium extended structures. More recently, we have performed EH and Xa calculations to rationalize the bonding in these clusters, as a function of different parameters such as the electron count or the nature and the size of the different elements constituting the cluster cage. " For symmetry reasons, a localized two-center-two-electron... 

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