Naked Tl anion clusters

The heavier elements of Group 13, in particular thallium, are able to form discrete naked clusters with alkali metals. Table 13.7.1 lists some examples of Tl - naked anion clusters, and Fig. 13.7.3 shows their structures. 

Composition Anion Structure in Cluster Bond Bonding  

Na3 K8TI13 Tl13n- (g) Centered 7h 23 10T1-T1-T1 3c-2e bonds 3T1-T1 2c-2e bonds 

Greenwood and A. Earnshaw, Chemistry of the Elements, 2nd edn., Butterworth Heinemann, Oxford, 1997. 

Housecroft and A. G. Sharpe, Inorganic Chemistry, 2nd edn., Prentice-Hall, London, 2004. 

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