Suboxides of Rb and Cs

The oxide TijO has a structure closely rdated to the anti-Bil3 layer structure which has been described in Chapter 4. 

The crystal structure of CU2O (and the tsostructural Ag20) has been described in Chapter 3 together with other structures related to the diamond net. 

Evidence for the existence of In O in the solid state is not satisfactory, ) and the compound described as Sm20 is almost certainly SmH2.  

The anti-Cdl2 structure of Ti20 is mentioned in the later section on Oxides of titanium . 

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