Structure prototypes rutile

Figure 1.3.3 Nets with common topologies and their nomenclature (see text). The symbols are related to prototypical structures or lattices as follows SrSi2 (srs), NbO (nbo), primitive cubic (pcu), body centered cubic (bcu), face centered cubic (fcu), sodalite (sod), ThSi2 (ths), CdS04 (cds), quartz (qtz), SrAI2 (sra), PtS (pts), rutile (rtl).

As this review is intended to illustrate, the interplay between metal and oxygen leads to a richness of reactivity that is reflected in the surface structure of oxides. Much of this richness can be rationalised as varying proportions of ionic and covalent character in the metal-oxygen bonding, and is manifest in a variety of non-stoichiometric surfeces. We therefore focus on the prototypical transition metal oxide smface rutile Ti(>2 (1 1 0). This is contrasted with computational results for one of the most widely-studied p-block oxide surfaces - corundum Al2O3-(0 0 0 1) - and we refer also to computational surface studies on oxides of ruthenium, iron, vanadium, tin and silver, as well as ternary oxides. 

The structure of Ti02 (rutile) is a prototype structure . What does this mean What are the coordination environments of the Ti and O centres Give two other examples of compounds that adopt the same structure as Ti02. 

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