# What kinds of titanium complexes can be made?

Some straightforward examples are ${\text{TiCl}}_{4}$ (tetrachlorotitanium(IV)) and ["Ti"("CO")_6]^(2-) (hexacarbonyltitanate(II)). The former has a $+ I V$ oxidation state on titanium, and the latter has a $- I I$ oxidation state. These you might be able to imagine. The former is tetrahedral, and the latter is octahedral.