Cationic complexes: A complex in which the complex ion carries a net positive charge is called a cationic complex.
Exa $\rightarrow\left[\mathrm{Pt} \mathrm{Br}_2\left(\mathrm{NH}_3\right)_4\right] \mathrm{Br}_2$
$\left[\mathrm{Pt} \mathrm{Br}_2\left(\mathrm{NH}_3\right)_4\right]^{2+}$ and $\mathrm{Br}$
Complex cation