A platinum complex of ammonia and chlorine produces four ions per molecule in the solution. It is:

$\left[\mathrm{Pt}{\left({\mathrm{NH}}_3\right)}_5\mathrm{Cl}\right]{\mathrm{Cl}}_3$ produces four ions per molecule
$\left[\mathrm{Pt}{\left({\mathrm{NH}}_3\right)}_6\right]{\mathrm{Cl}}_4$ produces five ions per molecule
$\left[\mathrm{Pt}{\left({\mathrm{NH}}_3\right)}_2{\mathrm{Cl}}_4\right]$ produces 0 ion per molecule.
$\left[\mathrm{Pt}{\left({\mathrm{NH}}_3\right)}_4{\mathrm{Cl}}_2\right]{\mathrm{Cl}}_2$ produces three ions per molecule in the solution.