Coordination Compounds

$\mathrm{K}_3\left[\mathrm{Cr}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]$, Potassium trioxalatochromate (III)

$\left[\mathrm{CoCl}_2(\mathrm{en})_2\right] \mathrm{Cl}$, Dichloridobis (ethane - 1,2 - dimine) cobalt (III) chloride

$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{CO}_3\right)\right] \mathrm{Cl}$, Pentaamine carbonylcobalt (III) chloride

$\left[\mathrm{Pt}\left(\mathrm{NH}_3\right)_2 \mathrm{Cl}\left(\mathrm{NO}_2\right)\right]$ Diamine chloridonitrito - N - Platinum (II)