When a co-ordination compound ${\mathrm{CrCl}}_3.6{\mathrm{H}}_2\mathrm{O}$ is mixed with ${\mathbf{AgNO}}_3$, 2 moles of AgCl are precipitated per mole of the compound. Write 
(i) Structural formula of the complex. 
(ii) IUPAC name of the complex
(iii)Write the chemical reactions involved.