[en] The SrCl₂-EuCl₂ and SrCl₂-EuCl₃ systems were investigated over the full composition ranges by the Guinier powder X-ray diffraction technique. In the strontium chloride-europium dichloride system the solubility from the both ends of reactants was found when fast cooling of the melt was used. In the strontium chloride-europium trichloride system a solid solution for the composition region up to 20 mol per cent of EuCl₃ and two new intermediate chlorides, Sr₄EuCl₁₁ and Sr₉Eu₅Cl₃₃, were observed. The compounds crystallize in orthorhombic symmetry with lattice parameters of 7.220(2), 35.15(1), 6.790(4) and hexagonal 12.854(4) and 24.702(8), respectively. (author)