2YCl3 + 6C2H5MgBr + 2(C2H5)2O → 2Y(C2H5)3 * O(C2H5)2 + 3MgBr2 + 3MgCl2
The reaction between the yttrium trichloride, bromide of ateline and diethyl ether with the formation of adduct of triathlete and diethyl ether, bromide of magnesium and magnesium chloride.