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In this work we report the synthesis and crystal structure of the compounds La 6 Co 13 In, La 5-δ Co x In 3-x and La 3 Co x In 1-x. From X-ray single crystal diffraction data: La 6 Co 13 In crystallizes in the structure type of Nd 6 Fe 13 Si, I4/mcm, Z = 4, a = 8.1190(4), c = 23.7022(15) Å; La 5-δ Co x In 3-x in the tetragonal structure type of W 5 Si 3 , I4/mcm, Z = 4, a = 12.9644(3), c = 6.1553(2) Å at δ = 0.125(15) and x = 0.06(3), and a = 12.9976(5), c = 6.1229(7) Å at δ = 0.275(15) and x = 0.10(3); La 3 Co x In 1-x is the solid solution of Co in La 3 In, which crystallizes in the cubic structure type of Cu 3 Au, Pm   m, Z = 1, a = 5.0762(1) Å at x = 0.05.