Аннотация:The new ternary intermetallic compound Sm3RuSn6 have been synthesized by arc-maelting under argon frompure elements. The crystal structure of new ternary phase were assigned to known structure type based on XPD Rietveld refinements - Y3CoSn6, Sp.Gr. Cmcm , a=4.4139(3),b=16.6102(8), c=13.2827(7)A. The structure is similar with the investigated earlier compound of same comp[osition with cerium - Ce3RuSn6.