AbstractDuring the investigation of the binary system Be−Ru two new phases – Be₇Ru₄ and Be₁₂Ru₇ – with similar compositions (63.6 at. % Be and 63.2 at. % Be, respectively), are discovered. They both represent new structural prototypes. The phases are located between Be₂Ru (Fe₂P‐type structure) and Be₃Ru₂ (U₃Si₂‐type structure) in the phase diagram. This explains why their crystal structures, solved and refined from single crystal X‐ray diffraction data, are described as 2D intergrowth of Fe₂P and U₃Si₂ motives. The calculated electronic density of stats (DOS) reveals pronounced minima in the vicinity of the Fermi level for both compounds. Position‐space analysis of chemical bonding exhibits the formation of three‐ and four‐atomic polar bonds, involving both, Ru and Be, atoms, and a strong charge transfer from Be to the more electronegative Ru.