Intermetallics La9Ru4In5 and Ce9Ru4Ga5 with new types of structures. Synthesis, crystal structures, physical properties

► Ternary intermetallics Ce9Ru4Ga5 and La9Ru4In5 with new structural types. ► Unusual short Ce-Ru contacts in Ce9Ru4Ga5. ► The average valence of cerium in intermetallic Ce9Ru4Ga5 is higher than three. ► Short Ce-Ru contacts can be an indication of Ce atoms in intermediate valence state.