Abstract trans-[(η 5-C 5 H 5) Fe (η 5-C 5 H 4-η 1-C≡ C) Ru (C≡ C-4-C 6 H 4 NPh 2)(dppe) 2][4; dppe= 1, 2-bis (diphenylphosphanyl) ethane] and trans, trans, trans-[{(η 5-C 5 H 5) Fe (η 5-C 5 H 4-η 1-C≡ C) Ru (dppe) 2 (C≡ C-4-C 6 H 4)} 3 N](7) have been synthesized from trans-[Ru (C≡ C-4-C 6 H 4 NPh 2) Cl (dppe) 2](3) and trans, trans, trans-[{(dppe) 2 ClRu (C≡ C-4-C 6 H 4)} 3 N](6), respectively, and the identities of trans-[Ru (C= CH-4-C 6 H 4 ...