Allenylidene complexes [Ru(η 5 -C 9 H 7 )(C CCPh 2 ){P(OR) 3 }(PPh 3 )][PF 6 ] (R = Et (1), Me (2)) have been synthesized by the reaction of the complexes [Ru(η 5 -C 9 H 7 )Cl{P(OR) 3 }(PPh 3 )] with 1,1-diphenyl-2-propyn-1-ol in the presence of NaPF 6 . Addition of different nucleophiles to complex 1 allows the synthesis of new allenyl or alkynyl ruthenium complexes depending on the regiochemistry of the reaction. Unexpected complexes [Ru(η 5 -C 9 H 7 ){κ 3 (C,C,C)-C-(R 2 PCH 2 CHCH 2 )CCPh 2 }{P(OEt) 3 }][PF 6 ] (R = i Pr (9a), Ph (9b)), containing an unusual κ 3 (C,C,C)-ligand have been obtained from the reaction of the allenylidene complex 1 with alkenylphosphane Ph 2 PCH 2 CHCH 2 (ADPP) or i Pr 2 PCH 2 CHCH 2 (ADIP). The formation of these complexes is proposed to proceed through an intermediate, [Ru(η 5 -C 9 H 7 )(CCCPh 2 ){P(OR) 3 }{κ 1 (P)-R 2 PCH 2 CHCH 2 }][PF 6 ].