Abstract
Novel bimetallic Ru-Pt and Fe-Pt complexes, [M(C 5 R 5 )(L) 2 (η 1 -P 4 )]Y (M = Ru, Fe; R = H, Me; L = PPh 3 , 1/2Dppf (Ph 2 P(C 5 H 4 )Fe(C 5 H 4 )PPh 2 ), 1/2Dppe (Ph 2 PCH 2 CH 2 PPh 2 ); Y = PF 6 , CF 3 SO 3 , BPh 4 ) were synthesized for the first time by the reaction of η 1 -tetraphosphorus complexes of ruthenium(II) and iron(II), [M(C 5 R 5 )(L) 2 (η 1 -P 4 )]Y with platinum(0) complex [Pt(η 2 -C 2 H 4 )(PPh 3 ) 2 ] in acetone. The structures and compositions of the title complexes were studied by the 31 P NMR, correlated 31 P- 31 P NMR COSY, NOESY, 1 H-spectroscopy, and elemental analysis. The carbene-like fragment Pt(PPh 3 ) 2 generated in situ was found to be inserted at the P-P bond of the η 1 -coordinated tetraphosphorus and migrate between the phosphorus atoms of the obtained ligand μ, η 1 : η 2 -P 4 . The exchange process in the novel complexes was investigated.