On certain properties of bi- and tri-nuclear complexes prepared by the reaction of Ru3(CO)12 with β-substituted oxadienes

Products of ruthenium carbonyl interaction with β-substituted oxadienes were studied by the methods of elementary and X-ray diffraction analyses, IR spectroscopy, 1H and 13C NMR spectroscopy. Formation of bi- and tri-nuclear complexes of the composition Ru2(CO)6(μ-H)(O=C(R1)C(H)=C(R2)) (1) and Ru3(CO)8(O=C(R1)C(H)=C(R2))2 (2) (R1 = CH3, CH3C6H4; R2 = phenyl, ferrocene) was ascertained. Dissolution of the complexes in CHCl3 or CH2Cl2 results in formation of binuclear complexes with chloride bridges. As a result of thermal transformations of complexes 1 and 2 compounds similar to the ones that can be prepared due to longer heating of the initial reaction mixture, are formed with ligand excess