REACTIONS OF RUTHENIUM TRIPHENYLPHOSPHINE COMPLEXES WITH DIAZADIENES II. REACTIONS OF RuH2(PPh3)4 AND RuH4(PPh3)3

Article abstract of DOI:10.1016/S0022-328X(00)82478-X

The reactions between RuH2(PPh3)4 or RuH4(PPh3)3 and 1,2-di(isopropylimino)ethane (DAD-A), 2,3-di(phenylimino)butane DAD-C) and 1,2-di(p-methoxyphenylimino)ethane (DAD-D) in toluene produce symmetrical trans dihydrido complexes.However the product obtained from DAD-C is difficult to isolate, and attempts to prepare it in alkanes led to the isolation of hexa-coordinate cis-dihydrido and pentacoordinate cis-dihydrido complexes in which the diazadiene is coordinated only through one end.A scheme showing the proposed reaction sequence is presented.