Relative Metal-Hydrogen, -Oxygen, -Nitrogen, and -Carbon bond Strengths for Organoruthenium and Organoplatinum Compounds; Equilibrium Studies of Cp*(PMe3)2RuX and (DPPE)MePtX Systems

Article abstract of DOI:10.1021/ja00239a026

A series of ruthenium, Cp^*(PMe3)2RuX (Cp^*=ν⁵-C5Me5), and platinum, (DPPE)MePtX (DPPE=Ph2PCH2CH2PPh2), compounds have been prepared.The equilibria L_nM-X + H-Y = L_nM-Y + H-X (L_nM=(DPPE)MePt or Cp^*(PMe3)2Ru; X, Y=hydride, alkoxide, hydroxide, amide, alkyl, alkynyl, hydrosulfide, cyanide) have been examined.A lower limit of the Ru-N bond strength has been estimated by analysis of the kinetics of the thermal decomposition of Cp^*(PMe3)2RuNPh2.The equilibrium constants allow for the determination of relative M-X, M-Y bond dissociation energies (BDEs) for each series of compounds.A linear correlation of L_nM-X to H-X BDEs is found for the two dissimilar metal centers.The generality to other systems and predictive value of this correlation are discussed.