Oxygen-silicon bonds dissociation energies

TABLE 19. Derived silicon-oxygen and silicon-nitrogen bond dissociation energies (kJmol-1)a... 

This review article contains "best" values of bond-dissociation energies at 298.15 K of hydrocarbons and their nitrogen, oxygen, sulfur, halogen, and silicon derivatives. There is also some limited data on inorganic molecules. 

As can be easily appreciated from the table of bond dissociation energies, reactions involving formation of silicon-oxygen bonds from silyl iodides, bromides, and chlorides are exothermic. Of equal significance, reactions that result in formation of the silicon-fluorine bond (the strongest single bond known) enable cleavage of virtually all other bonds to silicon. 

The carbon-sulphur bond resists hydrolysis and oxidation mercaptanes are an important component of petroleum. Although it is homeolytically stable (dissociation energy 330 kJ/mol [4], the silicon-sulphur bond is sensitive to oxygen. It is easily converted to a Si—O bond by water or oxygen compounds with Ge, Sn or Pb. Analogously, the C—P bond is stable, but the Si—P bond is sensitive to oxygen. 

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