Abstract

The p K a values have been measured of some organosilicon-, -germanium-, or -tin-substituted pyridines. For the compounds studied the Me 3M group (M=Si, Ge, or Sn) in the 2-, 3-, or 4-position of pyridine is electron donating which is contrary to the observed effects of these groups when p-substituted in benzoic acids. The 2-substituted pyridines show exalted p K a values due to the formation of a complex with the solvent.

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