Inorganic Chemistry, Vol.40, No.19, 4913-4917, 2001
Strong 1,4-P-O intramolecular interactions as a source of conformational preferences in alpha-stabilized phosphorus ylides
For the first time, the existence of a strong intramolecular 1,4-interaction between the phosphorus atom and the oxygen atom in alpha -keto-stabilized ylides has been demonstrated by means of theoretical calculations. This interaction has a notable influence on the conformational preferences and rotational barriers of alpha -stabilized phosphorus ylides and bis-ylides.