Formation and Crystal Structures of Lewis Acid Adducts of Ph3PCHP(O)Ph2; New Neutral and Cationic Species

Wolfgang Petz (1) , Bernhard Neumüller , Kathrin Aicher , Florian Öxler

1 Philipps Universität Marburg = Philipps University of Marburg

The carbodiphosphorane C(PPh3)2 (1) is easily hydrolyzed from wet air to give the ylide Ph3PCHP(O)Ph2 (2), which forms addition compounds with various Lewis acids to give neutral or cationic compounds. According to pairs of electrons at the central carbon atom and the oxygen atom, respectively, addition compounds with coordination modes A (via oxygen), B (via carbon), and C (via carbon and oxygen) were isolated either as by-products from reactions of Lewis acids with 1 (contaminated with some 2) or directly with 2. The crystal structures and the spectroscopic properties of 2 and of the addition compounds [Ph3PCHP(OBF3)Ph2] (5), [Ph3PCH2P(OBF3)Ph2][(-OH)B2F6] (6), [Ph3PCH2P(OBI3)Ph2][BI4] (7), [Ph3PCHP(OSnCl2)Ph2] (8), and [Ph3PCH2P(O)Ph2]2[Hg2I6] (9) are reported.

Mots clés: Physical Sciences

Wolfgang Petz, Bernhard Neumüller, Kathrin Aicher, Florian Öxler. Formation and Crystal Structures of Lewis Acid Adducts of Ph3PCHP(O)Ph2; New Neutral and Cationic Species. Journal of Inorganic and General Chemistry / Zeitschrift für anorganische und allgemeine Chemie, 2010, 636 (9-10), pp.1751. ⟨10.1002/zaac.201000092⟩. ⟨hal-00599860⟩