COMPLEXES OF TRIVALENT PHOSPHORUS DERIVATIVES .V. PHOTOCHEMICAL REACTIONS OF SILICON AND TIN DERIVATIVES OF CYCLOPENTADIENYLIRON DICARBONYL WITH TRIVALENT PHOSPHORUS LIGANDS

Ultraviolet irradiation of (CH3)3EFe(CO)2C5H5 (E = Si or Sn) with the monodentate trivalent phosphorus ligands PR3 (R = C6H5 or OC6H5) gives the orange monocarbonyl derivatives (CH3)3EFe(CO)(PR3)(C6H5) (E = Si or Sn; R = C6H5 or OC6H5). Similar ultraviolet irradiation of (CH3)3EFe(CO)2C6H5 (E = Si or Sn) with the chelating ditertiary phosphines (C6H5)2PCH2CH2P(C6H5)2 and cis-(C6H5)2PCH=CHP(C6H5)2 gives the orange carbonyl-free derivatives (CHs)aEFe(diphos)-(C5H5) (E = Si or Sn). The infrared and proton nmr spectra of the new compounds are discussed. © 1968, American Chemical Society. All rights reserved.