106906-02-9Relevant academic research and scientific papers
Transition-Metal Silyl Complexes, 18. - Hydrido-Silyl and Bissilyl Complexes of Iron with Bridging or Chelating Diphosphinoethane Ligands
Knorr, Michael,Mueller, Johannes,Schubert, Ulrich
, p. 879 - 888 (2007/10/02)
Complexes 2(dppe) (1) (dppe = Ph2PCH2CH2PPh2), 2(dppe) (2), (CO)2(dppe)Fe(H)SiR3 (3), and (CO)2(dppe)Fe(SiR3)2 (6) are synthetized by several routes: by photochemical reaction of dppe-substituted iron carbonyls with HSiR3, by thermal reaction of (CO)4Fe(H)SiR3 or (CO)4Fe(SiR3)2 with dppe, or by exchange of the silyl groups.The dinuclear complexes 1 and 2 can be converted to the mononuclear complexes 3 and 6.The choice of the most suitable method of preparation depends essentially on the nature of the silyl ligand.Bissilyl complexes (2 or 6) are only obtained if SiR3 = SiCl3 or SiMeCl2.In solution the complexes 3 are fluxional.In the crystalline state 3d (SiR3 = SiMe3) shows a distorted octahedral geometry.The silyl group has trans orientation to one of the phosphorus atoms and cis to the hydride ligand, which in turn is trans to one of the carbonyls.
