Fluorosubstituted rhodacarboranes 3,3-(R3P)2-3-H-3,1,2-RhC2B9H 11-nFn (n= 1, 2, 4): Synthesis, molecular structure, and catalytic properties in hydrosilylation of styrene and phenylacetylene

Article abstract of DOI:10.1007/BF02495414

Hydridorhodacarboranes 3,3-(Ph₂RP)₂-3-H-3,1,2-RhC₂B,H _11-nF_n (R = Ph, Me; n = 1, 2, 4) containing F atoms at the B atoms of the π-carborane ligand were synthesized from (Ph₂P)₃RhCl or (Ph₂MeP)₃RhCl and nido-7,8-C₂B₉H_12-nF_n^- (n = 1, 2, 4) salts. Hydridorhodacarboranes 3,3-(Ph₂MeP)₂-3-H-3,1,2-RhC₂B₉H _11-nF_n readily exchange the H atom at the Rh atom for the Cl atom under the action of CH₂Cl₂ to give 3,3-(Ph₂MeP)₂-3-Cl-3,1,2-RhC₂B ₉H_11-nF_n. The structures of the 3,3-(Ph₃P)₂-3-H-3,1,2-RhC₂B₉H ₇F₄ and 3,3-(Ph₂MeP)₂-3-Cl-3,1,2-RhC₂B ₉H₉F₉ complexes were determined by X-ray diffraction analysis. Catalytic properties of the rhodacarboranes obtained in hydrosilylation of styrene and phenylacetylene by PhMe₂SiH were studied.