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Orthometallation reaction at a binuclear pyrazolyl(pz) bridged rhodium compound: synthesis and crystal structure determination of Rh 2 (µ-pz) 2 [µ-P(C 6 F 4 )Ph 2 ]Br(CO)(pcBr), pcBr = P(o-BrC 6 F 4 )Ph 2

1985; Royal Society of Chemistry; Issue: 1 Linguagem: Inglês

10.1039/c39850000043

2050-5639

Francisco Barceló, Pascual Lahuerta, M.A. Úbeda, Concepción Foces‐Foces, F. H. Cano, M. Martínez‐Ripoll,

Catalytic C–H Functionalization Methods

The complex [Rh(µ-pz)(CO)(pcBr)]2[pz = pyrazoly, pcBr = P(o-BrC6F4)Ph2] undergoes orthometallation in refluxing toluene to give a new binuclear compound containing a rhodium–rhodium bond, Rh2 Rh2(µ-pz)2(µ-pc)Br(CO)(pcBr)[pc = P(C6F4)Ph2], which has been structurally characterized by X-ray crystallography; the complex has two pyrazolyl groups and one orthometallated phosphine bridging the two in equivalent rhodium atoms, and one phosphine ligand chelating one of the rhodium atoms via P and the bromine atom from the o-bromotetrafluorophenyl group.