Whereas the reaction of [Rh(CO)2(μ-pz)]2 (where pz is either a pyrazolato or 3,5-dimethylpyrazolato group) with 3-(diphenylphosphino)benzoic acid and (2-formylphenyl) diphenylphosphine gives the dinuclearic complexes [Rh(CO)(Ph2P-3-C6H4COOH)(μ- pz)]2 (1 and 2) and [Rh(CO)(Ph2P-2-C6H4CHO)(μ-pz)]2 (5 and 6) respectively, 2-(diphenylphosphino)benzoic acid gives the monorhodium compounds R) (3 and 4).
而[Rh(CO)2(μ-pz)] 2(其中pz为吡唑并或3,5-二甲基吡唑并基)与3-(二苯基膦基)苯甲酸和(2-甲酰基苯基)二苯膦的反应则为双核配合物[Rh(CO)(Ph 2 P-3-C 6 H 4 COOH)(μ-pz)] 2(1和2)和[Rh(CO)(Ph 2 P-2-C 6 H 4 CHO) (μ-pz)] 2(5和6),2-(二苯基膦基)苯甲酸生成单铑化合物R )(3和4)。Rh(CO)(H)(Ph 2 P-2-C 6 H 4 COO)(3)和[Rh(CO)(Ph 2 P-2-C 6 H 4 CHO)(μ- )]的结构通过X射线衍射分析确定了图2(6)。单铑和二铑络合物均在120℃和28atm的CO和H 2压力下催化无环和环状烯烃的加氢甲酰化。在70–90°C下,具有3-(二苯基膦基)苯甲酸部分的双核配合物比单铑化合物具有更高的活性。
Orthometallation reaction at a binuclear pyrazolyl(pz) bridged rhodium compound: synthesis and crystal structure determination of Rh<sub>2</sub>(µ-pz)<sub>2</sub>[µ-P(C<sub>6</sub>F<sub>4</sub>)Ph<sub>2</sub>]Br(CO)(pcBr), pcBr = P(o-BrC<sub>6</sub>F<sub>4</sub>)Ph<sub>2</sub>
作者:Francisco Barceló、Pascual Lahuerta、M. Angeles Ubeda、Concepcion Foces-Foces、Felix H. Cano、Martin Martinez-Ripoll
DOI:10.1039/c39850000043
日期:——
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.
Elguero, Jose; Esteban, Montserrat; Grenier-Loustalot, Marie Florence, Journal de Chimie Physique et de Physico-Chimie Biologique, 1984, vol. 81, # 4, p. 251 - 254
作者:Elguero, Jose、Esteban, Montserrat、Grenier-Loustalot, Marie Florence、Oro, Luis A.、Pinillos, M. Teresa
DOI:——
日期:——
Barceló, Francisco; Lahuerta, Pascual; Ubeda, M. Angeles, Organometallics, 1988, vol. 7, # 3, p. 584 - 590
作者:Barceló, Francisco、Lahuerta, Pascual、Ubeda, M. Angeles、Foces-Foces, Concepción、Cano, Félix H.、Martínez-Ripoll, Martín
DOI:——
日期:——
Synthesis and hydroformylation reaction of dinuclear rhodium(<scp>I</scp>) complexes with mixed bridging ligands. X-Ray structure of [Rh<sub>2</sub>(µ-pz)(µ-SBu<sup>t</sup>)(CO)<sub>2</sub>{P(OMe)<sub>3</sub>}<sub>2</sub>]
作者:Carmen Claver、Philippe Kalck、Mohammed Ridmy、Alain Thorez、Luis A. Oro、M. Teresa Pinillos、M. Carmen Apreda、Felix H. Cano、Concha Foces-Foces