All experiments were conducted under an argon atmosphere, employing standard Schlenk techniques, unless otherwise specified. Reagents were used in their as-received form from the manufacturer, except as otherwise indicated. Bis(acetonitrile) palladium dichloride [PdCl2(MeCN)2], triphenylphosphine (PPh3), 1.0 M trimethylphosphine (PMe3) in THF, and tetrabutylammonium hexafluorophosphate [NBu4][PF6] were purchased from Aldrich. The 1,1′-bis(phosphino)ferrocene ligands, ferrocene (FcH), tri-isopropylphoshine, tribenzylphosphine, tri(o-tol)phosphine, tri(m-tol)phosphine, tri(p-tol)phosphine, tri(p-methoxyphenyl)phosphine, tri(p-fluorophenyl)phosphine, and tris(p-trifluoromethylphenyl)phosphine were purchased from Strem. Diphenylphosphinoferrocene (PPh2Fc) [57 (link)], Na[BArF24] [58 (link)], and the dimers [Pd2(PP)2(μ-Cl)2][BArF24]2 (PP = dppf, dippf, dcpf, or dppdtbpf) [36 (link)] were synthesized following the literature methods. Solvents were obtained from Fisher Scientific. The [NBu4][PF6] was dried at 100 °C under vacuum prior to use. FcH was sublimed prior to use. The purification of methylene chloride (CH2Cl2) and diethyl ether (Et2O) was performed using a Solv-Tek purification system [59 (link)]. The 31P{1H}, 13C{1H}, 19F {1H}, and 1H NMR spectra were recorded in the reported solvents using a Bruker Avance III HD 400 FT-NMR spectrometer. The 1H and 13C{1H} NMR spectra were referenced to residual solvent peaks. The 31P{1H} NMR spectra were referenced using external 85% H3PO4, and the 19F{1H} NMR spectra were referenced to external C6F6. Elemental analysis was carried out by Midwest Microlab.
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