“…The , 13C{*H), and 31 ( ) NMR spectra were recorded at 90.00, 200.13, or 250.00; 22. 63 B. Synthesis. The phosphine ligands PEt3, P-/i-Bu3, and PPh3 were used as received (Fluka commercial grade), except PMe3, which was prepared according to the procedure described in the literature42 (Me = CH3; Et = C2H5; Bu = C4H9; Ph = C6H5).…”