Synthesis, coordination studies and redox properties of a novel ditertiary phosphine bearing two ferrocenyl groups

A new tris(ferrocenylamine) ditertiary phosphine: Synthesis and co-ordination studies

“…The trimetallophosphine 3 was obtained as a viscous oil following complete removal of the solvent and the 31 P{ 1 H} NMR spectrum (in CDCl 3 ) of this oil exhibited a major phosphorus resonance at d(P) À27.8 ppm (ca. 85% by integration) consistent with previous literature values [18]. Unreacted Ph 2 PCH 2 OH and Ph 2 PH were the only other minor P III species present.…”

“…Unreacted Ph 2 PCH 2 OH and Ph 2 PH were the only other minor P III species present. The 1 H NMR spectrum (in CDCl 3 ) of impure 3 confirmed the characteristic doublet [18] at d(H) 3.02 ppm ( 2 J PH 3.6 Hz) for the CH 2 P methylene protons. Further evidence for the preparation of 3 came from the significantly reduced intensity of the n NH absorption band in the FT-IR spectrum compared to 2.…”

“…Cyclic voltammetric measurements for 1e4 were carried out on a EG&G Model PAR 263A potentiostat/galvanostat using a standard cell, consisting of a Pt disc working electrode (d ¼ 1.6 mm), Ag/AgCl [18,30]. The new trimetallophosphine 3 was prepared by a non-optimised double condensation of the parent secondary amine, 1,1 0 -{FcCH 2 N (H)CH 2 (h 5 -C 5 H 4 )} 2 Fe 2, with two equiv.…”

Metal(II) template assisted syntheses of two P―C―O―P chelating ligands incorporating a bulky 1,3,5,7-tetramethyl-2,4,8-trioxa-6-phosphaadamantyl cage

“…We [3] recently described the synthesis and reactivity of Ad`P(CH 2 ) 2 PPh 2 1, a bulky analogue of dppe by virtue of the 1,3,5,7-tetramethyl-2,4,8-trioxa-6-phosphaadamantyl cage (Ad`). Moreover we demonstrated a range of coordination capabilities of 1 dictated by the sterically encumbered Ad`cage.Mannich condensation reactions have been extensively used to prepare new phosphorus ligands bearing P-C-N(H)R or P-C-N(R)-C-P backbones [4][5][6][7]. This synthetic approach tolerates various amines (primary, secondary and even NH 3 [8]) which undergo condensation with a suitable HOCH 2 PR 2 (preformed or generated in situ from the corresponding secondary phosphine and paraformaldehyde).…”

“…Mannich condensation reactions have been extensively used to prepare new phosphorus ligands bearing P-C-N(H)R or P-C-N(R)-C-P backbones [4][5][6][7]. This synthetic approach tolerates various amines (primary, secondary and even NH 3 [8]) which undergo condensation with a suitable HOCH 2 PR 2 (preformed or generated in situ from the corresponding secondary phosphine and paraformaldehyde).…”