Copper(I) Complexes of Pyridine-Bridged Phosphaalkene-Oxazoline Pincer Ligands
作者： Spencer C. Serin , Fraser S. Pick , Gregory R. Dake , Derek P. Gates
DOI: 10.1021/ACS.INORGCHEM.6B00917
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摘要: The synthesis of enantiomerically pure pyridine-bridged phosphaalkene-oxazolines ArP═C(Ph)(2,6-C5H3NOx) (1, Ar = Mes/Mes*, Ox CNOCH(i-Pr)CH2/CNOCH(CH2Ph)CH2) is reported. This new ligand forms a κ(P), κ2(NN) dimeric complex with copper(I) (7) that dissociates into cationic κ3(PNN) monomeric upon addition neutral {[1a·CuL]OTf (8a–e): L PPh3 (a), P(OPh)3 (b), 2,6-lutidine (c), 4-DMAP (d), 1-methylimidazole (e)}. P–Cu bond lengths in 8 are influenced by the π-accepting/σ-donating properties L, and this can be observed changes δ31PP═C NMR shift. donor–acceptor complexes type have also been investigated UV/vis spectroscopy density functional theory calculations.
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