Copper(I) Complexes of Pyridine-Bridged Phosphaalkene-Oxazoline Pincer Ligands
| Autor: | Spencer C. Serin, Fraser S. Pick, Derek P. Gates, Gregory R. Dake |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010405 organic chemistry
Stereochemistry Ligand Cationic polymerization chemistry.chemical_element Oxazoline 010402 general chemistry 01 natural sciences Medicinal chemistry Copper 3. Good health 0104 chemical sciences Pincer movement Inorganic Chemistry Bond length chemistry.chemical_compound chemistry Pyridine Phosphaalkene Physical and Theoretical Chemistry |
| Zdroj: | Inorganic chemistry. 55(13) |
| ISSN: | 1520-510X |
| Popis: | 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), κ(2)(NN) dimeric complex with copper(I) (7) that dissociates into a cationic κ(3)(PNN) monomeric complex upon addition of a neutral ligand {[1a·CuL]OTf (8a-e): L = PPh3 (a), P(OPh)3 (b), 2,6-lutidine (c), 4-DMAP (d), 1-methylimidazole (e)}. The P-Cu bond lengths in 8 are influenced by the π-accepting/σ-donating properties of L, and this can be observed by changes in the δ(31)PP═C NMR shift. The donor-acceptor properties in complexes of type 8 have also been investigated by UV/vis spectroscopy and density functional theory calculations. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|