Synthesis and characterisation of κ2-N,O-oxazoline-enolate complexes of nickel(ii ): explorations in coordination chemistry and metal-mediated polymerisation
| Autor: | Jeanette A. Adjei, Alan J. Lough, Robert A. Gossage |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Olefin fiber Ligand General Chemical Engineering chemistry.chemical_element 02 engineering and technology General Chemistry Oxazoline 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Catalysis Coordination complex Metal chemistry.chemical_compound Nickel chemistry Reagent visual_art Polymer chemistry visual_art.visual_art_medium 0210 nano-technology |
| Zdroj: | RSC Advances. 9:3956-3964 |
| ISSN: | 2046-2069 |
| Popis: | The synthesis and characterisation (UV-Vis, IR, X-ray diffraction, etc.) of a series of Ni(II) complexes derived from both known and novel 2-acylmethyl-2-oxazolines (2a–g: i.e., (Z)-1-R-2-(4,4′-dimethyl-2′-oxazolin-2′-yl)eth-1-en-1-ol; R = –Ph, –2-furanyl, –p-NO2-Ph, –t-Bu, –2-thiofuranyl, p-NC-Ph, –CF3) is reported. These Ni materials (3a–g) represent the first group 10 metal complexes of this ligand class. All derivatives reported are paramagnetic (S = 1) compounds of formulae Ni(κ2-N,O-L)2 where L represents an enolate of structure (Z)-1-R-2-(4′,4′-dimethyl-2′-oxazolin-2′-yl)eth-1-en-1-ate formed via proton loss from 2. The air- and moisture-stable metal complexes feature a less typical distorted seesaw-shaped disposition of binding atoms around the metal centre for six structurally characterised (X-ray) examples. Preliminary investigations indicate that 3a (R = –Ph) is a useful catalysts for olefin polymerisation in the presence of alkylaluminum reagents. |
| Databáze: | OpenAIRE |
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