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      Synthesis and characterisation of κ 2- N, O-oxazoline-enolate complexes of nickel(ii): explorations in coordination chemistry and metal-mediated polymerisation†‡

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      RSC Advances
      The Royal Society of Chemistry

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          Abstract

          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-NO 2-Ph, – t-Bu, –2-thiofuranyl, p-NC-Ph, –CF 3) 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(κ 2- 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.

          Abstract

          Novel Ni( ii) enolate complexes derived from ( Z)-1-R-2-(4′,4′-dimethyl-2′-oxazolin-2′-yl)eth-1-en-1-ols are synthesised and structurally examined. The complexes display good potency as olefin polymerisation catalysts.

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          Most cited references4

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          Principles of Polymerization

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            Applied Organometallic Chemistry & Catalysis

            R Whyman (2001)
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              Coordination Chemistry of Metal Enolates

              J. Vicente (2009)
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                Author and article information

                Journal
                RSC Adv
                RSC Adv
                RA
                RSCACL
                RSC Advances
                The Royal Society of Chemistry
                2046-2069
                29 January 2019
                25 January 2019
                29 January 2019
                : 9
                : 7
                : 3956-3964
                Affiliations
                [a] Department of Chemistry & Biology, Ryerson University 350 Victoria Street Toronto ON M5B 2K3 Canada gossage@ 123456ryerson.ca
                [b] Department of Chemistry, University of Toronto 80 St. George Street Toronto ON M5S 3H6 Canada alough@ 123456chem.utoronto.ca
                Author notes
                [§]

                Contact for queries on crystallography.

                Author information
                https://orcid.org/0000-0001-6549-6025
                Article
                c8ra10304f
                10.1039/c8ra10304f
                9060527
                35518104
                40e3413b-19df-4b64-a8c3-03fbcfee24b9
                This journal is © The Royal Society of Chemistry
                History
                : 15 December 2018
                : 10 January 2019
                Page count
                Pages: 9
                Funding
                Funded by: Ryerson University, doi 10.13039/100007891;
                Award ID: Unassigned
                Funded by: Natural Sciences and Engineering Research Council of Canada, doi 10.13039/501100000038;
                Award ID: Unassigned
                Categories
                Chemistry
                Custom metadata
                Paginated Article

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