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Neutral palladium(II) complexes with P,N Schiff-base ligands: Synthesis, characterization and catalytic oligomerisation of ethylene |
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| Authors: | Mokgolela M. Mogorosi John R. Moss Selwyn F. Mapolie Koop Lammertsma |
| Affiliation: | a Department of Chemistry, University of Cape Town, Private Bag, Rondebosch 7701, South Africa b Department of Chemistry and Pharmaceutical Sciences, Faculty of Sciences, VU University Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands c Department of Chemistry and Polymer Science, University of Stellenbosch, Private Bag, Matieland, South Africa |
| Abstract: | New N-functionalised 2-phosphinobenzaldimino (P^N) ligands bearing 3-picolyl, furfuryl, thiophene-2-methyl, thiophene-2-ethyl, and benzyl groups have been prepared in good yield. The 2-phosphinobenzaldimino ligands were reacted with PdCl2(COD) to give the corresponding metal complexes of the type Pd(L)Cl2 (L = 2-phosphinobenzaldimino (P^N) ligand). All compounds were fully characterized using spectroscopic and analytical techniques, including 1H, 13C, and 31P NMR and IR spectroscopies, mass spectrometry and elemental analysis. Selected neutral palladium complexes were evaluated as catalyst precursors in ethylene oligomerisation reactions, after activation with a co-catalyst (MMAO, EtAlCl2, or Et2AlCl). |
| Keywords: | Iminophosphine Schiff base Palladium Ethylene oligomerisation |
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