کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1321373 | 1499891 | 2014 | 6 صفحه PDF | دانلود رایگان |
• Synthesis and characterization of four N,N,N-tridentate nickel complexes.
• N,N,N-Tridentate nickel complexes catalyzed addition polymerization of norbornene.
• Different ligands show different effects on catalysis.
The N,N,N-tridentate quinolinyl anilido–imine ligands 2-(ArNC(H))C6H4–HNC9H6N (LaH, Ar = 2,6-Me2C6H3; LbH, Ar = 2,6-iPr2C6H3) and 2-(C9H6N)NC(H)C6H4–HNAr (LcH, Ar = 2,6-Me2C6H3; LdH, Ar = 2,6-iPr2C6H3) were synthesized and characterized. Reactions of these ligands with nBuLi and subsequent additions of NiCl2(DME) afford the N,N,N-tridentate nickel complexes [2-(ArNC(H))C6H4–NC9H6N]NiCl (Ar = 2,6-Me2C6H3 (1a), 2,6-iPr2C6H3 (1b)) and [2-(C9H6N)NC(H)C6H4–NAr]NiCl (Ar = 2,6-Me2C6H3 (2a), 2,6-iPr2C6H3 (2b)). All the complexes were fully characterized by NMR and elemental analyses. X-ray diffraction analyses of 1b and 2b revealed an almost square-planar geometry around the metal center. When activated with MAO, these nickel complexes can be used as catalysts for the vinyl addition polymerization of norbornene affording high molecular weight polymer.
Several Nickel complexes supported by quinolinyl decorated anilido–imine ligands were synthesized and used as catalysts for norbornene addition polymerization.Figure optionsDownload as PowerPoint slide
Journal: Journal of Organometallic Chemistry - Volume 749, 1 January 2014, Pages 350–355