کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1305045 | 974865 | 2006 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Bimetallic nickel complexes of trimethyl phenyl linked salicylaldimine ligands: Synthesis, structure and their ethylene polymerization behaviors Bimetallic nickel complexes of trimethyl phenyl linked salicylaldimine ligands: Synthesis, structure and their ethylene polymerization behaviors](/preview/png/1305045.png)
Bimetallic salicylaldimine-nickel complexes, 2,4,6-Me3-1,3-{[NCH–(3′-R-5′-Y-2′-O–C6H3)-κ2-N,O]Ni(Ph) (PPh3)}2 [R = tert-Bu, Y = Me, 1b; R = Ph, Y = H, 2b] were prepared and their catalytic behaviors of ethylene polymerization were investigated. The bimetallic complex 2b shows higher activities (2.9 × 105 g PE mol−1 Ni h−1) for ethylene polymerization and affords polymer with high molecular weight (Mw = 1.41 × 105) and broad molecular weight distribution (Mw/Mn = 6.1) than its mononuclear matrix, {[(2,6-Me2C6H3)–NCH–(3′-Ph-2′-O–C6H3)-κ2-N,O]Ni(Ph)(PPh3)} (3) (Activity = 5.5 × 104 g PE mol−1 Ni h−1; Mw = 1.86 × 104; Mw/Mn = 2.8).
Bimetallic salicylaldimine-nickel complex 2b can be used as high active catalyst for ethylene polymerization to afford polymer with high molecular weight and broad molecular weight distribution.Figure optionsDownload as PowerPoint slide
Journal: Inorganic Chemistry Communications - Volume 9, Issue 12, December 2006, Pages 1322–1325