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• W2510248730 endingPage "2790" @default.
• W2510248730 startingPage "2783" @default.
• W2510248730 abstract "The treatment of 2-(ArN═CH)C6H4-HNC9H6N ([NQNANIMe]H, Ar = 2,6-Me2C6H3; [NQNANIEt]H, Ar = 2,6-Et2C6H3; [NQNANIiPr]H, Ar = 2,6-iPr2C6H3) with nBuLi and CrCl3(THF)3 achieves the hetero-dinuclear complexes [NQNANIR]CrCl(μ-Cl)2Li(THF)2 (1a, R = Me; 1b, R = Et; 1c, R = iPr) or bisligated complex κ5-[NQNANIiPr]2CrCl (2c) depending on the reactant ratios used. Reactions of these ligands with nBuLi and CrCl2(THF)2 could achieve the square-pyramidal complexes [NQNANIR]CrCl(THF) (3b, R = Et; 3c, R = iPr). Complex 3c can be oxidized by alkyl chloride to dimeric complex {[NQNANIiPr]CrCl}2(μ-Cl)2 (4) through a single-electron-transfer mechanism. Similar reaction of 2-(C9H6N)N═CHC6H4-HNAr ([NQNINAMe]H, Ar = 2,6-Me2C6H3; [NQNINAEt]H, Ar = 2,6-Et2C6H3; [NQNINAiPr]H, Ar = 2,6-iPr2C6H3) with nBuLi and CrCl3(THF)3 furnishes [NQNINAR]CrCl(μ-Cl)2Li(THF)2 (5a, R = Me; 5b, R = Et; 5c, R = iPr) in high yields. However, a chromium complex with a butyl-substituted ligand, [NQBuNINAiPr]CrCl2 (6), is obtained when 2 equiv of nBuLi is used. The molecular structures of 1c, 2c, 3c, 4, 5c, and 6 are confirmed by X-ray crystallography. Upon activation with MAO, the Cr(III) complexes (1a–1c, 4, and 5a–5c) show moderate catalytic activities (50 to 218 kg of PE·mol(Cr)−1·h–1) in ethylene polymerization, whereas the Cr(II) complexes 2c, 3b, and 3c are inert under the same conditions." @default.
• W2510248730 created "2016-09-16" @default.
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• W2510248730 date "2015-05-20" @default.
• W2510248730 modified "2023-10-17" @default.
• W2510248730 title "Chromium Complexes with <i>N</i>,<i>N</i>,<i>N</i>-Tridentate Quinolinyl Anilido-Imine Ligand: Synthesis, Characterization, and Catalysis in Ethylene Polymerization" @default.
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• W2510248730 doi "https://doi.org/10.1021/acs.organomet.5b00247" @default.
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