Rich C-H bond activations of yttrium alkyl complexes bearing phosphinimino-amine ligands

被引:14
|
作者
Li, Danfeng [1 ,2 ]
Li, Shihui [1 ,2 ]
Cui, Dongmei [1 ]
Zhang, Xuequan [1 ]
机构
[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
基金
中国国家自然科学基金;
关键词
C-H bond activation; Yttrium alkyl complex; Phosphinimino-amine; Polymerization; BETA-DIKETIMINATO LIGANDS; RARE-EARTH-METALS; STRUCTURAL-CHARACTERIZATION; CATALYTIC-ACTIVITY; LANTHANIDE COMPLEXES; CYCLOOCTATETRAENE COMPLEXES; DIALKYLSCANDIUM COMPLEXES; POLYMERIZATION CATALYSTS; ORGANOYTTRIUM COMPLEXES; HYDRIDE COMPLEXES;
D O I
10.1016/j.jorganchem.2010.09.005
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Aseries of phosphinimino-amine compounds (2,6-iPr(2)-C6H3NH)C(Me)CHPPh2(NAr)(Ar = 2,6-iPr(2)-C6H3 (HL1),2,6-Et-2-C6H3 (HL2),2,6-Me-2-C6H3 (HL3), C6H5 (HL4), 3-CF3-C6H4 (HL5)) that existed in imine and amine forms were synthesized and fully characterized. Treatment of HL1-5 with Y(CH2SiMe3)(3)(THF)(2) afforded the corresponding yttrium mono- or bis(alkyl) complexes that depended significantly on the ancillary ligands. The reactions between HL1-3 and Y(CH2SiMe3)(3)(THF)(2) at room temperature generated mononuclear monoalkyl complexes 1-3 via deprotonation and C-H bond activation. However, when compounds HL4,5 were used, the dialkyl complexes 4 and 5 were isolated by deprotonation only. The molecular structures of complexes 1-4 were characterized with X-ray crystallography and discussed. (c) 2010 Elsevier B.V. All rights reserved.
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页码:2781 / 2788
页数:8
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