Rare-earth dichloro and bis(alkyl) complexes supported by bulky amido-imino ligand. Synthesis, structure, reactivity and catalytic activity in isoprene polymerization
文献类型：期刊论文
| 作者 | Kissel, Alexander A.1; Lyubov, Dmitry M.1; Mahrova, Tatyana V.1; Fukin, Georgy K.1; Cherkasov, Anton V.1; Glukhova, Tatyana A.1; Cui, Dongmei2; Trifonov, Alexander A.1 |
| 刊名 | DALTON TRANSACTIONS
 |
| 出版日期 | 2013 |
| 卷号 | 42期号:25页码:9211-9225 |
| ISSN号 | 1477-9226 |
| DOI | 10.1039/c3dt33108c |
| 英文摘要 | A monoanionic amido-imino ligand system [(2,6-iPr(2)C(6)H(3))N=C(Me)C(vCH(2))N(C6H3-2,6-iPr(2))](-) was successfully employed for the synthesis of monomeric dichloro [(2,6-iPr(2)C(6)H(3))N=C(Me)C(vCH(2))N(C6H3-2,6-iPr(2))] LnCl(2)(THF)(2) (Ln = Y, 2Y; Lu, 2Lu) and bis(alkyl) [(2,6-iPr(2)C(6)H(3))N=C(Me)C(vCH(2))N(C6H3-2,6-iPr(2))]Ln-(CH2SiMe3)(2)(THF) (Ln = Y, 4Y; Lu, 4Lu) species of yttrium and lutetium. Dichloro complexes 2Y and 2Lu turned out to be unstable in aromatic solvents. The ligand symmetrization reaction in the case of 2Y affords the yttrium complex coordinated by dianionic [(2,6-iPr(2)C(6)H(3))N=C(Me)C(vCH(2))N(C6H3-2,6-iPr(2))]2ligand, (2,6-iPr(2)C(6)H(3))N=C(Me)C(vCH(2))N(C6H3-2,6-iPr(2)) and YCl3. On the contrary, bis(alkyl) species 4Y and 4Lu are rather stable and do not undergo such a transformation or thermal decomposition. The treatment of complex 4Y with DME resulted in C-O bond cleavage and the formation of a dimeric methoxy-alkyl species {[(2,6-iPr(2)C(6)H(3))N=C(Me)C(vCH(2))N(C6H3-2,6-iPr(2))]Y(CH2SiMe3)(mu-OMe)}(2) (5). The ternary systems 4Ln/AliBu(3)/borate (borate = [HNMe2Ph][B(C6F5)(4)] and [CPh3][B(C6F5)(4)]; molar ratio 1 : 10 : 1) performed high catalytic activity in isoprene polymerization and ability to convert into polymer 1000-5000 equivalents of isoprene in 20-120 min with quantitative conversion. The obtained polyisoprenes possessed high molecular weights (2.9 x 10(4)-4.1 x 10(4)) and moderate polydispersities (2.14-3.52). Predominant 3,4-regioselectivity (up to 78%) was observed. |
| 语种 | 英语 |
| WOS记录号 | WOS:000319875600027 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/46581]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Trifonov, Alexander A. |
| 作者单位 | 1.Russian Acad Sci, GA Razuvaev Inst Organometall Chem, Moscow 117901, Russia 2.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Kissel, Alexander A.,Lyubov, Dmitry M.,Mahrova, Tatyana V.,et al. Rare-earth dichloro and bis(alkyl) complexes supported by bulky amido-imino ligand. Synthesis, structure, reactivity and catalytic activity in isoprene polymerization[J]. DALTON TRANSACTIONS,2013,42(25):9211-9225. |
| APA | Kissel, Alexander A..,Lyubov, Dmitry M..,Mahrova, Tatyana V..,Fukin, Georgy K..,Cherkasov, Anton V..,...&Trifonov, Alexander A..(2013).Rare-earth dichloro and bis(alkyl) complexes supported by bulky amido-imino ligand. Synthesis, structure, reactivity and catalytic activity in isoprene polymerization.DALTON TRANSACTIONS,42(25),9211-9225. |
| MLA | Kissel, Alexander A.,et al."Rare-earth dichloro and bis(alkyl) complexes supported by bulky amido-imino ligand. Synthesis, structure, reactivity and catalytic activity in isoprene polymerization".DALTON TRANSACTIONS 42.25(2013):9211-9225. |
入库方式： OAI收割
来源：化学研究所
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