| 亚胺膦亚胺型稀土双烷基配合物对丁二烯1,2-选择性聚合 |
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| 引用本文： | 刘博,李世辉,李丹凤,吕奎,崔冬梅,孙广平. 亚胺膦亚胺型稀土双烷基配合物对丁二烯1,2-选择性聚合[J]. 应用化学, 2012, 29(12): 1394-1398. DOI: 10.3724/SP.J.1095.2012.20431 |
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| 作者姓名： | 刘博 李世辉 李丹凤 吕奎 崔冬梅 孙广平 |
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| 作者单位： | (1.吉林大学材料科学与工程学院，教育部汽车材料重点实验室 长春 130025;2.中国科学院长春应用化学研究所高分子物理和化学重点实验室 长春 130022) |
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| 摘 要： | 以三烷基钪Sc(CH2SiMe3)3(THF)2和胺基膦亚胺配体为原料，经烷基消去反应合成了胺基膦亚胺(NPN)型配体螯合钪烷基配合物。 其结构用1H NMR、13C NMR、元素分析和X射线衍射分析进行了表征。 在助催化剂有机硼盐和烷基铝的作用下，该配合物对丁二烯聚合表现出了较高的催化活性。 并且随着聚合温度的降低，催化剂的1,2-选择性也随之升高。 聚合温度为-75 ℃时，产物的1,2-结构含量高达98.0%，聚合物的分子量为2.95×104，分子量分布为1.65。
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| 关 键 词： | 丁二烯 选择性 催化活性 |
| 收稿时间： | 2012-09-27 |
| 修稿时间： | 2012-10-16 |
Highly 1,2-Selective Polymerization of 1,3-Butadiene with Rare-earth Metal Bis(alkyl)s Bearing an Iminophosphonamide Ligand |
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| LIU Bo , LI Shihui , LI Danfeng , LV Kui , CUI Dongmei , SUN Guangping. Highly 1,2-Selective Polymerization of 1,3-Butadiene with Rare-earth Metal Bis(alkyl)s Bearing an Iminophosphonamide Ligand[J]. Chinese Journal of Applied Chemistry, 2012, 29(12): 1394-1398. DOI: 10.3724/SP.J.1095.2012.20431 |
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| Authors: | LIU Bo LI Shihui LI Danfeng LV Kui CUI Dongmei SUN Guangping |
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| Affiliation: | (1.Key Laboratory of Automobile Materials of Ministry of Education,Department of ;Materials Science and Engineering,Jilin University,Changchun 130025,China;2.State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of ;Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China) |
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| Abstract: | Treatment of scandium tris(alkyl)s, Sc(CH2SiMe3)3(THF)2, with 2-Me-C6H4NHPPh2=NC6H2-2,4,6-Me3(NPNArH) via deprotonation affords the bis(alkyl) derivative[NPNAr]Sc(CH2SiMe3)2(THF). The complex structure was characterized by means of 1H NMR, 13C NMR, elemental analysis and X-ray diffraction analysis. Complex activated with [Ph3C][B(C6F5)4] and AliBu3 exhibited highly catalytic activity to the polymerization of butadiene. The 1,2-selectivity of polybutadiene noticeably increased with decrease of temperature. The molecular mass is 2.95 ×104 and the molecular mass distribution(Mw/Mn) is 1.65 at -75 ℃. |
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| Keywords: | butadiene selectivity catalytic activity |
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