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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Redox-controlled syndio-specific polymerization of styrene catalyzed by ferrocenyl functionalized half-sandwich scandium complexes
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Redox-controlled syndio-specific polymerization of styrene catalyzed by ferrocenyl functionalized half-sandwich scandium complexes

机译：铁茂酮官能化半三明治钪配合物催化氧化铜控制的苯乙烯的特异性聚合

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摘要

Redox-controlled polymerization is one of the new and efficient strategies to precisely construct the microstructures of polymeric materials, and thus has received increasing attention in the chemical community. Salt metathesis of ScCl3 with 1 equiv. of Fc(1-C9H6)Li (where Fc = ferrocenyl group), followed by the addition of 2 equiv. of LiCH2C6H4NMe2-o in THF at room temperature gave the ferrocenyl functionalized half-sandwich scandium bis(o-dimethylaminobenzyl) complex [Fc(1-C9H6)]Sc(CH2C6H4NMe2-o)(2) (1) in 89% isolated yield. This complex was characterized by elemental analysis, FT-IR spectroscopy, NMR spectroscopy and single-crystal X-ray diffraction. Treatment of 1 with 1 equiv. of [Ph3C][B(C6F5)(4)] in THF generated the THF-coordinated cationic half-sandwich scandium mono(o-dimethylaminobenzyl) complex {[Fc(1-C9H6)]Sc(CH2C6H4NMe2-o)}{[B(C6F5)(4)]} (2-THF2). Switching in situ between the oxidized and reduced forms of active THF-free species (originally generated from 1/[Ph3C][B(C6F5)(4)] in situ) resulted in the redox-controlled syndio-specific polymerization of styrene.
机译：氧化还原控制聚合是精确构建高分子材料微观结构的有效新策略之一，因此受到化学界越来越多的关注。ScCl3与1当量的Fc（1-C9H6）Li（其中Fc=二茂铁基）盐复分解，然后在室温下在THF中添加2当量的LiCH2C6H4NMe2-o，得到二茂铁基官能化半三明治钪双（o-二甲氨基苄基）络合物[Fc（1-C9H6）]Sc（CH2C6H4NMe2-o）（2）（1），分离产率为89%。通过元素分析、FT-IR光谱、NMR光谱和单晶X射线衍射对该配合物进行了表征。用1当量[Ph3C][B（C6F5）（4）]在THF中处理1，生成THF配位阳离子半三明治钪单（o-二甲氨基苄基）络合物{[Fc（1-C9H6）]Sc（CH2C6H4NMe2-o）}{[B（C6F5）（4）]}（2-THF2。在氧化和还原形式的活性四氢呋喃自由物种（最初由1/[Ph3C][B（C6F5）（4）]原位生成）之间的原位切换导致苯乙烯的氧化还原控制间规聚合。

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    Zhong Yi; Li Min; Deng Meng; Gong Mingliang; Xie Hongzhen; Luo Yunjie;

  • 作者单位

    Ningbo Univ Sch Mat Sci &

    Chem Engn Key Lab Adv Mass Spectrometry &

    Mol Anal Zhejiang Ningbo 315211 Peoples R China;

    Ningbo Univ Sch Mat Sci &

    Chem Engn Key Lab Adv Mass Spectrometry &

    Mol Anal Zhejiang Ningbo 315211 Peoples R China;

    NingboTech Univ Sch Biol &

    Chem Engn Ningbo 315100 Peoples R China;

    Barstow Sch Ningbo Campus Ningbo 315201 Peoples R China;

    Ningbo Univ Sch Mat Sci &

    Chem Engn Key Lab Adv Mass Spectrometry &

    Mol Anal Zhejiang Ningbo 315211 Peoples R China;

    Ningbo Univ Sch Mat Sci &

    Chem Engn Key Lab Adv Mass Spectrometry &

    Mol Anal Zhejiang Ningbo 315211 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;无机化学;
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