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2013 , Vol. 33 >Issue 08: 1828 - 1833

DOI: https://doi.org/10.6023/cjoc201212041

研究简报

6-苯并咪唑基-2-芳亚胺乙基吡啶锌配合物的合成及其对苯乙烯聚合的催化性能

  • 肖立伟 ,
  • 景学敏 ,
  • 孔洁
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  • 廊坊师范学院化学与材料科学学院 廊坊 065000

收稿日期: 2012-12-24

  修回日期: 2013-02-25

  网络出版日期: 2013-04-07

基金资助

河北省自然科学基金(Nos. B2013408014, B2012408006)和廊坊师范学院博士基金(No. LSEB201103)资助项目.

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Synthesis and Catalytic Behaviors toward Styrene Polymerization of Zinc Complexes Bearing 6-Benzimidazolyl-2-aryliminoethyl Pyridine

  • Xiao Liwei ,
  • Jing Xuemin ,
  • Kong jie
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  • Faculty of Chemistry and Material Science, Langfang Teachers College, Langfang 065000

Received date: 2012-12-24

  Revised date: 2013-02-25

  Online published: 2013-04-07

Supported by

Project supported by the Natural Science Foundation of Hebei Province (Nos. B2013408014, B2012408006) and the Doctoral Foundation of Langfang Teacher’s College (No. LSEB201103).

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摘要

合成了三种不同取代的6-苯并咪唑基-2-芳亚胺乙基吡啶化合物3a～3c及相应的锌配合物6-苯并咪唑基-2-芳亚胺乙基吡啶氯化锌4a～4c, 产物经过核磁共振、红外光谱及元素分析等方法进行了表征, 其中配合物4a的分子结构得到X射线单晶衍射的进一步确证. 4a的晶胞参数为a=9.2524(17) Å, b=16.958(3) Å, c=16.661(3) Å, β=103.089(3)°, 属于单斜晶系, P2(1)/n空间群. 所得锌配合物对苯乙烯聚合具有中等催化活性, 探讨了影响催化活性的各种因素, 活性最高可达1.33×105 g·mol-1(Zn)·h-1. 采用凝胶渗透色谱、核磁共振谱、红外光谱、X射线粉末衍射等表征了所得聚苯乙烯的相对分子量(Mn)为1～2万, 分子量分布较窄(Mw/Mn<1.8), 属于无规聚苯乙烯.

关键词： 苯并咪唑类化合物; 锌配合物; 催化; 苯乙烯聚合

本文引用格式

肖立伟 , 景学敏 , 孔洁 . 6-苯并咪唑基-2-芳亚胺乙基吡啶锌配合物的合成及其对苯乙烯聚合的催化性能[J]. 有机化学, 2013 , 33(08) : 1828 -1833 . DOI: 10.6023/cjoc201212041

Abstract

Three substituted 6-benzimidazolyl-2-aryliminoethyl pyridine derivatives 3a～3c and the corresponding zinc complexes 6-benzimidazolyl-2-aryliminoethyl pyridine zinc dichlorides 4a～4c were synthesized. The products were evidenced by NMR, IR, elemental analysis and molecular structures of complex 4a has been characterized by X-ray diffraction. The unit cell parameters was a=9.2524(17) Å, b=16.958(3) Å, c=16.661(3) Å, β=103.089(3)°, monoclinic, P2(1)/n space group. The zinc complexes exhibited moderate catalytic activities for styrene polymerization. Influencing factors for catalytic activities were investigated and the highest activities reached 1.33×105 g·mol-1(Zn)·h-1. Characterized with GPC, NMR, IR and XRD, the obtained polystyrene was in atactic microstructure, moderate molecular weight (Mn, 1×104～2×104) and narrow molecular weight distrbution (Mw/Mn<1.8).

Key words： benzoimidazole derivative; zinc complex; catalysis; styrene polymerization

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