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  

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

作　　者：肖立伟[1] 景学敏[1] 孔洁[1] 

机构地区：[1]廊坊师范学院化学与材料科学学院,廊坊065000

出　　处：《有机化学》2013年第8期1828-1833,共6页Chinese Journal of Organic Chemistry

基　　金：河北省自然科学基金(Nos.B2013408014;B2012408006);廊坊师范学院博士基金(No.LSEB201103)资助项目~~

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),b=16.958(3),c=16.661(3),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1.33×105g 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.Three substituted 6-benzimidazolyl-2-aryliminoethyl pyridine derivatives 3a^3c and the corresponding zinc complexes 6-benzimidazolyl-2-aryliminoethyl pyridine zinc dichlorides 4a^4e 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）A, b= 16.958（3） A, c=16.661（3） A, r= 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 ×10^5g-mol-1（Zn）·h-1. Characterized with GPC, NMR, IR and XRD, the obtained polystyrene was in atactic microstructure, moderate molecular weight （Mn, 1 × 10^4-2 × 10^4） and narrow molecular weight distrbution （Mw/Mn 〈 1.8）.

关 键 词：苯并咪唑类化合物 锌配合物 催化 苯乙烯聚合 

分 类 号：O643.36[理学—物理化学]