中华医学超声杂志

应用化学 ›› 2010, Vol. 27 ›› Issue (09): 1108-1110.DOI: 10.3724/SP.J.1095.2010.90786

• 研究简报 • 上一篇    下一篇

双苯甲酰丙酮缩乙二胺合钴(II)配合物的合成、表征及催化丁二烯聚合

王保林1,2,龚狄荣2,吴广峰1*,张学全2   

  1. (1.长春工业大学化学工程学院 长春 130012；2.中国科学院长春应用化学研究所 长春)
  • 收稿日期:2009-11-27 修回日期:2010-01-10 出版日期:2010-09-10 发布日期:2010-09-10
  • 通讯作者: 吴广峰，男，博士，教授; E-mail:gfwu@mail.ccut.edu.cn; 研究方向：乳液聚合、高分子复合材料和塑料改性
  • 基金资助:
    国家科技支撑项目(2007BAE14B01-06)

Co(Ⅱ) Complex Bearing N,N′-Dibenzoylactoneethylenediamine:Synthesis, Characterization, and Its Catalytic Property on 1,3-Butadiene Polymerization

WANG Bao-Lin1,2, GONG Di-Rong2, WU Guang-Feng1*, ZHANG Xue-Quan2   

  1. (1.Department of Chemical Engineering,Changchun University of Technology.Changchun 130012;
    2.Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun)
  • Received:2009-11-27 Revised:2010-01-10 Published:2010-09-10 Online:2010-09-10

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摘要：

合成了双苯甲酰丙酮缩乙二胺合钴(Ⅱ)配合物，利用X单晶衍射技术和元素分析技术对其进行了表征。 该化合物属单斜晶系,空间群P21/c，晶包参数为：a=1.7297(9) nm,b=0.7148(4) nm,c=2.1099(12) nm,β=110.752(2)°,V=1.83807(13) nm3,Dx=1.465 Mg/m3,Z=4,μ=0.090 mm-1,F(000)=844,S=1.01。 对于3103(I＞2σ(I))个可观察点，最终偏差因子R1=0.030,wR2=0.074。 Schiff 碱的4个配位原子[N(1),N(2),O(1),O(2)]与中心金属Co(Ⅱ)配位，形成轻度扭曲的平面正方形N2O2Co构型。考察了该化合物在不同共催化剂的活化下催化丁二烯聚合的行为，结果表明，该化合物在氯铝(Al2Et2Cl3、AlEt2Cl)的活化下对丁二烯聚合具有较高的活性和顺-1,4选择性。

关键词: 钴(II)配合物, Schiff碱, 丁二烯, 聚合

Abstract:

The title complex Co(bzacen)(bzacen=N,N′-dibenzoylactoneethylenediamine) was prepared and characterized by X-ray diffraction analysis and elemental analysis. In the solid state, the cobalt complex crystallized in monoclinic system, with space group P21/c, a=1.7297(9) nm, b=0.7148(4) nm, c=2.1099(12) nm, β=110.752(2)°, V=1.83807(13) nm3, Dx=1.465 Mg/m3, Z=4, μ=0.090 mm-1, F(000)=844, S=1.01. The structure was refined to R1=0.030 and wR2=0.074 for the observed 3103 reflections with I＞2σ(I). The Co atom lies in a slightly distorted square-planar geometry composed of two coordinating nitrogen atoms and two coordinating oxygen atoms. The complex was investigated as precursor for butadiene polymerization, and it showed high activity and high cis-1,4 selectivity when activated by cocatalyst Al2Et2Cl3 or AlEt2Cl.

Key words: cobalt complex, Schiff base, butadiene, polymerization.

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