引用本文:
王保林, 龚狄荣, 吴广峰, 张学全. 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[J]. 应用化学,
2010, 27(9): 1108-1110.
doi:
10.3724/SP.J.1095.2010.90786
Citation: WANG Bao-Lin, GONG Di-Rong, WU Guang-Feng, ZHANG Xue-Quan. Co(Ⅱ) Complex Bearing N,N'-Dibenzoylactoneethylenediamine:Synthesis,Characterization,and Its Catalytic Property on 1,3-Butadiene Polymerization[J]. Chinese Journal of Applied Chemistry, 2010, 27(9): 1108-1110. doi: 10.3724/SP.J.1095.2010.90786
Citation: WANG Bao-Lin, GONG Di-Rong, WU Guang-Feng, ZHANG Xue-Quan. Co(Ⅱ) Complex Bearing N,N'-Dibenzoylactoneethylenediamine:Synthesis,Characterization,and Its Catalytic Property on 1,3-Butadiene Polymerization[J]. Chinese Journal of Applied Chemistry, 2010, 27(9): 1108-1110. doi: 10.3724/SP.J.1095.2010.90786
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
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=1.465Mg/m3,Z=4,μ=0.090mm-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。
English
Co(Ⅱ) Complex Bearing N,N'-Dibenzoylactoneethylenediamine:Synthesis,Characterization,and Its Catalytic Property on 1,3-Butadiene Polymerization
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.
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Key words:
- cobalt complex
- / Schiff base
- / butadiene
- / polymerization
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