SYNTHESIS AND CHARACTERIZATION OF BIS-[2-[[(2-ALKOXYPHENYL)IMINO]METHYL]-PHENOLATO-O,N,O]NICKEL(II) COMPLEXES AND THEIR NORBORNENE POLYMERIZATION
SYNTHESIS AND CHARACTERIZATION OF BIS-[2-[[(2-ALKOXYPHENYL)IMINO]METHYL]-PHENOLATO-O,N,O]NICKEL(II) COMPLEXES AND THEIR NORBORNENE POLYMERIZATION
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DOI：
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发表时间：
2005
影响因子：
4.3
通讯作者：
Dongheng Zhang;S. Jie;Haijian Yang;F. Chang;Wen‐Hua Sun
中科院分区：
文献类型：
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作者：
Dongheng Zhang;S. Jie;Haijian Yang;F. Chang;Wen‐Hua Sun
以水杨醛和2-烷氧基苯胺为原料，通过微波辅助缩合反应合成了一系列水杨醛亚胺，并将其与氯化镍反应生成了六配位的镍配合物。这些镍配合物进行了仔细的表征，并通过X-射线衍射阐明了1a的固体结构。经MAO活化后，镍配合物对异戊二烯均聚具有良好的催化活性。反应参数，如镍前驱体与MAO的比例，单体浓度，反应时间和反应温度，以及配体的性质被发现有显着的催化活性和所得的聚异戊二烯的一些性能的影响。
A series of salicylaldimines, synthesized in high yield via microwave-assisted condensation of salicylaldehyde and 2-alkoxyaniline were allowed to react with nickel chloride to form six-coordinated nickel complexes. These nickel complexes were carefully characterized, and the solid structure of 1a was elucidated by X-Ray diffraction. Activated with MAO, the nickel complexes showed good activity for homopolymerization of norbornene. Reaction parameters, such as the ratio of nickel precursor to MAO, monomer concentration, reaction time and the reaction temperature, as well as the nature of the ligands were found to have significant effects on the catalytic activity and some properties of the resulting polynorbornene.