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首页> 外文期刊>Inorganic Chemistry Communications >Synthesis, characterization of carbon-bridged Bis(phenolate) neodymium complexes and their catalytic activity for ring-opening polymerization of cyclic esters
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Synthesis, characterization of carbon-bridged Bis(phenolate) neodymium complexes and their catalytic activity for ring-opening polymerization of cyclic esters

机译:碳桥联双酚盐钕配合物的合成,表征及其对环酯开环聚合的催化活性

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摘要

Three carbon-bridged bis(phenolate) neodymium complexes, [(MBMP)2Nd(μ~3-Cl)Li(THF)2Li(THF)] (1), [(MBBP)2Nd(μ~3-Cl)Li(THF)2Li(THF)] (2) and [(THF)2Nd(EDBP)2Li(THF)] (3) have been synthesized by one-pot reaction of NdCl3 and LiCH2SiMe3 with 6,6'-methylenebis(2-terr-butyl-4-methylphenol) (MBMP-H2), 6,6'-methylenebis(2,4-di-tert-butylphenol) (MBBP-H2) or 6,6'-(ethane- 1,1-diyl)bis(2,4-di-tert-butylphenol) (EDBP-H2), respectively, in a molar ratio of 1:4:2. The definitive structures of complexes 2 and 3 were determined by X-ray diffraction studies. Experimental results show that 1-3 efficiently initiate the ring-opening polymerization (ROP) of ε-caprolactone and ROP of L-lachde.
机译:三种碳桥联的双酚盐钕络合物,[(MBMP)2Nd(μ〜3-Cl)Li(THF)2Li(THF)](1),[(MBBP)2Nd(μ〜3-Cl)Li( THF)2Li(THF)](2)和[(THF)2Nd(EDBP)2Li(THF)](3)是通过NdCl3和LiCH2SiMe3与6,6'-亚甲基双(2-terr)的一锅反应合成的-丁基-4-甲基苯酚)(MBMP-H2),6,6'-亚甲基双(2,4-二叔丁基苯酚)(MBBP-H2)或6,6'-(乙烷-1,1-二基)双(2,4-二叔丁基苯酚)(EDBP-H2)的摩尔比分别为1:4:2。配合物2和3的确定结构通过X射线衍射研究确定。实验结果表明1-3能有效引发ε-己内酯的开环聚合(ROP)和L-lachde的ROP。

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