桥联双β-二亚胺配体二价稀土配合物的合成、表征及其催化性能
Synthesis, Characterization and Catalytic Properties of Bridged Bis(β-diketiminato) Ligand Supported Divalent Rare Earth Complexes
合成了两种新型的桥联双β-二亚胺配体L1H2和L2H2，并在此基础上制备两种二价钐配合物L1Sm (3; Ll = [μ-(1,2-CH2CH2)][N(Me)CH2CH2NC(Me)CHC(Me)NDipp]22-, Dipp=2,6-(iPr)2C6H3)和L2Sm (4; L2 = [μ-(1,3-CH2CH2CH2)][N(Me)CH2CH2CH2NC(Me) CHC(Me)NDipp]22-)，通过核磁共振氢谱、元素分析和单晶X射线衍射对这些化合物进行表征。研究表明，L2Sm和L2Sm在0.1 mo1%的催化剂负载下在碳二亚胺的胍化反应中表现出良好的催化效果，该催化反应不受电子效应影响，但受底物空间位阻和溶解度的影响。
wo new bis(β-diketimine) ligands L1H2 and L2H2 were synthesized. Based on the two ligands, divalent samarium complex L1Sm (3; Ll = [μ-(1,2-CH2CH2)][N(Me)CH2CH2NC(Me)CHC(Me)NDipp]22-, Dipp=2,6-(iPr)2C6H3) and L2Sm (4; L2 = [μ-(1,3-CH2CH2CH2)][N(Me)CH2CH2CH2NC(Me)CHC(Me)NDipp]22-) were prepared. These complexes were characterized by NMR spectroscopy, elemental analysis and single-crystal X-ray diffraction. L1Sm and L2Sm exhibited an excellent conversion with 0.1 mol% catalyst loading during the guanylation reactions. The activity is not affected either by electronic effects, but is influenced by substrate steric hindrance and solubility.
向丽、李彩梅、毛贝贝、吕丹、付文升
无机化学工业化学工业经济化学工业概论
金属有机配合物二价稀土桥联双β-二亚胺胍化反应。
organometallic chemistrydivalent rare-earthbridged bis(β-diketiminato)guanylation.
向丽,李彩梅,毛贝贝,吕丹,付文升.桥联双β-二亚胺配体二价稀土配合物的合成、表征及其催化性能[EB/OL].(2023-06-13)[2025-08-02].http://www.paper.edu.cn/releasepaper/content/202306-30.点此复制
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