Mixed Allyl–Borohydride Lanthanide Complexes: Synthesis of Ln(BH4)2(C3H5)(THF)3 (Ln = Nd, Sm), Characterization, and Reactivity toward Polymerization
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- 作者：Sami Fadlallah ; Michaël Terrier ; Chloe Jones ; Pascal Roussel ; Fanny Bonnet ; Marc Visseaux
- 刊名：Organometallics
- 出版年：2016
- 出版时间：February 22, 2016
- 年：2016
- 卷：35
- 期：4
- 页码：456-461
- 全文大小：309K
- ISSN：1520-6041
文摘
New mixed allyl–borohydrido lanthanide complexes Ln(BH4)2(C3H5)(THF)3 (Ln = Nd (1), Sm (2)) could be prepared in good yield by reacting Ln(BH4)3(THF)3 (Ln = Sm, Nd) with 1/2 equiv of Mg(C3H5)2(THF)x. X-ray structure analysis revealed monomeric structures with two terminal BH4 ligands, one π-allyl ligand, and three THF molecules. In an assessment of isoprene polymerization, 1 afforded trans-1,4-polyisoprene in good yield, as a single component or in combination with Mg cocatalyst. Both 1 and 2 were found to be extremely active toward ε-caprolactone polymerization.