om5b00877_si_002.cif (195.39 kB)
Mixed Allyl–Borohydride Lanthanide Complexes: Synthesis of Ln(BH4)2(C3H5)(THF)3 (Ln = Nd, Sm), Characterization, and Reactivity toward Polymerization
dataset
posted on 2016-02-10, 00:00 authored by Sami Fadlallah, Michaël Terrier, Chloe Jones, Pascal Roussel, Fanny Bonnet, Marc VisseauxNew 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.
