Alkyl bridged complexes of the group 3A and lanthanoid metals as homogeneous ethylene polymerisation catalysts

The salt-free diamido complexes of lanthanide supported by β-diketiminate: Synthesis, characterization, and their catalytic activity for the polymerization of acrylonitrile and ε-caprolactone

“…Details of the intensity data collection and crystal data are given in Table 4. The crystal structures of these two complexes were solved by direct Table 4 Details of the crystallographic data collection and refinement for 3 and 4 3 4 methods and refined by full-matrix least-squares procedures based on |F| 2 . All the non-hydrogen atoms were refined anisotropically.…”

“…The organolanthanide amide has been found to be the important precatalysts in a variety of homogeneous catalysis, including hydroamination of alkyne and alkene and the polymerization of polar monomers [1][2][3][4][5]. However, almost all of the work focused on the complexes with a dianionic ancillary ligand and one amido group.…”

Synthesis and X-ray structure of a borohydrido metallocene of neodymium and its use as pre-catalyst in Nd/Mg dual-component ethylene and isoprene polymerisations

“…After the pioneer work of Ballard [5] and Watson [6], Marks reported in 1985 that lanthanide hydrides (Cp* 2 LnH) 2 (Cp* = C 5 Me 5 ), and particularly those of early lanthanides (La, Nd, Sm) display a tremendous activity towards ethylene polymerisation [7]. This activity, extremely high according to Gibson's scale [8], could be compared to that of homogeneous Ziegler Natta group 4 catalysts.…”

Catalytic Olefin Polymerization

“…(1]s-C s Me s )2 Lu(Yb)CH 3 -ether polymerize ethylene, in the absence of Al alkyls, with high activity (66 g PE (mmol LU)-l h-1 atm-1 at 313 K). Lower activities are reported by Ballard et al [56] for dimeric lanthanide alkyl complexes.…”