Homogeneous ethylene-polymerization catalysts based on alkyl cations of the rare-earth metals: are dicationic mono(alkyl) complexes the active species?
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Biomedical subjects
Stefan Arndt
Publications and source records attributed to Stefan Arndt.
The first structurally characterized cationic lanthanide-alkyl complexes.
Reaction of rare earth metal-alkyl complexes [Ln(CH2SiMe3)3(THF)2](Ln = Y, Lu) with B(C6X5)3(X = H, F) in the presence of crown ethers gives crystallographically characterized ion pairs [Ln(CH2SiMe3)2(CE)(THF)n]+[B(CH2SiMe3)(C6X5)3]-(CE = [12]-crown-4, n = 1; CE = [15]-crown-5 and [18]-crown-6, n = 0).
Alkylation↗
Mono(cyclopentadienyl) complexes of the rare-earth metals.
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