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Rare-Earth-Silyl ate-Complexes Opening a Door to Selective Manipulations.

ABSTRACT: The reactions of a number of rare-earth (RE) trichlorides and an oligosilanylene diide containing a siloxane unit in the backbone in DME are described. The formed products of the type [(DME)₄·K][(DME)·RE(Cl)₂{Si(SiMe₃)₂SiMe₂}₂O] (RE = Y, La, Ce, Pr, Sm, Tb, Dy, and Er) are disilylated dichloro metalate complexes and include the first examples of Si-La and Si-Pr compounds as well as the first structurally characterized example of a Si-Dy complex. A most intriguing aspect of the synthesis of these complexes is that they offer entry into a systematic study of the still largely unexplored field of silyl RE complexes by the possibility of ligand exchange reactions under preservation of the Si-RE interaction. This was demonstrated by the conversion of [(DME)₄·K][(DME)·RE(Cl)₂{Si(SiMe₃)₂SiMe₂}₂O] to [(DME)₄·K][Cp₂Y{Si(SiMe₃)₂SiMe₂}₂O].

SUBMITTER: Pocheim A

PROVIDER: S-EPMC8188526 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Rare earth separations by selective borate crystallization.

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