Work

Ligand Rearrangement in Cyclononatetraenyl Complexes of the Early Lanthanides

Year: 2025

Type: article

Abstract: Three new lanthanide complexes of the general form [Ln(Cnt)(CntInd)] (Ln = Ce, Pr, and Nd, Cnt = cyclononatetraenyl, and CntInd = cyclononatetraenyl-dihydroindene) have been synthesized from the corresponding LnI3 salt and several equivalents of the KCnt ligand. A novel C-C coupling has been observed between one Cnt- moiety, and one dihydroindene moiety, originating from the collapse of a Cnt unit. The observed CntInd ligand is dianionic, harboring one more electron than a typical Cnt ligand. The complexes are characterized by X-ray diffraction, 1H NMR, and UV-Visible studies. The novel complexes are formed instead of the [Ln(Cnt)3] (Ln = Ce, Pr, and Nd), which are only reported with late lanthanide ions, while lanthanum did not form one or the other complex.

Source: Organometallics

DOI: 10.1021/acs.organomet.5c00343

Authors: Lucie Pedussaut, Angus C. G. Shephard, Nicolas Casaretto, Grégory Danoun, Grégory Nocton

Institutions: Centre National de la Recherche Scientifique, École Polytechnique, Institut Polytechnique de Paris

Language: English

Topic: Organometallic Complex Synthesis and Catalysis

Subfield: Organic Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: green

Funders: Centre National de la Recherche Scientifique, European Research Council, H2020 European Research Council

Awards: G403724067, G5400844625