Monovalent lanthanide(I) in borozene complexes.

ABSTRACT: Lanthanide (Ln) elements are generally found in the oxidation state +II or +III, and a few examples of +IV and +V compounds have also been reported. In contrast, monovalent Ln(+I) complexes remain scarce. Here we combine photoelectron spectroscopy and theoretical calculations to study Ln-doped octa-boron clusters (LnB₈^-, Ln = La, Pr, Tb, Tm, Yb) with the rare +I oxidation state. The global minimum of the LnB₈^- species changes from C_s to C_7v symmetry accompanied by an oxidation-state change from +III to +I from the early to late lanthanides. All the C_7v-LnB₈^- clusters can be viewed as a monovalent Ln(I) coordinated by a η⁸-B₈^2- doubly aromatic ligand. The B

SUBMITTER: Li WL 

PROVIDER: S-EPMC8578558 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature