High resolution photoelectron imaging of cryogenically cooled alkaline-earth metal complexes with the BO₂ superhalogen, MBO₂ ^- (M = Ca, Sr, Ba).

ABSTRACT: The BO₂ molecule is a superhalogen with a very high electron affinity, resulting in an extremely stable BO₂ ^- anion suitable as a building block to form ionic compounds. Here we report the generation of M(BO₂ ^-) (M = Ca, Sr, Ba) complexes and the investigation of their structures and bonding using high-resolution cryogenic photoelectron imaging. All three M(BO₂ ^-) alkaline-earth complexes are found to have linear M(O-B-O^-) (¹Σ⁺) structures. Photodetachment removes an electron from the alkaline-earth metal atom and produces the neutral M⁺(O-B-O^-) (²Σ⁺) ionically bonded ground state. The change of the charge state on the metal center induce

SUBMITTER: Gao HW 

PROVIDER: S-EPMC12720926 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature