Fully relativistic study of polyatomic closed-shell E121X<sub>3</sub> (X=I, At, Ts) molecules: effects of Gaunt interaction, relativistic effects and advantages of an exact-two component (X2C) hamiltonian

Publication date: Available online 9 September 2023Source: Computational and Theoretical ChemistryAuthor(s): Luiz Guilherme Machado de Macedo, Marina Vidigal Batista, Bianca Maia Pardini Santos, Ricardo Gargano