Cesium's off-the-map valence orbital
Artikel i vetenskaplig tidskrift, 2017

The Td-symmetric [CsO4]+ ion, featuring Cs in an oxidation state of 9, is computed to be a minimum. Cs uses outer core 5s and 5p orbitals to bind the oxygens. The valence Cs 6s orbital lies too high to be involved in bonding, and contributes to Rydberg levels only. From a Molecular Orbital perspective, the bonding scheme reminds of XeO4: an octet of electrons to bind electronegative ligands, and no low-lying acceptor orbitals on the central atom. In this sense, Cs+ resembles hypervalent Xe.

Inorganic chemistry

Core electron reactivity

oxidation

Bond Theory

Valence

Författare

Maarten Goesten

Technische Universiteit Eindhoven

Cornell University

Martin Rahm

Cornell University

Matthias Bickelhaupt

Radboud Universiteit

Vrije Universiteit Amsterdam

Emiel Hensen

Technische Universiteit Eindhoven

Angewandte Chemie

14337851 (ISSN) 15213773 (eISSN)

Vol. 56 33 9772-9776

Ämneskategorier (SSIF 2011)

Teoretisk kemi

DOI

10.1002/ange.201704118

Mer information

Senast uppdaterat

2026-06-24