OgTs₄ or oganesson tetratennesside is a predicted chemical compound that has been calculated to be stable but has never been observed. It is formed of Oganesson and tennessine. It has 5 atoms and 586 electrons.
- Loveland, Walter (1 June 2021). "Relativistic effects for the superheavy reaction Og + 2Ts2 → OgTs4 (Td or D4h): dramatic relativistic effects for atomization energy of superheavy Oganesson tetratennesside OgTs4 and prediction of the existence of tetrahedral OgTs4". Theoretical Chemistry Accounts 140 (75). doi:10.1007/s00214-021-02777-2. https://link.springer.com/article/10.1007/s00214-021-02777-2. Retrieved 30 June 2021.