Species with data from:

McHugh, K.M.; Eaton, J.G.; Lee, G.H.; Sarkas, H.W.; Kidder, L.H.; Snodgrass, J.T.; Manaa, M.R.; Bowen, K.H., Photoelectron Spectra of the alkali metal cluster Anions: Na-,n=2-5, K-,n=2-7, Rb-,n=2-3, and Cs-,n=2-3, J. Chem. Phys., 1989, 91, 6, 3792, https://doi.org/10.1063/1.456861 .

20 matching species were found.

For each matching species the following will be displayed:

• Chemical name
• Chemical formula
• Structure image (if available)

Click on the name to see more data.

1. Disodium (Na₂)
   
2. Cesium (Cs)
   
3. sodium (Na)
   
4. Dipotassium (K₂)
   
5. Cesium dimer (Cs₂)
   
6. Dirubidium (Rb₂)
   
7. Sodium trimer (Na₃)
8. Potassium trimer (K₃)
9. Sodium tetramer (Na₄)
10. Sodium pentamer (Na₅)
11. Tricesium (Cs₃)
    
12. Potassium heptamer (K₇)
13. Potassium tetramer (K₄)
14. Potassium hexamer (K₆)
15. Potassium pentamer (K₅)
16. Cs2 anion (Cs₂^-)
17. Na2 anion (Na₂^-)
18. Rb3 (Rb₃)
19. CAS Reg. No. 131026-50-1
20. CAS Reg. No. 58799-98-7

© 2026 by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved.

Copyright for NIST Standard Reference Data is governed by the Standard Reference Data Act.