Foundry users, working with staff, performed spectroscopic and structural characterization of an einsteinium coordination complex.
Significance and Impact
New strategies developed to work with minute sample sizes of Es-254 reveal an intermediate spin-orbit coupling scheme and open the door to studying the fundamental coordination properties of the transplutonium actinides.
- Element-specific characterization techniques, luminescence spectroscopy and X-ray absorption spectroscopy, were employed to characterize einsteinium (Es), using less than 200 ng of material.
- The energy of the L3 absorption edge and a bond distance for Es-254 were measured.
- Photophysical measurements revealed a hypsochromic shift upon metal complexation, opposite from what has been previously observed with other f-elements.
K.P. Carter, K. M. Shield, K.F. Smith, Z.R. Jones, J.N. Wacker, L. Arnedo-Sanchez, T.M. Mattox, L. M. Moreau, K. E. Knope, S. A. Kozimor, C.H. Booth, R.J. Abergel. Nature. 2021, 590, 85–88. DOI: 10.1038/s41586-020-03179-3
Read the news release on the first measurements of einsteinium.