Protactinium and the intersection of actinide and transition metal chemistry
Journal Article
·
· Nature Communications
- Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Division
- Univ. de Lille, Lille (France). Physique des Lasers Atomes et Molecules
The role of the 5f and 6d orbitals in the chemistry of the actinide elements has been of considerable interest since their discovery and synthesis. Relativistic effects cause the energetics of the 5f and 6d orbitals to change as the actinide series is traversed left to right imparting a rich and complex chemistry. The 5f and 6d atomic states cross in energy at protactinium (Pa), making it a potential intersection between transition metal and actinide chemistries. Herein, we report the synthesis of a Pa-peroxo cluster, A6Pa4O(O2)6F12 [A = Rb, Cs, (CH3)4N], formed in pursuit of an actinide polyoxometalate. Quantum chemical calculations at the density functional theory level demonstrate equal 5f and 6d orbital participation in the chemistry of Pa and increasing 5f orbital participation for the heavier actinides. Periodic changes in orbital character to the bonding in the early actinides highlights the influence of the 5f orbitals in their reactivity and chemical structure.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1426227
- Journal Information:
- Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 9; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
| New Strategies in Modeling Electronic Structures and Properties with Applications to Actinides | text | January 2019 |
Relativistic quantum chemical calculations show that the uranium molecule U2 has a quadruple bond
|
journal | October 2018 |
Theoretical studies on the oxidation states and electronic structures of actinide-borides: AnB 12 (An = Th–Cm) clusters
|
journal | January 2018 |
Carbon monoxide activation by atomic thorium: ground and excited state reaction pathways
|
journal | January 2019 |
Theoretical prediction of some layered Pa 2 O 5 phases: structure and properties
|
journal | January 2019 |
Similar Records
Actinides: d-or f-transition metals
Energy-Degeneracy-Driven Covalency in Actinide Bonding
Conference
·
Mon Dec 31 23:00:00 EST 1979
· ACS Symp. Ser.; (United States)
·
OSTI ID:6507434
Energy-Degeneracy-Driven Covalency in Actinide Bonding
Journal Article
·
Tue Dec 11 19:00:00 EST 2018
· Journal of the American Chemical Society
·
OSTI ID:1489963