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A relativistic DFT study of cyclopentadienyl actinide complexes with no transition-metal analogues by M. BenYahia; L. Belkhiri; A. Boucekkine is a Chemistry article available to read on EtoBox.
What is A relativistic DFT study of cyclopentadienyl actinide complexes with no transition-metal analogues about?
The geometry and electronic structure of several tris and tetrakis-cyclopentadienyl thorium and uranium complexes have been investigated using Density Functional theory (DFT) calculations in the framework of the relativistic zeroth-order regular approximation (ZORA) implemented in the ADF (Amsterdam density functional) program. In all cases, the important interaction between the metal 5f orbitals and the Cp 3 moiety is brought to light. However, coordination with a fourth ligand like H À or Cl À leading to Cp 3 AnL species involves mainly the metal 6d orbitals, whereas in the case of L = Cp À , the 5f uranium orbitals act also efficiently. The actinide 5f orbitals are more efficient in uranium than in thorium for metal to ligand bonding. Cyclopentadienyl to uranium donation is enhanced when the metal ion charge increases. Finally, our calculations indicate that the Cp 3 UH structure could be thermodynamically stable, although it has not yet been synthesized.
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It is typically read by researchers, students, and practitioners in Chemistry.
- Author
- M. BenYahia; L. Belkhiri; A. Boucekkine
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0166-1280)
- Published
- 2006
- Language
- EN
- Field
- Chemistry (Physical Sciences)