Formation of volatile curium(VI) trioxide CmO3

  title={Formation of volatile curium(VI) trioxide CmO3},
  author={V. P. Domanov and Yu. V. Lobanov},
Thermal oxidation of trace amounts of curium hydride yields a volatile form of CmO2 and the previously unknown trioxide CmO3. They were separated by gas thermochromatography. Under the experimental conditions, the maxima of the deposition zones of Cm oxides on the surface of the quartz column were at 550 ± 25 and 390 ± 25°C, respectively. The calculated enthalpies of adsorption on quartz (kJ mol−1) were 185 ± 25 (for CmO2) and 157 ± 25 (for CmO3). Lower volatility of Cm di- and trioxide… 

Molecular oxides of high-valent actinides

The past decade has been very productive in the field of actinide (An) oxides containing high-valent An. Novel gas-phase experimental and an impressive number of theoretical studies have been

Quantum chemical calculations and experimental investigations of molecular actinide oxides.

The available experimental and theoretical information on gaseous actinide oxides covering both the neutral and the ionic species are reviewed and reliable knowledge of either parameter can enable confident prediction of the other.

Relativistic Multireference Quantum Chemical Study of the Electronic Structure of Actinide Trioxide Molecules.

  • A. Kovács
  • Chemistry, Physics
    The journal of physical chemistry. A
  • 2017
The clarified electronic structures of the investigated AnO3 molecules confirmed the pentavalent character of Am and Cm in their trioxides in contrast to the hexavalent characters of U, Np, and Pu.