Community Research and Development Information Service - CORDIS

  • European Commission
  • Publications
  • Molecular structure and charge distribution in organometallics of the 4f and 5f elements - V : Crystal and molecular structure of tetrakis (eta(5)-cyclopentadienyl)-thorium(IV) and the temperature dependence of its electrical dipole moment


The crystal and molecular structure of Th(C(5)H(5))(4) was investigated by single crystal X-ray diffraction. The compound crystallises in tetragonal form with a = 868.3(1), c = 1064.4(3) pm with two molecules per unit cell. The average Th-Cp distance of 260.6 pm is in good agreement with the predicted distance of 258.8 pm, and is larger than the corresponding distance of the uranium compound (253.8 pm). The temperature dependence of the dipole moment of the title compound, of thorium tetramethylcyclopentadienide (Cp'(4)Th), and of the homologous uranium compound in benzene solution is discussed with respect to their molecular structure.

Additional information

Authors: MAIER R, Forschungszentrum Karlsruhe GmbH (DE);KANELLAKOPULOS B, Forschungszentrum Karlsruhe GmbH (DE);APOSTOLIDIS C, JRC Karlsruhe (DE);MEYER D, JRC Karlsruhe (DE);REBIZANT J, JRC Karlsruhe (DE)
Bibliographic Reference: Article: Journal of Alloys and Compounds, Vol. 190 (1993) pp. 269-271
Record Number: 199311225 / Last updated on: 1994-11-29
Original language: en
Available languages: en
Follow us on: RSS Facebook Twitter YouTube Managed by the EU Publications Office Top