Studies of U(C(5)H(5))(3)Cl : Reorientational motions of cyclopentadienyl rings
Inelastic neutron scattering experiments have been performed on polycrystalline samples of U(C(5)H(5))(3)Cl from 5 K to 300 K to examine the quasielastic scattering that occurs from the hydrogen atoms in the cyclopentadienyl rings. Analysis of the scattering shows that a reorientational mode consistent with a 2pi/5 process is present. At 300 K, the proton correlation time is 4.2 x 1.0 E-12 and is associated with an activation energy of 4.9 kJ/mol. At the lowest temperatures the effective potential barrier for jump processes automatically increases with decreasing temperature. This makes it more difficult to see the quasielastic scattering from the motion of the H atoms at low temperature.
Bibliographic Reference: Article: Molecular Physics, Vol. 81 (1994) No. 2, pp. 369-383
Record Number: 199410307 / Last updated on: 1994-11-28
Original language: en
Available languages: en