Reorientations in (Mg(H Sub 2 O) sub 6 )(ClO Sub 4 ) sub 2 Studied by the Proton Magnetic Resonance and the Quasielastic Neutron Scattering Methods

摘要

Proton magnetic relaxation measurements carried out for (Mg(H sub 2 O)XL6)(ClO sub 4 ) sub 2 revealed two processes responsible for T sub 1 vs temperature dependence: one connected with H sub 2 O 180deg flips about the symmetry axes and second connected with a tumbling of the complex cation. Quasielastic neutron scattering measurements gave another evidence of H sub 2 O 180deg flips. The reorientational corelation times, which in the 273 K - 325 K region are of the order of picoseconds, as derived from NMR coincide perfectly well with those derived from QNS. (Atomindex citation 13:646133)