Molecular beam deflection experiments on mixed clusters: Permanent dipole of transition metal-C_(60) compounds

摘要

Gas phase Ti-C_(60) clusters are studied by molecular beam electric deflection. The permanent dipole moment of the TiC_(60) molecule is determined. It is equal to 8.1 ± 1.5 D. This dipole is due to a transfer of electron from the transition metal atom to the C_(60) cage. No dipole is observed for Ti(C_(60))_2 molecules. This is in agreement with the symmetrical dumbbell-like structure that has been previously proposed.