\chem{[C_{60}]_{\chemindex{n}}}-oligomers (
n=2,
3, and
4) as well as
\chem{C_{60}} dimers partially bridged by oxygen atoms or a
\chem{NH} group. The applicability of the scheme for finding the ground state of these systems was carefully checked against more sophisticated methods including an all-electron, self-consistent (SCF) scheme based on the local-density-approximation (LDA), and the recently developed generalized-gradient approximation (GGA). We present Raman intensities for the vibrations of the
\chem{C_{60}} oligomers, obtained in the framework of the bond polarization model, and compare with recent experimental data.