Rotational coherence spectroscopy and structure of naphthalene trimer

Rotational coherence spectroscopy (RCS) implemented by time-resolved ionization depletion (TRID) was used to examine the structure of naphthalene trimer. Results provide evidence for a C3h structure in which three symmetrically equivalent naphthalene moieties are oriented with their long axes parallel. Results also show that the sensitivity of ionization detection coupled with the selectivity of mass analysis available through RCS-TRID permit high-resolution analysis not obtainable by other methods.