The infrared spectra of polycrystalline benzene and fully deuterated benzene have been examined under high resolution. All ``u'' fundamentals (except ν16 of C6D6) have been observed and most crystal multiplets have been resolved, many to the full extent predicted. Accurate frequencies at two low temperatures are presented.
Absolute intensities have been measured at two temperatures for all fundamentals observed. An interference method has been used to measure sample thickness. The results are compared to existing data on three phases of benzene. The sum of all integrated intensities for a given molecule is empirically found to be independent of state of aggregation, and a sum rule expressing this fact is derived and criticized.
Examines the spectral patterns corresponding to rotational, vibrational,
and electronic energy levels, and the relationship that can be established
between these observed patterns and the parameters of the molecular
model.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.