Answers are grounded in this paper and cite their sources.
An infrared analysis of the C—H stretching region of some five-membered heterocyclic molecules (pyrrole, furan, thiophene, selenophene, and tellurophene) has been carried out. Spectra were obtained for gas, liquid, solution (CCl4), and crystal samples. Polarised infrared radiation was employed for crystalline oriented films. Band profiles in the gas phase and polarisation values for the crystal spectra have been used in order to get new assignments for this spectral region.
No takes yet. Share an insight, caveat, or question.
Cataliotti et al. (1976) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: