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(a) Raman spectra of the investigated Omicron subvariants (cf. labels in the inset) in the spectral zone between 600 and 750 cm–1 and (b) bands from different rotamers are extracted from the spectrum and drawn with different colors for better visualization. The values of respective parameters Rt/g and RC/M as computed from the deconvoluted subband areas are listed in the inset. The wavenumbers given in the inset are in units of cm–1 and the abbreviations are defined in the text.
