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Vibrational spectra and conformation of 2,3‐diiodobuta‐1,3‐diene
Author(s) -
Karlsson A.,
Klaeboe P.,
Nielsen C. J.
Publication year - 1993
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250240506
Subject(s) - raman spectroscopy , conformational isomerism , chemistry , diene , infrared spectroscopy , spectral line , infrared , planar , solid state , analytical chemistry (journal) , polymerization , molecule , organic chemistry , optics , physics , polymer , natural rubber , computer graphics (images) , astronomy , computer science
Raman and infrared spectra of the very unstable compound 2,3‐diiodobuta‐1,3‐diene were recorded in the crystalline state at low temperatures in the spectral ranges 3300–10 and 4000–200 cm −1 , respectively. Owing to a rapid polymerization rate at room temperature, only incomplete IR data were obtained of the sample in CCl 4 solution. The vibrational spectra were analysed and support a planar anti conformer present in the cyrstal. The vibrational assignments are presented, supported by force constant calculations.