Jj. Langer et Gp. Moss, FTIR STUDIES OF TRIMETHYLENE LINKED BIS-DIACETYLENE DERIVATIVES, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 237, 1993, pp. 457-461
FTIR spectra of a series of bis-diacetylenes were studied. An absorpti
on at about 2255 cm-1 due to stretching vibrations of the diacetylene
system (observed in all cases as a relatively intensive peak) has been
found to be very characteristic for these diacetylene derivatives, as
well as a strong coupling of the CH2 wagging vibration modes resultin
g in splitting of the absorption peaks at 1300-1360 cm-1.