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Peculiar intensity distribution in the Raman spectra of copper organoacetylides
Author(s) -
Garbuzova I. A.,
Gol'ding I. R.,
Schegolikhin A. N.
Publication year - 1995
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.1250260602
Subject(s) - raman spectroscopy , copper , acetylide , spectral line , chemistry , photoconductivity , substituent , analytical chemistry (journal) , materials science , photochemistry , stereochemistry , optics , organic chemistry , physics , optoelectronics , astronomy
Raman spectra of polymeric photoconductive copper organoacetylides (RCCCu) x differ substantially from the spectra of other Cu I or Ag I compounds which lack photoconductive properties. Also, there is a significant redistribution of band intensities in the Raman spectra of the copper organoacetylides compared with the spectra of the parent acetylenes. The triple bond stretching vibration, v (CC), at ca 1950−1900 cm −1 , v (C‐C) at ca 950−700 cm −1 and the lines at ca 600−500 cm −1 , caused by deformations of angles between the multiple and single bonds, in the spectra of copper acetylide exhibit an increase in intensity by a factor of 10–100 compared with the spectra of parent acetylenes RCCH. The vibrational bands characteristic of the R substituent itself seem to be very weak in comparison with the unusually strong band of the acetylide in the lower Raman shift range. The origin of these unusual Raman intensities in copper organoacetylides is discussed.