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The infrared and Raman spectra of perchloro‐[4] ‐ radialene
Author(s) -
Finseth Dennis H.,
Miller Foil A.
Publication year - 1976
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.1250040306
Subject(s) - raman spectroscopy , crystallite , distortion (music) , infrared , chemistry , infrared spectroscopy , spectral line , ring (chemistry) , crystal (programming language) , crystallography , symmetry (geometry) , crystal structure , analytical chemistry (journal) , materials science , physics , optics , geometry , organic chemistry , optoelectronics , amplifier , programming language , cmos , mathematics , astronomy , computer science
Infrared and Raman spectra are reported for polycrystalline perchloro‐[4]‐radialene and for solutions in CCl 4 and CS 2 . An earlier X‐ray structure determination by van Remoortere and Boer has shown that in the crystal the molecular symmetry is almost D 2 d (puckered ring), but is slightly distorted to C 2 . This distortion was attributed to crystal packing forces. The vibrational spectrum does not show the distortion. The spectra are essentially the same for polycrystalline solid as for solution, and are completely compatible with D 2 d in both states. Assignments are made for a few of the modes where evidence warrants it. Some observations are also made about the mass spectrum, which has a rich structure because of the many isotopic species.