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Experimental and theoretical investigation of vibrational spectra of copper phthalocyanine: polarized single‐crystal Raman spectra, isotope effect and DFT calculations
Author(s) -
Basova Tamara V.,
Kiselev Vitaly G.,
Schuster BrittElfriede,
Peisert Heiko,
Chassé Thomas
Publication year - 2009
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.2375
Subject(s) - raman spectroscopy , chemistry , density functional theory , kinetic isotope effect , spectral line , molecular vibration , crystal (programming language) , molecule , copper , wavenumber , single crystal , molecular physics , isotope , phthalocyanine , isotopic shift , computational chemistry , analytical chemistry (journal) , deuterium , crystallography , atomic physics , optics , physics , organic chemistry , astronomy , quantum mechanics , computer science , programming language
The IR‐ and Raman spectra of copper phthalocyanine (CuPc), as well as the isotopic wavenumber shifts upon 15 N substitution in CuPc, were investigated experimentally and theoretically. The symmetry of molecular vibrations was determined using polarized Raman spectra of an oriented CuPc single crystal. Density functional theory (DFT) calculations were used for the detailed assignment of different bands in the vibrational spectra of CuPc. Theoretically predicted geometry, wavenumbers and isotopic shifts are in a very good agreement with the experimental values. A comparison of experimentally obtained isotopic shifts with theoretical predictions allowed us to reveal some characteristic features of normal vibrations of CuPc molecule. Copyright © 2009 John Wiley & Sons, Ltd.