@Article{, title={Construct the Character Table of D7h Point Group and Apply it for Classify the (3N-6) Modes of Vibration for the [7] Cyclacene (Linear) Monoring Molecule}, author={Rehab Majed Kubba}, journal={Iraqi Journal of Science المجلة العراقية للعلوم}, volume={60}, number={10}, pages={2102-2113}, year={2019}, abstract={The character table or the table of eigen values for the D7h point group, which is notfound in the literature was constructed. The constructed table is used to classify allmodes of the vibrational frequencies of the IR and Raman spectra for any compoundor molecule that has the D7h symmetry in the Point Group. For that, it was used forclassifying all the modes of vibrational frequencies of the [7] cyclacene (linear)monitoring molecule, possessing D7h symmetry. The constructed table was used toclassify the symmetry species for the total degrees of freedom, total degrees oftransition, total degrees of rotation and for the total degrees of modes of vibration(3N-6) for this tube. The character table was also used to determine the active andinactive modes of vibration in the IR and Raman spectra.Also,determining thepolarized and non-polarized vibrational frequencies in the Raman spectrum, andused for describing the complete physical structure of the studied molecule afterextracting its geometric shape. The methods of quantum mechanics calculationsPM3 and DFT were used for this purpose applying the Gaussian 09 program.

} }