Vibrational Frequency and UV-Vis of p-Xylene

Vibrational Frequency


The following motion of vibration for p-Xylene can be displayed using the below buttons, the primary motions displayed can be associated with the IR peak in the experimental vibrational spectrum.

Starting from the region of 500 cm-1the vibration mode can be seen by clicking on the 556.88 cm^-1 button.

The vibrational mode around the region of 700-800 cm-1 can be seen by clicking on the 715. 45 cm^-1 button.

For the vibrational modes around the region of 1000-1500 cm-1 can be seen by clicking on the 1234.24 cm^-1, 1360.04 cm^-1, and 1481.44 cm^-1 buttons.

The vibrational modes around the region 1500-2000 cm-1 can be seen by clicking on the 1579.78 cm^-1, 1648.88 cm^-1, 1764.46 cm^-1, and 1814.27 cm^-1 buttons.

Lastly the vibrational modes around the the 3000 cm-1 region can be seen by clicking on the 3203.27 cm^-1, 3274.5 cm^-1, and 3374.81 cm^-1 buttons.

UV-VIS

The calculated UV-Vis results can be seen in the table 1. From the table, the transition energy and wavelength was determined by choosing the highest oscillator strength available in each basis set.

For the highest oscillator strength, the transition in the DZV basis set gives the highest intensity with a transition energy of 8.51 eV. No experimental data was found for the UV-Vis spectra of p-Xylene.

  Table 1: UV-Vis calculations for p-Xylene.

Wavelength (nm)
Transition Energy (eV)
Oscillator Strength
6-21G
146.44
8.44
1.494207
6-31G
146.53
8.46
1.555011
DZV
150.86
8.51
1.595426


Refrences

1. http://webbook.nist.gov/. IR spectrum for p-Xylene.





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