#English title: IR-Spectroscopic Studies of Phenanthrene In the following project, we have used IR spectroscopy to determine the vibrational structure of phenanthrene orientated in a stretched polyethylene polymer. The individual transitions moments have been determined using the TEM method. The results have then been compared to model and experimental results found in the literature. We conclude that our resultes in generel is in good agreement with the results found by others. However, we have found disagreements, among others is the band at 1396 cm-1 54, which is not found in the literature.