Grueneisen Parameter of Fluorene Raman Lines

The plot of the Fluorene Grueneisen parameter versus v2 shows a linear behavior for  lattice modes. The 95.5 cm-1 mode · does not correspond to the phonon behavior. Polarisation data render B1 symetry for this mode. The normal coordinate analysis of fluorene [55] calculates 95 cm-1 for the  B1 butterfly mode.

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