Figure 3.

The measured VDOS for [Fe(TpivPP)(2-MeHIm)(O₂)] (powder and single crystal) The experimental temperature for the powder sample was 25 K. The in-plane spectrum was taken with the porphyrin plane oriented parallel to the excitation beam at an experimental temperature of 128 K. The out-of-plane spectra were taken with the porphyrin plane oriented perpendicular to the excitation beam at an experimental temperature of 129 K. The in-plane and out-of-plane components are scaled to show their relative contributions to the powder spectrum. The small difference in the value of the highest frequency mode (563 cm⁻¹ powder and 559cm⁻¹ oriented crystal) are believed to be a temperature effect.