Figure shows the calculated vibrationally resolved emission spectra using this method. The calculated spectra are a poor simulation of the experimental spectra, as all the complexes have the same spectral shape and FWHM of 93-96 nm. In this case, by not accounting for the slight geometrical changes around the iridium atom between the excited and ground states during the emission spectra, the VH spectra do a poor job of replicating the experimental spectra, although the method has been shown to work for some phosphorescent platinum complexes. Where rotation of pendant groups on a molecule prevents use of the AH method to calculate vibrational emission spectra, one method to allow these calculations is to replace the pendant group with a smaller group or atom that doesn't undergo the same geometric change. In this example, replacing the trimethylsilyl groups with a silane (SiH3) group will retain the heavy atom to damp the vibrational modes of the aryl rings, but remove the methyl groups that rotate to prevent use of the AH model.