Figure 2.

(a) Representative vibrational Raman spectra of the Xe-N₂ compound at 5, 20 and 33 GPa. Red spectra are from the formed compound in Xe media, whilst blue spectra show the compound formed in N₂ media. As a comparison, vibrational spectra of pure N₂ are shown in black. Inset: Photomicrograph of sample at 5 GPa. Red spectra were taken at position A in the single crystal and blue spectra were taken in the surrounding medium at position B. (b) Representative vibrational Raman spectra of Xe(N₂)₂ in a Xe matrix to pressures of 175 GPa.