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Xenon and fluorine combine readily. Xenon tetrafluoride is a colorless crystalline material, stable at room remperature. The existence of at least one other fluoride and two oxyfluorides has been demonstrated. The heaviest "inert gas," radon, also reacts with fluorine, yielding a compound less volatile than xenon tetrafluoride.

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Articles you may be interested inThe permanent electric dipole moment and hyperfine interactions in platinum monofluoride, PtF J. Chem. Phys. 137, 054309 (2012); 10.1063/1.4734596 Timeofflight neutron powder diffraction study on the third row transition metal hexafluorides WF6, OsF6, and PtF6 Theoretical study of the vibrational spectra of the transition metal carbonyls M(CO)6 [M=Cr, Mo, W], M(CO)5 [M=Fe, Ru, Os], and M(CO)4 [M=Ni, Pd, Pt] J.

Xenon tetroxide is a yellow solid at low temperature. It has a vapor pressure of about 25 mm-Hg at 0 degrees C. It is unstable at room temperature. The infrared spectrum of the vapor shows it to have tetrahedral symmetry.

The infrared spectra of RuF6 and RhF6 are reported and are interpreted in terms of a regular octahedral structure, point group Oh. The spectrum for RuF6 shows fewer bands than any of the known hexafluoride molecules, presumably owing to a Jahn-Teller effect. The fundamental vibrational frequencies (cm−1) for RuF6 are v1=675, v3=735, v4=275, v5=262; for RhF6, v1=634, v2=595, v3=724, v4=283, v5=269, and v6=192; for RuF6 v2 is estimated to be 573. A broad band arising from an electronic transition in RuF6 is also observed with maxima at 1950 and 1400 cm−1. The symmetry requirements for a Jahn-Teller effect in a regular octahedral hexafluoride molecule are summarized. The evidence for a Jahn-Teller effect in the Eg mode for hexafluoride molecules is reviewed. An analogous effect is not observed for the F2g mode although it is symmetry allowed. Comparison of band widths for (v1+v3) and (v2+v3) permits the following estimates of the Jahn-Teller splittings (cm−1) for the Eg mode: TcF6=80, ReF6=25, and OsF6=54. RhF6, like IrF6, does not show a Jahn-Teller effect of comparable magnitude, presumably because of the ``spin character'' of its Γ8 electronic ground state. The corresponding effect for RuF6 is relatively larger and cannot be evaluated in this way because the band (v2+v3) is so broadened as to make it extremely difficult to characterize.

The infrared spectrum of VOF3 has been studied and interpreted in terms of a C3v molecular symmetry. All six fundamentals have been observed: the a1 frequencies are 1057.8, 721.5, and 257.8 cm−1 and the e frequencies are 806, 308, and 204.3 cm−1. The infrared spectrum of POF3 has also been studied and the lowest e fundamental, earlier observed in the Raman spectrum, has been confirmed.