Abstrab. We derive symmetry selection rules for polarized resonance inelastic x-ray scattering (RIXS) in randomly oriented molecules belonging Io any of the 32 crystzlographic point groups or to the two groups of linear molecules. Campact formulae are derived for cross sections of RIXS processes in randomly oriented molecules for photons of arbitrary polarization: linear, circular or elliptical polarization. It is shown that a specificarion of polarization ratios of RIXS cross sections yields sufficient information IO permit an unequivocal identification of the symmetry species of the occupied and unoccupied molecular orbitals (MOS). The given tabulation of u s symmetry selection rules ean be used as a quick guide to assign symmetry properties of molecules of experimental interest.

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