[en] A considerable polarization (up to 38%) of the low temperature luminescence of the ¹B₂ - ¹A₁ transforma on of NO₂^- ions in CsBr and Cs J crystals is detected. The ion plane position on the crystal plane (100) and ion symmetry axis direction along > 100 < are determined by investigation of Raman spectra on intramolecular vibrations and the form of luminescence polarization angular dependence. The dependence of radiation polarization degree decrease with the temperature permits to single out 2 different reorientation processes in the excited electron state