Localization of holes in tallium nitrate (I)
In the present work, the EPR method identified paramagnetic centers formed in TlNO3 under-irradiation at 77 K and 300 K. Their spectroscopic characteristics were determined, which correspond to the NO3 and NO2 radicals. The paramagnetic center NO3 is classified as thermally stable NO3 (B) at 77 K. Radicals NO3 (B) exist in two forms, I and II, which are distinguished by their spatial orientation. The accumulation of paramagnetic centers NO3 and NO2 and the thermal stability of NO3 have been studied. The optical reflection spectra of polycrystalline TlNO3 samples were studied. The final radiolysis products of thallium nitrate, which are nitrite and peroxonitrite ions, are determined.