Comment:
Nitridation in molten state under NH3 flow of (NaPO3)n. Gaussian decomposition parameters were kept constant for the whole range of studied samples. NaPO2.85N0.1, NaPO2.52N0.32, NaPO2.49N0.34, NaPO2.22N0.52,NaO2.21N0.53, NaPO2.15N0.57, NaPO2.03N0.64, NaPO2.03N0.67.