in neat (no solvent) heating under N2 above 400 °C;
参考文献
Troyanov, S. I.; Mazo, G. N.; Rybakov, V. B.
Russian Journal of Inorganic Chemistry (Translation of Zhurnal Neorganicheskoi Khimii), 1988 , vol. 33, p. 1610 - 1612
Zhurnal Neorganicheskoi Khimii, 1988 , vol. 33, p. 2798 - 2801
