in neat (no solvent, solid phase)
heating of the components in a sealed ampoule to 180°C (within 24 h) and annealing at 340°C for 2 days; sublimation at 540°C (high vac.) in a Ta vessel;
参考文献
Beck, H. P.; Schuster, M.
Zeitschrift fuer Anorganische und Allgemeine Chemie, 1993 , vol. 619, p. 690 - 694
