in neat (no solvent) (argon); heating in a corundum crucible to 1500°C, slow cooling to 600°C with 10 K per h, then to room temp.; removal of excess Al with dilute aq. HCl, manual sepn. of byproducts; elem. anal.;
参考文献
Angewandte Chemie - International Edition in English, , vol. 35, # 21 p. 2499 - 2500
