It has been found that there exist poly-nuclear ionic clusters with oxygen- bridge or flourine-bridge, such as F_3Al-O-AIF_3, F_3lA(?) AlF_3, etc.

• 结果表明:熔体中既有含“氧桥”和“氟桥”的“多核”离子集团,如F3Al-O-AlF_3、F_3Al-AlF_3等;