in not given formation at reaction of SnO2 in HF with excess CoF2 at 175-200°C;;
参考文献
Gmelin Handbook: Sn: MVol.C1, 5.6.1, page 171 - 172
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McClelland, A. L.; Fawcett, F. S.; Coffmann, D. D.
Muetterties, E. L., Cullock, C. W. (in: Jolly, W. L., Preparative Inorganic Reaction, Bd. 2, New York 1965, S. 237/99)
ammonia in water byproducts: SiF4; Na2SiO3 dissolved in aq. NH3; soln. added dropwise to CrCl3 soln.; slurry filtered; washed thoroughly with deionized water; dried; ground; pelleted; calcined at 400°C under N2; treated with anhydrous HF at 350°C for 100 h; purged with N2;
