in hydrogen fluoride HF (liquid); HF condenced onto reagent at 77 K, alowed to warm to room temp., left for 0.5 h, decanted, repeated several times; volatiles removed (vac., ambient temp.);

in hydrogen fluoride HF (liquid); HF condenced onto reagent at 77 K, alowed to warm to room temp., left for 0.5 h, decanted, repeated several times; volatiles removed (vac., ambient temp.), Raman, XRD;

in hydrogen fluoride HF (liquid); HF condenced onto reagent at 77 K, alowed to warm to room temp., left for 0.5 h, decanted, repeated several times; volatiles removed (vac., ambient temp.);

in hydrogen fluoride HF (liquid); HF condenced onto reagent at 77 K, alowed to warm to room temp., left for 0.5 h, decanted, repeated several times; volatiles removed (vac., ambient temp.), Raman, XRD;