# Crystal structure of solid (frozen) hydrogen fluoride?

Wikipedia says the HF molecules form zig-zags, but doesn't mention any larger-scale organization. Is it amorphous, similar to glass?

• Amorphous substances don't have crystal structures by definition (the best you can expect is domain structural patterns), so judging from the title you either already know the answer, or don't completely understand the difference between the two. And yes, crystal structure of HF has been determined long time ago (doi.org/10.1107/S0365110X54000497; for CIF see COD-2310333) – andselisk Sep 26 '19 at 18:19