I am using the crystallographic open database and materials project to search for cif file but the exact structure is not mentioned or how can I deduce that the given structure and atomic position is the correct one out of that. for my case, Zr3C2, Zr4C3, and Zr2C?
I have searched this one and each is giving a different space group.
https://materialsproject.org/#search/materials/{%22nelements%22%3A2%2C%22elements%22%3A%22C-Zr%22}