Structures of LaH10 and YH10 studied in the paper "stability and superconductivity of Lanthanum and Yttrium decahydrides" (full text available here https://arxiv.org/abs/2001.05305). These are the lowest-energy structures resulting from using the AIRSS package (https://www.mtg.msm.cam.ac.uk/Codes/AIRSS), provided as Crystallographic Information (.cif) files. These can be converted to desired formats using the c2x software, available at https://www.c2x.org.uk/. These structures make up the phase diagram for LaH10 and YhH10 between ~200 and 400GPa, and exhibit high-temperature, conventional superconductivity.