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Na2Te is Fluorite structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Na1+ is bonded to four equivalent Te2- atoms to form a mixture of corner and edge-sharing NaTe4 tetrahedra. All Na–Te bond lengths are 3.17 Å. Te2- is bonded in a body-centered cubic geometry to eight equivalent Na1+ atoms.
NaTe3 crystallizes in the trigonal P-3c1 space group. The structure is three-dimensional. there are three inequivalent Na sites. In the first Na site, Na is bonded to six Te atoms to form corner-sharing NaTe6 octahedra. The corner-sharing octahedra tilt angles range from 2–12°. There are three shorter (3.19 Å) and three longer (3.26 Å) Na–Te bond lengths. In the second Na site, Na is bonded to six Te atoms to form corner-sharing NaTe6 octahedra. The corner-sharing octahedra tilt angles range from 2–8°. There are three shorter (3.23 Å) and three longer (3.24 Å) Na–Te bond lengths. In the third Na site, Na is bonded to six Te atoms to form corner-sharing NaTe6 octahedra. The corner-sharing octahedra tilt angles range from 8–12°. There are three shorter (3.20 Å) and three longer (3.25 Å) Na–Te bond lengths. There are three inequivalent Te sites. In the first Te site, Te is bonded in a distorted linear geometry to two Na and one Te atom. The Te–Te bond length is 2.88 Å. In the second Te site, Te is bonded in a distorted see-saw-like geometry to two Na and two Te atoms. The Te–Te bond length is 2.84 Å. In the third Te site, Te is bonded in a distorted linear geometry to two Na atoms.