DOE OSTI2020
W25O73 is alpha Rhenium trioxide-like structured and crystallizes in the monoclinic P2/c space group. The structure is three-dimensional. there are thirteen inequivalent W sites. In the first W site, W is bonded to six O atoms to form corner-sharing WO6 octahedra. The corner-sharing octahedra tilt angles range from 0–6°. There are a spread of W–O bond distances ranging from 1.86–2.04 Å. In the second W site, W is bonded to six O atoms to form corner-sharing WO6 octahedra. The corner-sharing octahedra tilt angles range from 1–6°. There are a spread of W–O bond distances ranging from 1.89–2.01 Å. In the third W site, W is bonded to six O atoms to form corner-sharing WO6 octahedra. The corner-sharing octahedra tilt angles range from 2–10°. There are a spread of W–O bond distances ranging from 1.84–2.09 Å. In the fourth W site, W is bonded to six O atoms to form corner-sharing WO6 octahedra. The corner-sharing octahedra tilt angles range from 1–10°. There are a spread of W–O bond distances ranging from 1.84–2.09 Å. In the fifth W site, W is bonded to six O atoms to form a mixture of distorted edge and corner-sharing WO6 octahedra. The corner-sharing octahedra tilt angles range from 2–32°. There are a spread of W–O bond distances ranging from 1.83–2.19 Å. In the sixth W site, W is bonded to six O atoms to form corner-sharing WO6 octahedra. The corner-sharing octahedra tilt angles range from 1–5°. There are a spread of W–O bond distances ranging from 1.89–2.01 Å. In the seventh W site, W is bonded to six O atoms to form corner-sharing WO6 octahedra. The corner-sharing octahedra tilt angles range from 0–3°. There are a spread of W–O bond distances ranging from 1.89–1.97 Å. In the eighth W site, W is bonded to six O atoms to form corner-sharing WO6 octahedra. The corner-sharing octahedra tilt angles range from 1–10°. There are a spread of W–O bond distances ranging from 1.86–2.08 Å. In the ninth W site, W is bonded to six O atoms to form corner-sharing WO6 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. There are a spread of W–O bond distances ranging from 1.89–1.97 Å. In the tenth W site, W is bonded to six O atoms to form corner-sharing WO6 octahedra. The corner-sharing octahedra tilt angles range from 2–9°. There are a spread of W–O bond distances ranging from 1.86–2.06 Å. In the eleventh W site, W is bonded to six O atoms to form corner-sharing WO6 octahedra. The corner-sharing octahedra tilt angles range from 0–5°. There are a spread of W–O bond distances ranging from 1.88–2.00 Å. In the twelfth W site, W is bonded to six O atoms to form a mixture of edge and corner-sharing WO6 octahedra. The corner-sharing octahedra tilt angles range from 1–32°. There are a spread of W–O bond distances ranging from 1.82–2.18 Å. In the thirteenth W site, W is bonded to six O atoms to form a mixture of edge and corner-sharing WO6 octahedra. The corner-sharing octahedra tilt angles range from 7–27°. There are a spread of W–O bond distances ranging from 1.84–2.10 Å. There are thirty-seven inequivalent O sites. In the first O site, O is bonded in a linear geometry to two W atoms. In the second O site, O is bonded in a linear geometry to two W atoms. In the third O site, O is bonded in a linear geometry to two equivalent W atoms. In the fourth O site, O is bonded in a linear geometry to two W atoms. In the fifth O site, O is bonded in a linear geometry to two W atoms. In the sixth O site, O is bonded in a linear geometry to two W atoms. In the seventh O site, O is bonded in a linear geometry to two W atoms. In the eighth O site, O is bonded in a linear geometry to two equivalent W atoms. In the ninth O site, O is bonded in a linear geometry to two W atoms. In the tenth O site, O is bonded in a bent 120 degrees geometry to two W atoms. In the eleventh O site, O is bonded in a linear geometry to two equivalent W atoms. In the twelfth O site, O is bonded in a linear geometry to two W atoms. In the thirteenth O site, O is bonded in a linear geometry to two equivalent W atoms. In the fourteenth O site, O is bonded in a linear geometry to two equivalent W atoms. In the fifteenth O site, O is bonded in a linear geometry to two W atoms. In the sixteenth O site, O is bonded in a linear geometry to two W atoms. In the seventeenth O site, O is bonded in a linear geometry to two W atoms. In the eighteenth O site, O is bonded in a linear geometry to two W atoms. In the nineteenth O site, O is bonded in a linear geometry to two equivalent W atoms. In the twentieth O site, O is bonded in a linear geometry to two W atoms. In the twenty-first O site, O is bonded in a linear geometry to two W atoms. In the twenty-second O site, O is bonded in a linear geometry to two equivalent W atoms. In the twenty-third O site, O is bonded in a linear geometry to two W atoms. In the twenty-fourth O site, O is bonded in a linear geometry to two W atoms. In the twenty-fifth O site, O is bonded in a distorted trigonal non-coplanar geometry to three W atoms. In the twenty-sixth O site, O is bonded in a linear geometry to two equivalent W atoms. In the twenty-seventh O site, O is bonded in a linear geometry to two W atoms. In the twenty-eighth O site, O is bonded in a distorted T-shaped geometry to three W atoms. In the twenty-ninth O site, O is bonded in a linear geometry to two W atoms. In the thirtieth O site, O is bonded in a linear geometry to two equivalent W atoms. In the thirty-first O site, O is bonded in a linear geometry to two equivalent W atoms. In the thirty-second O site, O is bonded in a linear geometry to two equivalent W atoms. In the thirty-third O site, O is bonded in a linear geometry to two W atoms. In the thirty-fourth O site, O is bonded in a linear geometry to two W atoms. In the thirty-fifth O site, O is bonded in a linear geometry to two W atoms. In the thirty-sixth O site, O is bonded in a linear geometry to two equivalent W atoms. In the thirty-seventh O site, O is bonded in a linear geometry to two equivalent W atoms.