Materials Data on K4Na4MoW7O24 by Materials Project

Abstract

K4Na4W7MoO24 is (Cubic) Perovskite-derived structured and crystallizes in the tetragonal P4mm space group. The structure is three-dimensional. K1+ is bonded to twelve O2- atoms to form KO12 cuboctahedra that share corners with four equivalent KO12 cuboctahedra, corners with eight equivalent NaO12 cuboctahedra, faces with two equivalent NaO12 cuboctahedra, faces with four equivalent KO12 cuboctahedra, a faceface with one MoO6 octahedra, and faces with seven WO6 octahedra. There are a spread of K–O bond distances ranging from 2.82–2.88 Å. Na1+ is bonded to twelve O2- atoms to form NaO12 cuboctahedra that share corners with four equivalent NaO12 cuboctahedra, corners with eight equivalent KO12 cuboctahedra, faces with two equivalent KO12 cuboctahedra, faces with four equivalent NaO12 cuboctahedra, a faceface with one MoO6 octahedra, and faces with seven WO6 octahedra. There are a spread of Na–O bond distances ranging from 2.79–2.87 Å. There are five inequivalent W+4.86+ sites. In the first W+4.86+ site, W+4.86+ is bonded to six O2- atoms to form WO6 octahedra that share corners with six WO6 octahedra, faces with four equivalent KO12 cuboctahedra, and faces with four equivalent NaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of W–O bond distances ranging from 2.05–2.11 Å. In the second W+4.86+ site, W+4.86+ is bonded to six O2- atoms to form WO6 octahedra that share corners with six WO6 octahedra, faces with four equivalent KO12 cuboctahedra, and faces with four equivalent NaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of W–O bond distances ranging from 1.91–2.06 Å. In the third W+4.86+ site, W+4.86+ is bonded to six O2- atoms to form WO6 octahedra that share corners with six WO6 octahedra, faces with four equivalent KO12 cuboctahedra, and faces with four equivalent NaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of W–O bond distances ranging from 1.97–2.05 Å. In the fourth W+4.86+ site, W+4.86+ is bonded to six O2- atoms to form WO6 octahedra that share corners with two equivalent MoO6 octahedra, corners with four WO6 octahedra, faces with four equivalent KO12 cuboctahedra, and faces with four equivalent NaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of W–O bond distances ranging from 1.92–1.99 Å. In the fifth W+4.86+ site, W+4.86+ is bonded to six O2- atoms to form WO6 octahedra that share corners with two equivalent MoO6 octahedra, corners with four equivalent WO6 octahedra, faces with four equivalent KO12 cuboctahedra, and faces with four equivalent NaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of W–O bond distances ranging from 1.92–2.04 Å. Mo6+ is bonded to six O2- atoms to form MoO6 octahedra that share corners with six WO6 octahedra, faces with four equivalent KO12 cuboctahedra, and faces with four equivalent NaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are one shorter (2.06 Å) and five longer (2.10 Å) Mo–O bond lengths. There are ten inequivalent O2- sites. In the first O2- site, O2- is bonded to four equivalent K1+ and two W+4.86+ atoms to form distorted OK4W2 octahedra that share corners with twenty OK2Na2W2 octahedra, edges with four equivalent OK4W2 octahedra, and faces with eight OK2Na2W2 octahedra. The corner-sharing octahedra tilt angles range from 0–63°. In the second O2- site, O2- is bonded in a distorted linear geometry to four equivalent Na1+ and two W+4.86+ atoms. In the third O2- site, O2- is bonded to four equivalent K1+ and two W+4.86+ atoms to form distorted OK4W2 octahedra that share corners with twenty OK4W2 octahedra, edges with four OK4W2 octahedra, and faces with eight OK2Na2W2 octahedra. The corner-sharing octahedra tilt angles range from 1–60°. In the fourth O2- site, O2- is bonded in a distorted linear geometry to four equivalent Na1+ and two W+4.86+ atoms. In the fifth O2- site, O2- is bonded to four equivalent K1+, one W+4.86+, and one Mo6+ atom to form distorted OK4MoW octahedra that share corners with twenty-two OK4W2 octahedra, edges with four equivalent OK4W2 octahedra, and faces with eight OK2Na2W2 octahedra. The corner-sharing octahedra tilt angles range from 0–62°. In the sixth O2- site, O2- is bonded to four equivalent Na1+, one W+4.86+, and one Mo6+ atom to form a mixture of distorted face and corner-sharing ONa4MoW octahedra. The corner-sharing octahedra tilt angles range from 0–61°. In the seventh O2- site, O2- is bonded to two equivalent K1+, two equivalent Na1+, and two W+4.86+ atoms to form distorted OK2Na2W2 octahedra that share corners with twenty OK4W2 octahedra, edges with four OK2Na2W2 octahedra, and faces with six OK4W2 octahedra. The corner-sharing octahedra tilt angles range from 1–63°. In the eighth O2- site, O2- is bonded to two equivalent K1+, two equivalent Na1+, and two W+4.86+ atoms to form distorted OK2Na2W2 octahedra that share corners with twenty OK4W2 octahedra, edges with four OK2Na2W2 octahedra, and faces with six OK4W2 octahedra. The corner-sharing octahedra tilt angles range from 1–62°. In the ninth O2- site, O2- is bonded to two equivalent K1+, two equivalent Na1+, and two W+4.86+ atoms to form distorted OK2Na2W2 octahedra that share corners with eighteen OK4W2 octahedra, edges with four OK2Na2W2 octahedra, and faces with seven OK4W2 octahedra. The corner-sharing octahedra tilt angles range from 1–62°. In the tenth O2- site, O2- is bonded to two equivalent K1+, two equivalent Na1+, one W+4.86+, and one Mo6+ atom to form distorted OK2Na2MoW octahedra that share corners with eighteen OK4W2 octahedra, edges with four OK2Na2W2 octahedra, and faces with seven OK4W2 octahedra. The corner-sharing octahedra tilt angles range from 1–63°.