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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Cu3(CO4)2 by Materials Project

Cu3(CO4)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent Cu+2.67+ sites. In the first Cu+2.67+ site, Cu+2.67+ is bonded in a square co-planar geometry to four O2- atoms. There is two shorter (1.88 Å) and two longer (1.92 Å) Cu–O bond length. In the second Cu+2.67+ site, Cu+2.67+ is bonded to five O2- atoms to form distorted edge-sharing CuO5 square pyramids. There are a spread of Cu–O bond distances ranging from 1.87–2.52 Å. C4+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.29 Å) and two longer (1.30 Å) C–O bond length. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal non-coplanar geometry to three Cu+2.67+ atoms. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to one Cu+2.67+ and one C4+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Cu+2.67+ and one C4+ atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one Cu+2.67+ and one C4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on BaSmCoCuO6 by Materials Project

BaSmCoCuO6 is (Cubic) Perovskite-derived structured and crystallizes in the tetragonal P4mm space group. The structure is three-dimensional. Ba2+ is bonded to twelve O2- atoms to form BaO12 cuboctahedra that share corners with four equivalent BaO12 cuboctahedra, corners with eight equivalent SmO12 cuboctahedra, faces with two equivalent SmO12 cuboctahedra, faces with four equivalent BaO12 cuboctahedra, faces with four equivalent CoO6 octahedra, and faces with four equivalent CuO6 octahedra. There are a spread of Ba–O bond distances ranging from 2.78–2.93 Å. Sm3+ is bonded to twelve O2- atoms to form SmO12 cuboctahedra that share corners with four equivalent SmO12 cuboctahedra, corners with eight equivalent BaO12 cuboctahedra, faces with two equivalent BaO12 cuboctahedra, faces with four equivalent SmO12 cuboctahedra, faces with four equivalent CoO6 octahedra, and faces with four equivalent CuO6 octahedra. There are a spread of Sm–O bond distances ranging from 2.59–2.78 Å. Co4+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with two equivalent CuO6 octahedra, corners with four equivalent CoO6 octahedra, faces with four equivalent BaO12 cuboctahedra, and faces with four equivalent SmO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–11°. There is two shorter (1.85 Å) and four longer (1.98 Å) Co–O bond length. Cu3+ is bonded to six O2- atoms to form CuO6 octahedra that share corners with two equivalent CoO6 octahedra, corners with four equivalent CuO6 octahedra, faces with four equivalent BaO12 cuboctahedra, and faces with four equivalent SmO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–13°. There are a spread of Cu–O bond distances ranging from 1.95–2.08 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 6-coordinate geometry to two equivalent Ba2+, two equivalent Sm3+, and two equivalent Cu3+ atoms. In the second O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Ba2+, two equivalent Sm3+, and two equivalent Co4+ atoms. In the third O2- site, O2- is bonded to four equivalent Ba2+, one Co4+, and one Cu3+ atom to form a mixture of distorted edge and corner-sharing OBa4CoCu octahedra. The corner-sharing octahedral tilt angles are 5°. In the fourth O2- site, O2- is bonded in a distorted linear geometry to four equivalent Sm3+, one Co4+, and one Cu3+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CaCo2(CuO4)2 by Materials Project

CaCo2(CuO4)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Ca2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Ca–O bond distances ranging from 2.29–2.45 Å. There are two inequivalent Co4+ sites. In the first Co4+ site, Co4+ is bonded to four O2- atoms to form CoO4 tetrahedra that share corners with two equivalent CuO5 trigonal bipyramids. There are a spread of Co–O bond distances ranging from 1.69–1.79 Å. In the second Co4+ site, Co4+ is bonded to four O2- atoms to form CoO4 tetrahedra that share corners with three equivalent CuO5 trigonal bipyramids. There are a spread of Co–O bond distances ranging from 1.78–1.86 Å. There are two inequivalent Cu3+ sites. In the first Cu3+ site, Cu3+ is bonded to five O2- atoms to form CuO5 trigonal bipyramids that share corners with five CoO4 tetrahedra. There are a spread of Cu–O bond distances ranging from 1.92–2.10 Å. In the second Cu3+ site, Cu3+ is bonded in a rectangular see-saw-like geometry to four O2- atoms. There are a spread of Cu–O bond distances ranging from 1.88–1.91 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to one Ca2+, one Co4+, and one Cu3+ atom. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to one Ca2+, one Co4+, and one Cu3+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to one Ca2+, one Co4+, and one Cu3+ atom. In the fourth O2- site, O2- is bonded in a bent 150 degrees geometry to one Co4+ and one Cu3+ atom. In the fifth O2- site, O2- is bonded to two equivalent Ca2+, one Co4+, and one Cu3+ atom to form distorted edge-sharing OCa2CoCu tetrahedra. In the sixth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Ca2+, one Co4+, and one Cu3+ atom. In the seventh O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Co4+ and one Cu3+ atom. In the eighth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Co4+ and two Cu3+ atoms.

36 MATERIALS SCIENCE↗