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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Cu2As2O7 by Materials Project

Cu2As2O7 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. Cu2+ is bonded in a 4-coordinate geometry to four O2- atoms. There is two shorter (1.92 Å) and two longer (2.00 Å) Cu–O bond length. As5+ is bonded to four O2- atoms to form corner-sharing AsO4 tetrahedra. There are a spread of As–O bond distances ranging from 1.70–1.75 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Cu2+ and one As5+ atom. In the second O2- site, O2- is bonded in a linear geometry to two equivalent As5+ atoms. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Cu2+ and one As5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cu3(AsO4)2 by Materials Project

Cu3(AsO4)2 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are two inequivalent Cu2+ sites. In the first Cu2+ site, Cu2+ is bonded in a square co-planar geometry to four O2- atoms. There is two shorter (1.92 Å) and two longer (1.98 Å) Cu–O bond length. In the second Cu2+ site, Cu2+ is bonded to five O2- atoms to form distorted CuO5 trigonal bipyramids that share corners with five equivalent AsO4 tetrahedra and an edgeedge with one CuO5 trigonal bipyramid. There are a spread of Cu–O bond distances ranging from 1.94–2.50 Å. As5+ is bonded to four O2- atoms to form AsO4 tetrahedra that share corners with five equivalent CuO5 trigonal bipyramids. There are a spread of As–O bond distances ranging from 1.70–1.77 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Cu2+ and one As5+ atom. In the second O2- site, O2- is bonded in a trigonal planar geometry to two Cu2+ and one As5+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to two Cu2+ and one As5+ atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one Cu2+ and one As5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cu(AsO2)2 by Materials Project

CuAs2O4 crystallizes in the tetragonal P4_2/mbc space group. The structure is three-dimensional. Cu1+ is bonded to six O2- atoms to form distorted edge-sharing CuO6 octahedra. There are four shorter (1.96 Å) and two longer (2.61 Å) Cu–O bond lengths. As+3.50+ is bonded in a distorted T-shaped geometry to three O2- atoms. There is one shorter (1.81 Å) and two longer (1.85 Å) As–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to one Cu1+ and two equivalent As+3.50+ atoms. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Cu1+ and one As+3.50+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cu3(AsO4)2 by Materials Project

Cu3(AsO4)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are three inequivalent Cu2+ sites. In the first Cu2+ site, Cu2+ is bonded to five O2- atoms to form CuO5 trigonal bipyramids that share corners with five AsO4 tetrahedra, a cornercorner with one CuO5 trigonal bipyramid, and an edgeedge with one CuO5 trigonal bipyramid. There are a spread of Cu–O bond distances ranging from 1.92–2.18 Å. In the second Cu2+ site, Cu2+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Cu–O bond distances ranging from 1.92–2.42 Å. In the third Cu2+ site, Cu2+ is bonded to five O2- atoms to form distorted CuO5 trigonal bipyramids that share corners with five AsO4 tetrahedra, a cornercorner with one CuO5 trigonal bipyramid, and an edgeedge with one CuO5 trigonal bipyramid. There are a spread of Cu–O bond distances ranging from 1.94–2.20 Å. There are two inequivalent As5+ sites. In the first As5+ site, As5+ is bonded to four O2- atoms to form AsO4 tetrahedra that share corners with five CuO5 trigonal bipyramids. There are a spread of As–O bond distances ranging from 1.71–1.75 Å. In the second As5+ site, As5+ is bonded to four O2- atoms to form AsO4 tetrahedra that share corners with five CuO5 trigonal bipyramids. There are a spread of As–O bond distances ranging from 1.72–1.76 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to two Cu2+ and one As5+ atom. In the second O2- site, O2- is bonded in a trigonal planar geometry to two Cu2+ and one As5+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Cu2+ and one As5+ atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one Cu2+ and one As5+ atom. In the fifth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Cu2+ and one As5+ atom. In the sixth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Cu2+ and one As5+ atom. In the seventh O2- site, O2- is bonded in a distorted trigonal planar geometry to two Cu2+ and one As5+ atom. In the eighth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Cu2+ and one As5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cu2As2O7 by Materials Project

Cu2As2O7 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Cu2+ is bonded to five O2- atoms to form distorted CuO5 trigonal bipyramids that share corners with five equivalent AsO4 tetrahedra and edges with two equivalent CuO5 trigonal bipyramids. There are a spread of Cu–O bond distances ranging from 1.92–2.37 Å. As5+ is bonded to four O2- atoms to form AsO4 tetrahedra that share a cornercorner with one AsO4 tetrahedra and corners with five equivalent CuO5 trigonal bipyramids. There are a spread of As–O bond distances ranging from 1.69–1.78 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal planar geometry to two equivalent Cu2+ and one As5+ atom. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to one Cu2+ and one As5+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Cu2+ and one As5+ atom. In the fourth O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent As5+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cu3(AsO4)2 by Materials Project

Cu3(AsO4)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent Cu2+ sites. In the first Cu2+ site, Cu2+ is bonded to five O2- atoms to form distorted CuO5 trigonal bipyramids that share corners with five equivalent AsO4 tetrahedra and corners with two equivalent CuO5 trigonal bipyramids. There are a spread of Cu–O bond distances ranging from 1.96–2.30 Å. In the second Cu2+ site, Cu2+ is bonded in a square co-planar geometry to four O2- atoms. There is two shorter (1.94 Å) and two longer (1.98 Å) Cu–O bond length. As5+ is bonded to four O2- atoms to form AsO4 tetrahedra that share corners with five equivalent CuO5 trigonal bipyramids. There are a spread of As–O bond distances ranging from 1.71–1.77 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal planar geometry to two Cu2+ and one As5+ atom. In the second O2- site, O2- is bonded in a trigonal planar geometry to two equivalent Cu2+ and one As5+ atom. In the third O2- site, O2- is bonded in a trigonal planar geometry to two Cu2+ and one As5+ atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one Cu2+ and one As5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cu4As2O9 by Materials Project

Cu4As2O9 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are four inequivalent Cu2+ sites. In the first Cu2+ site, Cu2+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Cu–O bond distances ranging from 1.94–2.34 Å. In the second Cu2+ site, Cu2+ is bonded to six O2- atoms to form distorted CuO6 octahedra that share corners with five AsO4 tetrahedra, an edgeedge with one CuO6 octahedra, and an edgeedge with one CuO5 trigonal bipyramid. There are a spread of Cu–O bond distances ranging from 1.95–2.55 Å. In the third Cu2+ site, Cu2+ is bonded in a distorted rectangular see-saw-like geometry to four O2- atoms. There are a spread of Cu–O bond distances ranging from 1.94–1.96 Å. In the fourth Cu2+ site, Cu2+ is bonded to five O2- atoms to form distorted CuO5 trigonal bipyramids that share corners with four AsO4 tetrahedra and an edgeedge with one CuO6 octahedra. There are a spread of Cu–O bond distances ranging from 1.94–2.46 Å. There are two inequivalent As5+ sites. In the first As5+ site, As5+ is bonded to four O2- atoms to form AsO4 tetrahedra that share corners with two equivalent CuO6 octahedra and corners with two equivalent CuO5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 57°. There are a spread of As–O bond distances ranging from 1.71–1.75 Å. In the second As5+ site, As5+ is bonded to four O2- atoms to form AsO4 tetrahedra that share corners with three equivalent CuO6 octahedra and corners with two equivalent CuO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 45–61°. There are a spread of As–O bond distances ranging from 1.71–1.78 Å. There are nine inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to two Cu2+ and one As5+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to two Cu2+ and one As5+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to two Cu2+ and one As5+ atom. In the fourth O2- site, O2- is bonded in a trigonal non-coplanar geometry to two Cu2+ and one As5+ atom. In the fifth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Cu2+ and one As5+ atom. In the sixth O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Cu2+ and one As5+ atom. In the seventh O2- site, O2- is bonded in a tetrahedral geometry to four Cu2+ atoms. In the eighth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Cu2+ and one As5+ atom. In the ninth O2- site, O2- is bonded in a 3-coordinate geometry to two Cu2+ and one As5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CuAsO3 by Materials Project

CuAsO3 is Ilmenite structured and crystallizes in the triclinic P-1 space group. The structure is three-dimensional. Cu1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Cu–O bond distances ranging from 2.07–2.53 Å. As5+ is bonded to six O2- atoms to form edge-sharing AsO6 octahedra. There are a spread of As–O bond distances ranging from 1.89–1.92 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Cu1+ and two equivalent As5+ atoms. In the second O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Cu1+ and two equivalent As5+ atoms. In the third O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Cu1+ and two equivalent As5+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CuAsO3 by Materials Project

CuAsO3 crystallizes in the orthorhombic Pmma space group. The structure is two-dimensional and consists of one CuAsO3 sheet oriented in the (0, 1, 0) direction. Cu1+ is bonded in a distorted square co-planar geometry to four equivalent O2- atoms. All Cu–O bond lengths are 2.02 Å. As5+ is bonded to four O2- atoms to form corner-sharing AsO4 tetrahedra. There is two shorter (1.76 Å) and two longer (1.84 Å) As–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to two equivalent As5+ atoms. In the second O2- site, O2- is bonded in a trigonal planar geometry to two equivalent Cu1+ and one As5+ atom.

36 MATERIALS SCIENCE↗