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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Ca2Cu by Materials Project

Ca2Cu crystallizes in the orthorhombic Pnma space group. The structure is two-dimensional and consists of two Ca2Cu sheets oriented in the (0, 0, 1) direction. there are two inequivalent Ca sites. In the first Ca site, Ca is bonded in a 3-coordinate geometry to three equivalent Cu atoms. There are two shorter (3.00 Å) and one longer (3.02 Å) Ca–Cu bond lengths. In the second Ca site, Ca is bonded in a 4-coordinate geometry to four equivalent Cu atoms. There are a spread of Ca–Cu bond distances ranging from 3.03–3.33 Å. Cu is bonded in a 9-coordinate geometry to seven Ca and two equivalent Cu atoms. Both Cu–Cu bond lengths are 2.52 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ca2Cu(SCl)2 by Materials Project

Ca2Cu(SCl)2 crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Ca2+ is bonded to four S2- and two equivalent Cl1- atoms to form CaS4Cl2 octahedra that share corners with six equivalent CaS4Cl2 octahedra, edges with four equivalent CaS4Cl2 octahedra, and edges with four equivalent CuS2Cl4 octahedra. The corner-sharing octahedral tilt angles are 0°. All Ca–S bond lengths are 2.80 Å. Both Ca–Cl bond lengths are 2.65 Å. Cu2+ is bonded to two equivalent S2- and four equivalent Cl1- atoms to form CuS2Cl4 octahedra that share corners with six equivalent CuS2Cl4 octahedra and edges with eight equivalent CaS4Cl2 octahedra. The corner-sharing octahedral tilt angles are 0°. Both Cu–S bond lengths are 2.65 Å. All Cu–Cl bond lengths are 2.80 Å. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a square co-planar geometry to four equivalent Ca2+ atoms. In the second S2- site, S2- is bonded to four equivalent Ca2+ and two equivalent Cu2+ atoms to form corner-sharing SCa4Cu2 octahedra. The corner-sharing octahedral tilt angles are 0°. Cl1- is bonded in a square co-planar geometry to two equivalent Ca2+ and two equivalent Cu2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ca2Cu(SO)2 by Materials Project

Ca2Cu(SO)2 crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Ca2+ is bonded in a 8-coordinate geometry to four equivalent S+1.50- and four equivalent O2- atoms. All Ca–S bond lengths are 2.98 Å. All Ca–O bond lengths are 2.52 Å. Cu3+ is bonded in a square co-planar geometry to two equivalent S+1.50- and four equivalent O2- atoms. Both Cu–S bond lengths are 2.80 Å. All Cu–O bond lengths are 1.93 Å. S+1.50- is bonded in a 6-coordinate geometry to four equivalent Ca2+, one Cu3+, and one S+1.50- atom. The S–S bond length is 2.14 Å. O2- is bonded to four equivalent Ca2+ and two equivalent Cu3+ atoms to form a mixture of edge, corner, and face-sharing OCa4Cu2 octahedra. The corner-sharing octahedral tilt angles are 0°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ca2Cu(CO)2 by Materials Project

Ca2Cu(CO)2 crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Ca2+ is bonded in a 8-coordinate geometry to four equivalent C1- and four equivalent O2- atoms. All Ca–C bond lengths are 2.97 Å. All Ca–O bond lengths are 2.45 Å. Cu2+ is bonded in a square co-planar geometry to four equivalent O2- atoms. All Cu–O bond lengths are 1.90 Å. C1- is bonded in a 6-coordinate geometry to four equivalent Ca2+ and one C1- atom. The C–C bond length is 1.26 Å. O2- is bonded to four equivalent Ca2+ and two equivalent Cu2+ atoms to form a mixture of corner, edge, and face-sharing OCa4Cu2 octahedra. The corner-sharing octahedral tilt angles are 0°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ca2Cu(ClO)2 by Materials Project

Ca2CuO2Cl2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ca2+ is bonded in a 9-coordinate geometry to four equivalent O2- and five equivalent Cl1- atoms. All Ca–O bond lengths are 2.51 Å. There are four shorter (3.00 Å) and one longer (3.27 Å) Ca–Cl bond lengths. Cu2+ is bonded in a distorted square co-planar geometry to four equivalent O2- and two equivalent Cl1- atoms. All Cu–O bond lengths are 1.94 Å. Both Cu–Cl bond lengths are 2.79 Å. O2- is bonded to four equivalent Ca2+ and two equivalent Cu2+ atoms to form a mixture of corner, edge, and face-sharing OCa4Cu2 octahedra. The corner-sharing octahedral tilt angles are 0°. Cl1- is bonded in a 6-coordinate geometry to five equivalent Ca2+ and one Cu2+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ca2Cu(BrO)2 by Materials Project

Ca2CuBr2O2 crystallizes in the tetragonal I4/mmm space group. The structure is two-dimensional and consists of two Ca2CuBr2O2 sheets oriented in the (0, 0, 1) direction. Ca2+ is bonded in a 8-coordinate geometry to four equivalent O2- and four equivalent Br1- atoms. All Ca–O bond lengths are 2.50 Å. All Ca–Br bond lengths are 3.10 Å. Cu2+ is bonded in a square co-planar geometry to four equivalent O2- and two equivalent Br1- atoms. All Cu–O bond lengths are 1.94 Å. Both Cu–Br bond lengths are 3.01 Å. O2- is bonded to four equivalent Ca2+ and two equivalent Cu2+ atoms to form a mixture of edge, face, and corner-sharing OCa4Cu2 octahedra. The corner-sharing octahedral tilt angles are 0°. Br1- is bonded in a 5-coordinate geometry to four equivalent Ca2+ and one Cu2+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ca2CuH6(CO2)6 by Materials Project

Ca2Cu(HCOO)6 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Ca2+ is bonded to seven O2- atoms to form distorted CaO7 pentagonal bipyramids that share a cornercorner with one CuO6 octahedra and edges with two equivalent CaO7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 42°. There are a spread of Ca–O bond distances ranging from 2.30–2.65 Å. Cu2+ is bonded to six O2- atoms to form distorted CuO6 octahedra that share corners with two equivalent CaO7 pentagonal bipyramids and edges with two equivalent CuO6 octahedra. There are four shorter (2.01 Å) and two longer (2.56 Å) Cu–O bond lengths. There are three inequivalent C2+ sites. In the first C2+ site, C2+ is bonded in a trigonal planar geometry to one H1+ and two O2- atoms. The C–H bond length is 1.11 Å. There is one shorter (1.25 Å) and one longer (1.29 Å) C–O bond length. In the second C2+ site, C2+ is bonded in a trigonal planar geometry to one H1+ and two O2- atoms. The C–H bond length is 1.11 Å. There is one shorter (1.26 Å) and one longer (1.28 Å) C–O bond length. In the third C2+ site, C2+ is bonded in a trigonal planar geometry to one H1+ and two O2- atoms. The C–H bond length is 1.11 Å. There is one shorter (1.26 Å) and one longer (1.28 Å) C–O bond length. There are three inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one C2+ atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one C2+ atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one C2+ atom. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Ca2+ and one C2+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to one Ca2+, one Cu2+, and one C2+ atom. In the third O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Ca2+ and one C2+ atom. In the fourth O2- site, O2- is bonded in a distorted linear geometry to one Ca2+ and one C2+ atom. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Ca2+ and one C2+ atom. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Cu2+ and one C2+ atom.

36 MATERIALS SCIENCE↗