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DOE OSTI2020

Materials Data on Fe7Se8 by Materials Project

Fe7Se8 crystallizes in the trigonal P3_121 space group. The structure is three-dimensional. there are five inequivalent Fe+2.29+ sites. In the first Fe+2.29+ site, Fe+2.29+ is bonded to six Se2- atoms to form a mixture of corner, edge, and face-sharing FeSe6 octahedra. The corner-sharing octahedra tilt angles range from 48–54°. There are a spread of Fe–Se bond distances ranging from 2.49–2.60 Å. In the second Fe+2.29+ site, Fe+2.29+ is bonded to six Se2- atoms to form a mixture of corner, edge, and face-sharing FeSe6 octahedra. The corner-sharing octahedra tilt angles range from 47–58°. There are a spread of Fe–Se bond distances ranging from 2.43–2.58 Å. In the third Fe+2.29+ site, Fe+2.29+ is bonded to six Se2- atoms to form a mixture of corner, edge, and face-sharing FeSe6 octahedra. The corner-sharing octahedra tilt angles range from 51–58°. There are a spread of Fe–Se bond distances ranging from 2.44–2.61 Å. In the fourth Fe+2.29+ site, Fe+2.29+ is bonded to six Se2- atoms to form a mixture of corner, edge, and face-sharing FeSe6 octahedra. The corner-sharing octahedra tilt angles range from 51–56°. There are a spread of Fe–Se bond distances ranging from 2.36–2.54 Å. In the fifth Fe+2.29+ site, Fe+2.29+ is bonded to six Se2- atoms to form a mixture of corner, edge, and face-sharing FeSe6 octahedra. The corner-sharing octahedra tilt angles range from 47–53°. There are a spread of Fe–Se bond distances ranging from 2.42–2.54 Å. There are four inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 5-coordinate geometry to five Fe+2.29+ atoms. In the second Se2- site, Se2- is bonded in a 5-coordinate geometry to five Fe+2.29+ atoms. In the third Se2- site, Se2- is bonded in a 6-coordinate geometry to six Fe+2.29+ atoms. In the fourth Se2- site, Se2- is bonded in a 5-coordinate geometry to five Fe+2.29+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ti(TlSe)4 by Materials Project

Ti(TlSe)4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Ti4+ is bonded in a tetrahedral geometry to four Se2- atoms. There are a spread of Ti–Se bond distances ranging from 2.40–2.42 Å. There are four inequivalent Tl1+ sites. In the first Tl1+ site, Tl1+ is bonded in a 6-coordinate geometry to six Se2- atoms. There are a spread of Tl–Se bond distances ranging from 3.10–3.93 Å. In the second Tl1+ site, Tl1+ is bonded in a 5-coordinate geometry to five Se2- atoms. There are a spread of Tl–Se bond distances ranging from 3.13–3.91 Å. In the third Tl1+ site, Tl1+ is bonded in a 5-coordinate geometry to five Se2- atoms. There are a spread of Tl–Se bond distances ranging from 3.07–3.83 Å. In the fourth Tl1+ site, Tl1+ is bonded in a 4-coordinate geometry to four Se2- atoms. There are a spread of Tl–Se bond distances ranging from 3.10–3.58 Å. There are four inequivalent Se2- sites. In the first Se2- site, Se2- is bonded to one Ti4+ and four Tl1+ atoms to form distorted corner-sharing SeTiTl4 trigonal bipyramids. In the second Se2- site, Se2- is bonded in a 1-coordinate geometry to one Ti4+ and four Tl1+ atoms. In the third Se2- site, Se2- is bonded in a 1-coordinate geometry to one Ti4+ and six Tl1+ atoms. In the fourth Se2- site, Se2- is bonded in a 1-coordinate geometry to one Ti4+ and six Tl1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2LaP2Se7 by Materials Project

K2LaP2Se7 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 10-coordinate geometry to six Se2- atoms. There are a spread of K–Se bond distances ranging from 3.36–3.72 Å. In the second K1+ site, K1+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of K–Se bond distances ranging from 3.34–3.81 Å. La2+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of La–Se bond distances ranging from 3.06–3.26 Å. There are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded in a tetrahedral geometry to four Se2- atoms. There are a spread of P–Se bond distances ranging from 2.22–2.25 Å. In the second P5+ site, P5+ is bonded in a trigonal non-coplanar geometry to three Se2- atoms. There are one shorter (2.20 Å) and two longer (2.21 Å) P–Se bond lengths. There are seven inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a distorted see-saw-like geometry to two equivalent K1+, one La2+, and one P5+ atom. In the second Se2- site, Se2- is bonded in a 3-coordinate geometry to two K1+, one La2+, and one P5+ atom. In the third Se2- site, Se2- is bonded in a 1-coordinate geometry to three K1+, one La2+, and one P5+ atom. In the fourth Se2- site, Se2- is bonded in a 4-coordinate geometry to two K1+, one La2+, and one P5+ atom. In the fifth Se2- site, Se2- is bonded in a 1-coordinate geometry to two K1+, one La2+, and one P5+ atom. In the sixth Se2- site, Se2- is bonded in a 4-coordinate geometry to two K1+, one La2+, and one P5+ atom. In the seventh Se2- site, Se2- is bonded in a 4-coordinate geometry to one K1+, two equivalent La2+, and one P5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Yb3Se4 by Materials Project

Yb3Se4 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are three inequivalent Yb+2.67+ sites. In the first Yb+2.67+ site, Yb+2.67+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of Yb–Se bond distances ranging from 2.90–3.22 Å. In the second Yb+2.67+ site, Yb+2.67+ is bonded to six Se2- atoms to form a mixture of corner and edge-sharing YbSe6 octahedra. The corner-sharing octahedra tilt angles range from 48–84°. There are a spread of Yb–Se bond distances ranging from 2.85–3.08 Å. In the third Yb+2.67+ site, Yb+2.67+ is bonded to six Se2- atoms to form a mixture of corner and edge-sharing YbSe6 octahedra. The corner-sharing octahedra tilt angles range from 48–84°. There are a spread of Yb–Se bond distances ranging from 2.86–3.00 Å. There are four inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 5-coordinate geometry to five Yb+2.67+ and one Se2- atom. The Se–Se bond length is 2.65 Å. In the second Se2- site, Se2- is bonded in a 6-coordinate geometry to five Yb+2.67+ and one Se2- atom. In the third Se2- site, Se2- is bonded to five Yb+2.67+ atoms to form a mixture of distorted corner and edge-sharing SeYb5 trigonal bipyramids. In the fourth Se2- site, Se2- is bonded to five Yb+2.67+ atoms to form a mixture of corner and edge-sharing SeYb5 trigonal bipyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Rb2Mo9Se10 by Materials Project

Rb2Mo9Se10 crystallizes in the trigonal R-3 space group. The structure is three-dimensional. there are two inequivalent Rb1+ sites. In the first Rb1+ site, Rb1+ is bonded in a 10-coordinate geometry to ten Se2- atoms. There are a spread of Rb–Se bond distances ranging from 3.65–4.02 Å. In the second Rb1+ site, Rb1+ is bonded in a 9-coordinate geometry to nine Se2- atoms. There are a spread of Rb–Se bond distances ranging from 3.61–3.89 Å. There are three inequivalent Mo2+ sites. In the first Mo2+ site, Mo2+ is bonded to five Se2- atoms to form a mixture of edge and corner-sharing MoSe5 square pyramids. There are a spread of Mo–Se bond distances ranging from 2.54–2.71 Å. In the second Mo2+ site, Mo2+ is bonded in a see-saw-like geometry to four Se2- atoms. There are a spread of Mo–Se bond distances ranging from 2.60–2.72 Å. In the third Mo2+ site, Mo2+ is bonded in a see-saw-like geometry to four Se2- atoms. There are a spread of Mo–Se bond distances ranging from 2.63–2.72 Å. There are four inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 7-coordinate geometry to one Rb1+ and three equivalent Mo2+ atoms. In the second Se2- site, Se2- is bonded in a 5-coordinate geometry to one Rb1+ and four Mo2+ atoms. In the third Se2- site, Se2- is bonded in a 6-coordinate geometry to two Rb1+ and four Mo2+ atoms. In the fourth Se2- site, Se2- is bonded in a 7-coordinate geometry to three Rb1+ and four Mo2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on BaSbSe2F by Materials Project

BaSbSe2F crystallizes in the triclinic P-1 space group. The structure is two-dimensional and consists of one BaSbSe2F sheet oriented in the (0, 0, 1) direction. there are two inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded in a 4-coordinate geometry to two equivalent Se2- and four F1- atoms. Both Ba–Se bond lengths are 3.40 Å. There are a spread of Ba–F bond distances ranging from 2.71–2.73 Å. In the second Ba2+ site, Ba2+ is bonded in a 4-coordinate geometry to three Se2- and four F1- atoms. There are a spread of Ba–Se bond distances ranging from 3.46–3.79 Å. There are a spread of Ba–F bond distances ranging from 2.71–2.73 Å. There are two inequivalent Sb3+ sites. In the first Sb3+ site, Sb3+ is bonded in a distorted trigonal non-coplanar geometry to three Se2- atoms. There are a spread of Sb–Se bond distances ranging from 2.55–2.69 Å. In the second Sb3+ site, Sb3+ is bonded in a distorted trigonal non-coplanar geometry to three Se2- atoms. There are a spread of Sb–Se bond distances ranging from 2.54–2.68 Å. There are four inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a distorted water-like geometry to two Sb3+ atoms. In the second Se2- site, Se2- is bonded in a 1-coordinate geometry to one Sb3+ atom. In the third Se2- site, Se2- is bonded in a 1-coordinate geometry to four Ba2+, one Sb3+, and four F1- atoms. There are a spread of Se–F bond distances ranging from 3.54–3.63 Å. In the fourth Se2- site, Se2- is bonded in a 2-coordinate geometry to one Ba2+ and two Sb3+ atoms. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded to four Ba2+ and two equivalent Se2- atoms to form a mixture of corner, edge, and face-sharing FBa4Se2 tetrahedra. In the second F1- site, F1- is bonded to four Ba2+ and two equivalent Se2- atoms to form a mixture of corner, edge, and face-sharing FBa4Se2 tetrahedra.

36 MATERIALS SCIENCE↗
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Materials Data on Se2S(NCl)2 by Materials Project

Se2S(NCl)2 crystallizes in the orthorhombic Pbca space group. The structure is two-dimensional and consists of two Se2S(NCl)2 sheets oriented in the (0, 0, 1) direction. there are two inequivalent N4+ sites. In the first N4+ site, N4+ is bonded in a bent 120 degrees geometry to one Se2- and one S2- atom. The N–Se bond length is 1.82 Å. The N–S bond length is 1.58 Å. In the second N4+ site, N4+ is bonded in a bent 120 degrees geometry to one Se2- and one S2- atom. The N–Se bond length is 1.80 Å. The N–S bond length is 1.56 Å. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a single-bond geometry to one N4+ and one Se2- atom. The Se–Se bond length is 2.44 Å. In the second Se2- site, Se2- is bonded in a 6-coordinate geometry to one N4+, one Se2-, and four Cl1- atoms. There are a spread of Se–Cl bond distances ranging from 2.42–3.48 Å. S2- is bonded in a bent 120 degrees geometry to two N4+ atoms. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 2-coordinate geometry to two equivalent Se2- atoms. In the second Cl1- site, Cl1- is bonded in a distorted single-bond geometry to two equivalent Se2- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on AsSe2S(NF3)2 by Materials Project

N2Se2SAsSe2S(NF3)2AsF6 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four AsF6 clusters, four AsSe2S(NF3)2 clusters, and four N2Se2S clusters. In each AsF6 cluster, As2+ is bonded in an octahedral geometry to six F1- atoms. There are a spread of As–F bond distances ranging from 1.76–1.81 Å. There are six inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one As2+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one As2+ atom. In the third F1- site, F1- is bonded in a single-bond geometry to one As2+ atom. In the fourth F1- site, F1- is bonded in a single-bond geometry to one As2+ atom. In the fifth F1- site, F1- is bonded in a single-bond geometry to one As2+ atom. In the sixth F1- site, F1- is bonded in a distorted single-bond geometry to one As2+ atom. In each AsSe2S(NF3)2 cluster, As2+ is bonded in an octahedral geometry to six F1- atoms. There are a spread of As–F bond distances ranging from 1.76–1.83 Å. There are two inequivalent N5+ sites. In the first N5+ site, N5+ is bonded in a bent 120 degrees geometry to one Se2- and one S2- atom. The N–Se bond length is 1.79 Å. The N–S bond length is 1.57 Å. In the second N5+ site, N5+ is bonded in a bent 120 degrees geometry to one Se2- and one S2- atom. The N–Se bond length is 1.79 Å. The N–S bond length is 1.57 Å. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a distorted single-bond geometry to one N5+ atom. In the second Se2- site, Se2- is bonded in a 1-coordinate geometry to one N5+ and one F1- atom. The Se–F bond length is 2.70 Å. S2- is bonded in a distorted bent 120 degrees geometry to two N5+ atoms. There are six inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one As2+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one As2+ atom. In the third F1- site, F1- is bonded in a distorted single-bond geometry to one As2+ and one Se2- atom. In the fourth F1- site, F1- is bonded in a single-bond geometry to one As2+ atom. In the fifth F1- site, F1- is bonded in a single-bond geometry to one As2+ atom. In the sixth F1- site, F1- is bonded in a single-bond geometry to one As2+ atom. In each N2Se2S cluster, there are two inequivalent N5+ sites. In the first N5+ site, N5+ is bonded in a bent 120 degrees geometry to one Se2- and one S2- atom. The N–Se bond length is 1.79 Å. The N–S bond length is 1.57 Å. In the second N5+ site, N5+ is bonded in a bent 120 degrees geometry to one Se2- and one S2- atom. The N–Se bond length is 1.79 Å. The N–S bond length is 1.56 Å. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 1-coordinate geometry to one N5+ atom. In the second Se2- site, Se2- is bonded in a 1-coordinate geometry to one N5+ atom. S2- is bonded in a distorted bent 120 degrees geometry to two N5+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SeS2(NCl)2 by Materials Project

SeS2(NCl)2 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of two SeS2(NCl)2 clusters. there are four inequivalent N4+ sites. In the first N4+ site, N4+ is bonded in a bent 120 degrees geometry to one Se2- and one S2- atom. The N–Se bond length is 1.80 Å. The N–S bond length is 1.58 Å. In the second N4+ site, N4+ is bonded in a bent 120 degrees geometry to two S2- atoms. There is one shorter (1.57 Å) and one longer (1.61 Å) N–S bond length. In the third N4+ site, N4+ is bonded in a bent 120 degrees geometry to one Se2- and one S2- atom. The N–Se bond length is 1.81 Å. The N–S bond length is 1.59 Å. In the fourth N4+ site, N4+ is bonded in a bent 120 degrees geometry to two S2- atoms. There is one shorter (1.57 Å) and one longer (1.61 Å) N–S bond length. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 1-coordinate geometry to one N4+ and three Cl1- atoms. There are a spread of Se–Cl bond distances ranging from 2.48–3.10 Å. In the second Se2- site, Se2- is bonded in a 2-coordinate geometry to one N4+, one S2-, and four Cl1- atoms. The Se–S bond length is 2.33 Å. There are a spread of Se–Cl bond distances ranging from 2.33–3.40 Å. There are four inequivalent S2- sites. In the first S2- site, S2- is bonded in a water-like geometry to two N4+ atoms. In the second S2- site, S2- is bonded in a water-like geometry to two N4+ atoms. In the third S2- site, S2- is bonded in a distorted single-bond geometry to one N4+ and one Cl1- atom. The S–Cl bond length is 3.12 Å. In the fourth S2- site, S2- is bonded in a distorted single-bond geometry to one N4+, one Se2-, and one Cl1- atom. The S–Cl bond length is 3.13 Å. There are four inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 5-coordinate geometry to three Se2- and two S2- atoms. In the second Cl1- site, Cl1- is bonded in a distorted single-bond geometry to two Se2- atoms. In the third Cl1- site, Cl1- is bonded in a single-bond geometry to one Se2- atom. In the fourth Cl1- site, Cl1- is bonded in a distorted single-bond geometry to one Se2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Rb3AgSn3Se8 by Materials Project

Rb3AgSn3Se8 crystallizes in the tetragonal P4/nbm space group. The structure is three-dimensional. there are two inequivalent Rb1+ sites. In the first Rb1+ site, Rb1+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are four shorter (3.51 Å) and four longer (3.72 Å) Rb–Se bond lengths. In the second Rb1+ site, Rb1+ is bonded in a 8-coordinate geometry to eight equivalent Se2- atoms. All Rb–Se bond lengths are 3.72 Å. Ag1+ is bonded to four equivalent Se2- atoms to form distorted AgSe4 tetrahedra that share edges with two equivalent SnSe4 tetrahedra. All Ag–Se bond lengths are 2.83 Å. There are two inequivalent Sn4+ sites. In the first Sn4+ site, Sn4+ is bonded to four Se2- atoms to form SnSe4 tetrahedra that share an edgeedge with one AgSe4 tetrahedra and an edgeedge with one SnSe4 tetrahedra. There are two shorter (2.52 Å) and two longer (2.67 Å) Sn–Se bond lengths. In the second Sn4+ site, Sn4+ is bonded to four equivalent Se2- atoms to form edge-sharing SnSe4 tetrahedra. All Sn–Se bond lengths are 2.58 Å. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 6-coordinate geometry to four Rb1+, one Ag1+, and one Sn4+ atom. In the second Se2- site, Se2- is bonded to two equivalent Rb1+ and two Sn4+ atoms to form a mixture of edge and corner-sharing SeRb2Sn2 trigonal pyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K3AgSn3Se8 by Materials Project

K3AgSn3Se8 crystallizes in the tetragonal P4/nbm space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are four shorter (3.40 Å) and four longer (3.58 Å) K–Se bond lengths. In the second K1+ site, K1+ is bonded in a 8-coordinate geometry to eight equivalent Se2- atoms. All K–Se bond lengths are 3.59 Å. Ag1+ is bonded to four equivalent Se2- atoms to form AgSe4 tetrahedra that share edges with two equivalent SnSe4 tetrahedra. All Ag–Se bond lengths are 2.82 Å. There are two inequivalent Sn4+ sites. In the first Sn4+ site, Sn4+ is bonded to four Se2- atoms to form SnSe4 tetrahedra that share an edgeedge with one AgSe4 tetrahedra and an edgeedge with one SnSe4 tetrahedra. There are two shorter (2.52 Å) and two longer (2.66 Å) Sn–Se bond lengths. In the second Sn4+ site, Sn4+ is bonded to four equivalent Se2- atoms to form edge-sharing SnSe4 tetrahedra. All Sn–Se bond lengths are 2.59 Å. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 6-coordinate geometry to four K1+, one Ag1+, and one Sn4+ atom. In the second Se2- site, Se2- is bonded to two equivalent K1+ and two Sn4+ atoms to form a mixture of edge and corner-sharing SeK2Sn2 trigonal pyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TaPbSe2 by Materials Project

PbTaSe2 crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. Ta is bonded to six equivalent Se atoms to form distorted edge-sharing TaSe6 pentagonal pyramids. All Ta–Se bond lengths are 2.61 Å. Pb is bonded in a distorted linear geometry to two equivalent Se atoms. Both Pb–Se bond lengths are 3.08 Å. Se is bonded in a 4-coordinate geometry to three equivalent Ta and one Pb atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Pd(Se3Br)2 by Materials Project

PdSe6(Br)2 crystallizes in the triclinic P-1 space group. The structure is one-dimensional and consists of two hydrobromic acid molecules and one PdSe6 ribbon oriented in the (0, -1, 1) direction. In the PdSe6 ribbon, Pd2+ is bonded in a linear geometry to two equivalent Se2- atoms. Both Pd–Se bond lengths are 2.44 Å. There are three inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a distorted water-like geometry to two Se2- atoms. There are one shorter (2.35 Å) and one longer (2.43 Å) Se–Se bond lengths. In the second Se2- site, Se2- is bonded in a 1-coordinate geometry to one Pd2+ and two Se2- atoms. The Se–Se bond length is 2.43 Å. In the third Se2- site, Se2- is bonded in a distorted L-shaped geometry to two Se2- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on In5Se5Cl by Materials Project

In5Se5Cl crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. there are five inequivalent In+2.20+ sites. In the first In+2.20+ site, In+2.20+ is bonded in a distorted T-shaped geometry to three Se2- atoms. There are one shorter (2.69 Å) and two longer (2.73 Å) In–Se bond lengths. In the second In+2.20+ site, In+2.20+ is bonded in a 2-coordinate geometry to five Se2- and three equivalent Cl1- atoms. There are a spread of In–Se bond distances ranging from 3.39–3.54 Å. There are two shorter (3.18 Å) and one longer (3.36 Å) In–Cl bond lengths. In the third In+2.20+ site, In+2.20+ is bonded in a distorted T-shaped geometry to three Se2- atoms. There are one shorter (2.67 Å) and two longer (2.72 Å) In–Se bond lengths. In the fourth In+2.20+ site, In+2.20+ is bonded to four Se2- and two equivalent Cl1- atoms to form edge-sharing InSe4Cl2 octahedra. There are a spread of In–Se bond distances ranging from 2.67–2.73 Å. Both In–Cl bond lengths are 2.98 Å. In the fifth In+2.20+ site, In+2.20+ is bonded to six Se2- atoms to form edge-sharing InSe6 octahedra. There are a spread of In–Se bond distances ranging from 2.77–2.85 Å. There are five inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a distorted trigonal non-coplanar geometry to five In+2.20+ atoms. In the second Se2- site, Se2- is bonded in a 4-coordinate geometry to four In+2.20+ atoms. In the third Se2- site, Se2- is bonded in a rectangular see-saw-like geometry to four In+2.20+ atoms. In the fourth Se2- site, Se2- is bonded in a distorted T-shaped geometry to three In+2.20+ atoms. In the fifth Se2- site, Se2- is bonded in a 3-coordinate geometry to five In+2.20+ atoms. Cl1- is bonded in a 4-coordinate geometry to five In+2.20+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2Hg(PSe3)2 by Materials Project

K2Hg(PSe3)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 6-coordinate geometry to six Se2- atoms. There are a spread of K–Se bond distances ranging from 3.42–3.62 Å. In the second K1+ site, K1+ is bonded in a 4-coordinate geometry to four Se2- atoms. There are a spread of K–Se bond distances ranging from 3.40–3.51 Å. Hg2+ is bonded in a tetrahedral geometry to four Se2- atoms. There are a spread of Hg–Se bond distances ranging from 2.66–2.77 Å. There are two inequivalent P4+ sites. In the first P4+ site, P4+ is bonded in a trigonal non-coplanar geometry to three Se2- atoms. There are a spread of P–Se bond distances ranging from 2.17–2.25 Å. In the second P4+ site, P4+ is bonded in a trigonal non-coplanar geometry to three Se2- atoms. There are a spread of P–Se bond distances ranging from 2.16–2.26 Å. There are six inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 4-coordinate geometry to two equivalent K1+, one Hg2+, and one P4+ atom. In the second Se2- site, Se2- is bonded in a 3-coordinate geometry to two equivalent K1+ and one P4+ atom. In the third Se2- site, Se2- is bonded in a 4-coordinate geometry to two equivalent K1+, one Hg2+, and one P4+ atom. In the fourth Se2- site, Se2- is bonded in a 2-coordinate geometry to one K1+, one Hg2+, and one P4+ atom. In the fifth Se2- site, Se2- is bonded in a 3-coordinate geometry to two equivalent K1+ and one P4+ atom. In the sixth Se2- site, Se2- is bonded in a 2-coordinate geometry to one K1+, one Hg2+, and one P4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NaLa(GaSe2)4 by Materials Project

NaLa(GaSe2)4 crystallizes in the orthorhombic Fddd space group. The structure is three-dimensional. Na1+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of Na–Se bond distances ranging from 3.18–3.32 Å. There are two inequivalent La3+ sites. In the first La3+ site, La3+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are four shorter (3.18 Å) and four longer (3.20 Å) La–Se bond lengths. In the second La3+ site, La3+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are four shorter (3.17 Å) and four longer (3.19 Å) La–Se bond lengths. There are two inequivalent Ga3+ sites. In the first Ga3+ site, Ga3+ is bonded to four Se2- atoms to form a mixture of edge and corner-sharing GaSe4 tetrahedra. There are a spread of Ga–Se bond distances ranging from 2.42–2.47 Å. In the second Ga3+ site, Ga3+ is bonded to four Se2- atoms to form a mixture of edge and corner-sharing GaSe4 tetrahedra. There are a spread of Ga–Se bond distances ranging from 2.42–2.47 Å. There are four inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 4-coordinate geometry to one Na1+, one La3+, and two Ga3+ atoms. In the second Se2- site, Se2- is bonded in a 4-coordinate geometry to one Na1+, one La3+, and two equivalent Ga3+ atoms. In the third Se2- site, Se2- is bonded in a 4-coordinate geometry to one Na1+, one La3+, and two equivalent Ga3+ atoms. In the fourth Se2- site, Se2- is bonded to one Na1+, one La3+, and two Ga3+ atoms to form a mixture of distorted edge and corner-sharing SeNaLaGa2 trigonal pyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NaNd(GaSe2)4 by Materials Project

NaNd(GaSe2)4 crystallizes in the orthorhombic Fddd space group. The structure is three-dimensional. Na1+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of Na–Se bond distances ranging from 3.18–3.33 Å. There are two inequivalent Nd3+ sites. In the first Nd3+ site, Nd3+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are four shorter (3.13 Å) and four longer (3.16 Å) Nd–Se bond lengths. In the second Nd3+ site, Nd3+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are four shorter (3.14 Å) and four longer (3.15 Å) Nd–Se bond lengths. There are two inequivalent Ga3+ sites. In the first Ga3+ site, Ga3+ is bonded to four Se2- atoms to form a mixture of edge and corner-sharing GaSe4 tetrahedra. There are one shorter (2.42 Å) and three longer (2.46 Å) Ga–Se bond lengths. In the second Ga3+ site, Ga3+ is bonded to four Se2- atoms to form a mixture of edge and corner-sharing GaSe4 tetrahedra. There are a spread of Ga–Se bond distances ranging from 2.43–2.47 Å. There are four inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 4-coordinate geometry to one Na1+, one Nd3+, and two equivalent Ga3+ atoms. In the second Se2- site, Se2- is bonded in a 4-coordinate geometry to one Na1+, one Nd3+, and two equivalent Ga3+ atoms. In the third Se2- site, Se2- is bonded in a 4-coordinate geometry to one Na1+, one Nd3+, and two Ga3+ atoms. In the fourth Se2- site, Se2- is bonded to one Na1+, one Nd3+, and two Ga3+ atoms to form a mixture of distorted edge and corner-sharing SeNaNdGa2 trigonal pyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cu2Mo3Se4 by Materials Project

Mo3Cu2Se4 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are three inequivalent Mo2+ sites. In the first Mo2+ site, Mo2+ is bonded to five Se2- atoms to form a mixture of edge and corner-sharing MoSe5 square pyramids. There are a spread of Mo–Se bond distances ranging from 2.59–2.67 Å. In the second Mo2+ site, Mo2+ is bonded in a rectangular see-saw-like geometry to four Se2- atoms. There are a spread of Mo–Se bond distances ranging from 2.62–2.65 Å. In the third Mo2+ site, Mo2+ is bonded to five Se2- atoms to form a mixture of edge and corner-sharing MoSe5 square pyramids. There are a spread of Mo–Se bond distances ranging from 2.56–2.67 Å. There are two inequivalent Cu1+ sites. In the first Cu1+ site, Cu1+ is bonded in a 3-coordinate geometry to three Se2- atoms. There are a spread of Cu–Se bond distances ranging from 2.45–2.75 Å. In the second Cu1+ site, Cu1+ is bonded in a distorted T-shaped geometry to three Se2- atoms. There are a spread of Cu–Se bond distances ranging from 2.41–2.69 Å. There are four inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 5-coordinate geometry to four Mo2+ and one Cu1+ atom. In the second Se2- site, Se2- is bonded in a 5-coordinate geometry to three Mo2+ and two equivalent Cu1+ atoms. In the third Se2- site, Se2- is bonded in a 1-coordinate geometry to four Mo2+ and one Cu1+ atom. In the fourth Se2- site, Se2- is bonded in a 5-coordinate geometry to three Mo2+ and two equivalent Cu1+ atoms.

36 MATERIALS SCIENCE↗