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DOE OSTI2020

Materials Data on CdB4O7 by Materials Project

CdB4O7 crystallizes in the orthorhombic Pbca space group. The structure is three-dimensional. Cd2+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Cd–O bond distances ranging from 2.21–2.25 Å. There are four inequivalent B3+ sites. In the first B3+ site, B3+ is bonded to four O2- atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.45–1.51 Å. In the second B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.36–1.39 Å. In the third B3+ site, B3+ is bonded to four O2- atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.45–1.55 Å. In the fourth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.36–1.39 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to one Cd2+ and two B3+ atoms. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to two B3+ atoms. In the third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two B3+ atoms. In the fourth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Cd2+ and two B3+ atoms. In the fifth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Cd2+ and two B3+ atoms. In the sixth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Cd2+ and two B3+ atoms. In the seventh O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two B3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cd4SiS6 by Materials Project

Cd4SiS6 is Chalcostibite-like structured and crystallizes in the monoclinic Cc space group. The structure is three-dimensional. there are four inequivalent Cd2+ sites. In the first Cd2+ site, Cd2+ is bonded in a 4-coordinate geometry to four S2- atoms. There are a spread of Cd–S bond distances ranging from 2.56–2.66 Å. In the second Cd2+ site, Cd2+ is bonded to four S2- atoms to form CdS4 tetrahedra that share corners with two equivalent CdS4 tetrahedra and corners with two equivalent SiS4 tetrahedra. There are a spread of Cd–S bond distances ranging from 2.57–2.61 Å. In the third Cd2+ site, Cd2+ is bonded in a 5-coordinate geometry to five S2- atoms. There are a spread of Cd–S bond distances ranging from 2.57–3.30 Å. In the fourth Cd2+ site, Cd2+ is bonded to four S2- atoms to form CdS4 tetrahedra that share corners with two equivalent CdS4 tetrahedra and corners with two equivalent SiS4 tetrahedra. There are a spread of Cd–S bond distances ranging from 2.56–2.64 Å. Si4+ is bonded to four S2- atoms to form SiS4 tetrahedra that share corners with four CdS4 tetrahedra. There are a spread of Si–S bond distances ranging from 2.12–2.15 Å. There are six inequivalent S2- sites. In the first S2- site, S2- is bonded in a trigonal non-coplanar geometry to two Cd2+ and one Si4+ atom. In the second S2- site, S2- is bonded in a trigonal non-coplanar geometry to two Cd2+ and one Si4+ atom. In the third S2- site, S2- is bonded to four Cd2+ atoms to form corner-sharing SCd4 tetrahedra. In the fourth S2- site, S2- is bonded in a 3-coordinate geometry to three Cd2+ and one Si4+ atom. In the fifth S2- site, S2- is bonded in a 3-coordinate geometry to two Cd2+ and one Si4+ atom. In the sixth S2- site, S2- is bonded to four Cd2+ atoms to form corner-sharing SCd4 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on V2Cd(PO5)2 by Materials Project

V2Cd(PO5)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent V4+ sites. In the first V4+ site, V4+ is bonded to six O2- atoms to form distorted VO6 octahedra that share corners with four PO4 tetrahedra. There are a spread of V–O bond distances ranging from 1.67–2.21 Å. In the second V4+ site, V4+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of V–O bond distances ranging from 1.66–2.37 Å. Cd2+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Cd–O bond distances ranging from 2.24–2.34 Å. There are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent VO6 octahedra. The corner-sharing octahedra tilt angles range from 43–47°. There are a spread of P–O bond distances ranging from 1.54–1.57 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent VO6 octahedra. The corner-sharing octahedra tilt angles range from 36–50°. There is two shorter (1.53 Å) and two longer (1.57 Å) P–O bond length. There are ten inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to one V4+, one Cd2+, and one P5+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to one V4+ and one P5+ atom. In the third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one V4+ and one Cd2+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to two V4+ atoms. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent V4+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a distorted trigonal planar geometry to one V4+, one Cd2+, and one P5+ atom. In the seventh O2- site, O2- is bonded in a bent 150 degrees geometry to one V4+ and one P5+ atom. In the eighth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one V4+ and one P5+ atom. In the ninth O2- site, O2- is bonded in a distorted trigonal planar geometry to one V4+, one Cd2+, and one P5+ atom. In the tenth O2- site, O2- is bonded in a 2-coordinate geometry to one V4+ and one P5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on BaVCdP2O9 by Materials Project

BaVCdP2O9 crystallizes in the orthorhombic Pbca space group. The structure is three-dimensional. Ba2+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Ba–O bond distances ranging from 2.70–3.20 Å. V4+ is bonded to five O2- atoms to form distorted VO5 trigonal bipyramids that share corners with four equivalent PO4 tetrahedra. There are a spread of V–O bond distances ranging from 1.63–2.04 Å. Cd2+ is bonded in a 4-coordinate geometry to six O2- atoms. There are a spread of Cd–O bond distances ranging from 2.21–2.76 Å. There are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of P–O bond distances ranging from 1.54–1.58 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four equivalent VO5 trigonal bipyramids. There are a spread of P–O bond distances ranging from 1.54–1.57 Å. There are nine inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to one Ba2+, one V4+, and one P5+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Ba2+, one Cd2+, and one P5+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to one V4+, one Cd2+, and one P5+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Ba2+, one Cd2+, and one P5+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Ba2+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a single-bond geometry to one Ba2+ and one V4+ atom. In the seventh O2- site, O2- is bonded in a 1-coordinate geometry to one Ba2+, two equivalent Cd2+, and one P5+ atom. In the eighth O2- site, O2- is bonded in a 2-coordinate geometry to one V4+, one Cd2+, and one P5+ atom. In the ninth O2- site, O2- is bonded in a 2-coordinate geometry to one Ba2+, one V4+, and one P5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CdSeO4 by Materials Project

CdSeO4 crystallizes in the orthorhombic Pmn2_1 space group. The structure is three-dimensional. Cd2+ is bonded in a 4-coordinate geometry to seven O2- atoms. There are a spread of Cd–O bond distances ranging from 2.28–2.98 Å. Se6+ is bonded in a tetrahedral geometry to four O2- atoms. There is two shorter (1.67 Å) and two longer (1.69 Å) Se–O bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to one Cd2+ and one Se6+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two equivalent Cd2+ and one Se6+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Cd2+ and one Se6+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CdSnO3 by Materials Project

CdSnO3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Cd2+ is bonded in a 4-coordinate geometry to eight O2- atoms. There are a spread of Cd–O bond distances ranging from 2.28–2.88 Å. Sn4+ is bonded to six O2- atoms to form corner-sharing SnO6 octahedra. The corner-sharing octahedra tilt angles range from 36–38°. There are four shorter (2.09 Å) and two longer (2.13 Å) Sn–O bond lengths. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to two equivalent Cd2+ and two equivalent Sn4+ atoms to form distorted corner-sharing OCd2Sn2 tetrahedra. In the second O2- site, O2- is bonded in a 5-coordinate geometry to three equivalent Cd2+ and two equivalent Sn4+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on UCd2O5 by Materials Project

UCd2O5 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. U6+ is bonded to six O2- atoms to form corner-sharing UO6 octahedra. The corner-sharing octahedral tilt angles are 54°. There are a spread of U–O bond distances ranging from 1.94–2.30 Å. Cd2+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Cd–O bond distances ranging from 2.20–2.32 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one U6+ and one Cd2+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one U6+ and two equivalent Cd2+ atoms. In the third O2- site, O2- is bonded to two equivalent U6+ and two equivalent Cd2+ atoms to form corner-sharing OU2Cd2 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on HfCdO3 by Materials Project

CdHfO3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Hf4+ is bonded to six O2- atoms to form corner-sharing HfO6 octahedra. The corner-sharing octahedral tilt angles are 36°. There are four shorter (2.09 Å) and two longer (2.11 Å) Hf–O bond lengths. Cd2+ is bonded in a 4-coordinate geometry to eight O2- atoms. There are a spread of Cd–O bond distances ranging from 2.30–2.85 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 5-coordinate geometry to two equivalent Hf4+ and three equivalent Cd2+ atoms. In the second O2- site, O2- is bonded to two equivalent Hf4+ and two equivalent Cd2+ atoms to form distorted corner-sharing OHf2Cd2 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Mn2CdO3 by Materials Project

Mn2CdO3 is Caswellsilverite-like structured and crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. Mn2+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with two equivalent CdO6 octahedra, corners with four equivalent MnO6 octahedra, edges with five equivalent CdO6 octahedra, and edges with seven equivalent MnO6 octahedra. The corner-sharing octahedra tilt angles range from 0–6°. There are a spread of Mn–O bond distances ranging from 2.22–2.31 Å. Cd2+ is bonded to six O2- atoms to form CdO6 octahedra that share corners with two equivalent CdO6 octahedra, corners with four equivalent MnO6 octahedra, edges with two equivalent CdO6 octahedra, and edges with ten equivalent MnO6 octahedra. The corner-sharing octahedra tilt angles range from 0–4°. There are two shorter (2.31 Å) and four longer (2.39 Å) Cd–O bond lengths. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to four equivalent Mn2+ and two equivalent Cd2+ atoms to form a mixture of edge and corner-sharing OMn4Cd2 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. In the second O2- site, O2- is bonded to four equivalent Mn2+ and two equivalent Cd2+ atoms to form a mixture of edge and corner-sharing OMn4Cd2 octahedra. The corner-sharing octahedra tilt angles range from 0–6°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on VCdCoO5 by Materials Project

VCoCdO5 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. V5+ is bonded to four O2- atoms to form VO4 tetrahedra that share corners with four equivalent CoO6 octahedra. The corner-sharing octahedra tilt angles range from 46–58°. There are a spread of V–O bond distances ranging from 1.72–1.77 Å. Co3+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with four equivalent VO4 tetrahedra and edges with two equivalent CoO6 octahedra. There are a spread of Co–O bond distances ranging from 1.88–2.11 Å. Cd2+ is bonded in a 4-coordinate geometry to six O2- atoms. There are a spread of Cd–O bond distances ranging from 2.18–2.81 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to one V5+, one Co3+, and two equivalent Cd2+ atoms. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one V5+ and two equivalent Co3+ atoms. In the third O2- site, O2- is bonded in a trigonal non-coplanar geometry to two equivalent Co3+ and one Cd2+ atom. In the fourth O2- site, O2- is bonded in a water-like geometry to one V5+ and one Cd2+ atom.

36 MATERIALS SCIENCE↗
NASA NTRS2000

Infrastructure for Training and Partnershipes: California Water and Coastal Ocean Resources

The purpose of this project was to advance the existing ICESS/Bren School computing infrastructure to allow scientists, students, and research trainees the opportunity to interact with environmental data and simulations in near-real time. Improvements made with the funding from this project have helped to strengthen the research efforts within both units, fostered graduate research training, and helped fortify partnerships with government and industry. With this funding, we were able to expand our computational environment in which computer resources, software, and data sets are shared by ICESS/Bren School faculty researchers in all areas of Earth system science. All of the graduate and undergraduate students associated with the Donald Bren School of Environmental Science and Management and the Institute for Computational Earth System Science have benefited from the infrastructure upgrades accomplished by this project. Additionally, the upgrades fostered a significant number of research projects (attached is a list of the projects that benefited from the upgrades). As originally proposed, funding for this project provided the following infrastructure upgrades: 1) a modem file management system capable of interoperating UNIX and NT file systems that can scale to 6.7 TB, 2) a Qualstar 40-slot tape library with two AIT tape drives and Legato Networker backup/archive software, 3) previously unavailable import/export capability for data sets on Zip, Jaz, DAT, 8mm, CD, and DLT media in addition to a 622Mb/s Internet 2 connection, 4) network switches capable of 100 Mbps to 128 desktop workstations, 5) Portable Batch System (PBS) computational task scheduler, and vi) two Compaq/Digital Alpha XP1000 compute servers each with 1.5 GB of RAM along with an SGI Origin 2000 (purchased partially using funds from this project along with funding from various other sources) to be used for very large computations, as required for simulation of mesoscale meteorology or climate.

Siegel, David A.↗
DOE OSTI2020

Materials Data on MgCd3(CO3)4 by Materials Project

MgCd3(CO3)4 is Calcite-derived structured and crystallizes in the trigonal R-3 space group. The structure is three-dimensional. Mg2+ is bonded to six equivalent O2- atoms to form MgO6 octahedra that share corners with six equivalent CdO6 octahedra. The corner-sharing octahedral tilt angles are 63°. All Mg–O bond lengths are 2.13 Å. There are two inequivalent Cd2+ sites. In the first Cd2+ site, Cd2+ is bonded to six equivalent O2- atoms to form corner-sharing CdO6 octahedra. The corner-sharing octahedral tilt angles are 61°. All Cd–O bond lengths are 2.32 Å. In the second Cd2+ site, Cd2+ is bonded to six O2- atoms to form CdO6 octahedra that share corners with three equivalent MgO6 octahedra and corners with three equivalent CdO6 octahedra. The corner-sharing octahedra tilt angles range from 61–63°. There are three shorter (2.33 Å) and three longer (2.37 Å) Cd–O bond lengths. There are two inequivalent C4+ sites. In the first C4+ site, C4+ is bonded in a trigonal planar geometry to three equivalent O2- atoms. All C–O bond lengths are 1.30 Å. In the second C4+ site, C4+ is bonded in a trigonal planar geometry to three equivalent O2- atoms. All C–O bond lengths are 1.30 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to one Mg2+, one Cd2+, and one C4+ atom. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to two Cd2+ and one C4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TiCdO3 by Materials Project

CdTiO3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pna2_1 space group. The structure is three-dimensional. Ti4+ is bonded to six O2- atoms to form corner-sharing TiO6 octahedra. The corner-sharing octahedra tilt angles range from 30–33°. There are a spread of Ti–O bond distances ranging from 1.88–2.17 Å. Cd2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Cd–O bond distances ranging from 2.27–2.90 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Ti4+ and three equivalent Cd2+ atoms. In the second O2- site, O2- is bonded in a 5-coordinate geometry to two equivalent Ti4+ and three equivalent Cd2+ atoms. In the third O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Ti4+ and two equivalent Cd2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2024

Cholesky Decomposition-Based Implementation of Relativistic Two-Component Coupled-Cluster Methods for Medium-Sized Molecules

A Cholesky decomposition (CD)-based implementation of relativistic two-component coupled-cluster (CC) and equation-of-motion CC (EOM-CC) methods using an exact two-component Hamiltonian augmented with atomic-mean-field integrals (the X2CAMF scheme) is reported. Furthermore, the present CD-based implementation of X2CAMF-CC and EOM-CC methods employs atomic-orbital-based algorithms to avoid the construction of two-electron integrals and intermediates involving three and four virtual indices. The CD-based implementation extends the applicability of X2CAMF-CC and EOMCC methods to medium-sized molecules with the correlation of around 1000 spinors. Benchmark calculations for uranium-containing small molecules have been performed to assess the dependence of CC results with respect to the Cholesky threshold. A Cholesky threshold of 10 –4 is shown to maintain chemical accuracy. Example calculations to illustrate the capability of the CD-based relativistic CC methods are reported for the bond dissociation energy of the uranium hexafluoride molecule, UF 6 , with up to quadruple-zeta basis sets and the lowest excitation energy in solvated uranyl ion [UO 2 2+ (H 2 O) 12 ].

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗
DOE OSTI2020

Materials Data on CdCuH8(ClO)4 by Materials Project

CuCdH4(OCl2)2(H2O)2 crystallizes in the triclinic P-1 space group. The structure is two-dimensional and consists of two water molecules and one CuCdH4(OCl2)2 sheet oriented in the (0, 1, 0) direction. In the CuCdH4(OCl2)2 sheet, Cu2+ is bonded to two equivalent O2- and four equivalent Cl1- atoms to form distorted CuCl4O2 octahedra that share corners with four equivalent CdCl6 octahedra and edges with two equivalent CuCl4O2 octahedra. The corner-sharing octahedra tilt angles range from 49–52°. Both Cu–O bond lengths are 1.97 Å. There are two shorter (2.32 Å) and two longer (2.90 Å) Cu–Cl bond lengths. Cd2+ is bonded to six Cl1- atoms to form CdCl6 octahedra that share corners with four equivalent CuCl4O2 octahedra and edges with two equivalent CdCl6 octahedra. The corner-sharing octahedra tilt angles range from 49–52°. There are a spread of Cd–Cl bond distances ranging from 2.64–2.70 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. O2- is bonded in a distorted trigonal non-coplanar geometry to one Cu2+ and two H1+ atoms. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 3-coordinate geometry to two equivalent Cu2+ and one Cd2+ atom. In the second Cl1- site, Cl1- is bonded in an L-shaped geometry to two equivalent Cd2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2Cd(NO2)4 by Materials Project

K2Cd(NO2)4 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. K1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of K–O bond distances ranging from 2.85–3.14 Å. Cd2+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are a spread of Cd–O bond distances ranging from 2.44–2.59 Å. There are three inequivalent N3+ sites. In the first N3+ site, N3+ is bonded in a bent 120 degrees geometry to two equivalent O2- atoms. Both N–O bond lengths are 1.27 Å. In the second N3+ site, N3+ is bonded in a bent 120 degrees geometry to two O2- atoms. Both N–O bond lengths are 1.27 Å. In the third N3+ site, N3+ is bonded in a bent 120 degrees geometry to two equivalent O2- atoms. Both N–O bond lengths are 1.27 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent K1+, one Cd2+, and one N3+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent K1+, one Cd2+, and one N3+ atom. In the third O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent K1+, one Cd2+, and one N3+ atom. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent K1+, one Cd2+, and one N3+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on MnCd(GaSe2)4 by Materials Project

MnCd(GaSe2)4 crystallizes in the tetragonal P-4 space group. The structure is three-dimensional. Mn2+ is bonded to four equivalent Se2- atoms to form MnSe4 tetrahedra that share corners with eight GaSe4 tetrahedra. All Mn–Se bond lengths are 2.57 Å. Cd2+ is bonded to four equivalent Se2- atoms to form CdSe4 tetrahedra that share corners with eight GaSe4 tetrahedra. All Cd–Se bond lengths are 2.67 Å. There are three inequivalent Ga3+ sites. In the first Ga3+ site, Ga3+ is bonded to four equivalent Se2- atoms to form GaSe4 tetrahedra that share corners with four equivalent CdSe4 tetrahedra and corners with four equivalent GaSe4 tetrahedra. All Ga–Se bond lengths are 2.45 Å. In the second Ga3+ site, Ga3+ is bonded to four equivalent Se2- atoms to form GaSe4 tetrahedra that share corners with four equivalent MnSe4 tetrahedra and corners with four equivalent GaSe4 tetrahedra. All Ga–Se bond lengths are 2.46 Å. In the third Ga3+ site, Ga3+ is bonded to four Se2- atoms to form GaSe4 tetrahedra that share corners with two equivalent MnSe4 tetrahedra, corners with two equivalent CdSe4 tetrahedra, and corners with four GaSe4 tetrahedra. There are two shorter (2.45 Å) and two longer (2.46 Å) Ga–Se bond lengths. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a trigonal non-coplanar geometry to one Mn2+ and two Ga3+ atoms. In the second Se2- site, Se2- is bonded in a trigonal non-coplanar geometry to one Cd2+ and two Ga3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Li2Cd(PO3)4 by Materials Project

Li2Cd(PO3)4 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Li1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Li–O bond distances ranging from 2.04–2.61 Å. Cd2+ is bonded to six O2- atoms to form CdO6 octahedra that share corners with six PO4 tetrahedra. There are a spread of Cd–O bond distances ranging from 2.22–2.39 Å. There are three inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form corner-sharing PO4 tetrahedra. There is two shorter (1.50 Å) and two longer (1.62 Å) P–O bond length. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent CdO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 44–52°. There are a spread of P–O bond distances ranging from 1.51–1.61 Å. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent CdO6 octahedra and corners with two equivalent PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 14–61°. There are a spread of P–O bond distances ranging from 1.48–1.61 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+, one Cd2+, and one P5+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Li1+ and one P5+ atom. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to two P5+ atoms. In the fourth O2- site, O2- is bonded in a distorted linear geometry to one Cd2+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Li1+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a bent 150 degrees geometry to two P5+ atoms. In the seventh O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Li1+, one Cd2+, and one P5+ atom. In the eighth O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+, one Cd2+, and one P5+ atom.

36 MATERIALS SCIENCE↗