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All sourcesNASA NTRSDOE OSTI
NASA NTRS2010

Rb-Sr and Sm-Nd Ages of Zagami DML and SR Isotopic Heterogeneity in Zagami

Zagami contains lithologic heterogeneity suggesting that it did not form in a homogeneous, thick lava flow [1]. We have previously investigated the Sr and Nd isotopic systematics of Coarse-Grained (CG) and Fine-Grained (FG) lithologies described by [2]. Both appear to belong to Normal Zagami (NZ) [1,3], but their initial Sr-isotopic compositions differ [4,5]. Here we report new analyses of the Dark Mottled Lithology (DML, [3]) that show its age and initial Sr and Nd isotopic compositions to be identical within error limits with those of CG, but Sr initial isotopic compositions differ from those of FG.

Nyquist, L.aurenceE.↗
NASA NTRS2012

Building Transatlantic Partnerships in Space Exploration The MPCV-SM Study

Following the approval of the ESA ISS Exploitation Declaration for the ISS lifetime at the ESA Council Meeting in March 2011, ESA decided to partially offset the European obligations deriving from the extension of the ISS Programme until end 2020 with different means than ATVs, following the ATV-5 mission foreseen in mid 2014. The envisioned approach is based on a barter element(s) that would generate cost avoidance on the NASA side. NASA and ESA considered a number of Barter options, and concluded that the provision by ESA of the Service Module for the NASA Multi-Purpose Crew Vehicle (MPCV) was the barter with the most interest. A joint ESA - NASA working group was established to assess the feasibility of Europe developing this Module based on ATV heritage. The working group was supported by European and US industry namely Astrium, TAS-I and Lockheed-Martin. This paper gives an overview of the results of the on-going study as well as its perspective utilisation for the global space exploration endeavour.

Wilde Detlef↗
NASA NTRS2017

Behavioral Health and Performance Laboratory Standard Measures (BHP-SM)

The Spaceflight Standard Measures is a NASA Johnson Space Center Human Research Project (HRP) project that proposes to collect a set of core measurements, representative of many of the human spaceflight risks, from astronauts before, during and after long-duration International Space Station (ISS) missions. The term "standard measures" is defined as a set of core measurements, including physiological, biochemical, psychosocial, cognitive, and functional, that are reliable, valid, and accepted in terrestrial science, are associated with a specific and measurable outcome known to occur as a consequence of spaceflight, that will be collected in a standardized fashion from all (or most) crewmembers. While such measures might be used to define standards of health and performance or readiness for flight, the prime intent in their collection is to allow longitudinal analysis of multiple parameters in order to answer a variety of operational, occupational, and research-based questions. These questions are generally at a high level, and the approach for this project is to populate the standard measures database with the smallest set of data necessary to indicate further detailed research is required. Also included as standard measures are parameters that are not outcome-based in and of-themselves, but provide ancillary information that supports interpretation of the outcome measures, e.g., nutritional assessment, vehicle environmental parameters, crew debriefs, etc. The project's main aim is to ensure that an optimized minimal set of measures is consistently captured from all ISS crewmembers until the end of Station in order to characterize the human in space. -This allows the HRP to identify, establish, and evaluate a common set of measures for use in spaceflight and analog research to: develop baselines, systematically characterize risk likelihood and consequences, and assess effectiveness of countermeasures that work for behavioral health and performance risk factors. -By standardizing the battery of measures on all crewmembers, it will allow the HRP to evaluate countermeasures that work for one physiological system and ensure another system is not negatively affected. -These measures, named "Standard Measures," will serve as a data repository and be available to other studies under data sharing agreements.

Williams, Thomas J.↗
DOE OSTI2020

Materials Data on Sm31(CuSe16)3 by Materials Project

Sm31(CuSe16)3 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are thirty-one inequivalent Sm sites. In the first Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.91–3.18 Å. In the second Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.91–3.35 Å. In the third Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.90–3.31 Å. In the fourth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.92–3.45 Å. In the fifth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.91–3.35 Å. In the sixth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.90–3.29 Å. In the seventh Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.92–3.21 Å. In the eighth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.91–3.43 Å. In the ninth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.90–3.41 Å. In the tenth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.91–3.34 Å. In the eleventh Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.93–3.40 Å. In the twelfth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.92–3.21 Å. In the thirteenth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.91–3.22 Å. In the fourteenth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.90–3.42 Å. In the fifteenth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.90–3.30 Å. In the sixteenth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.90–3.21 Å. In the seventeenth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.95–3.30 Å. In the eighteenth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.91–3.18 Å. In the nineteenth Sm site, Sm is bonded to eight Se atoms to form a mixture of distorted face, edge, and corner-sharing SmSe8 hexagonal bipyramids. There are a spread of Sm–Se bond distances ranging from 2.92–3.23 Å. In the twentieth Sm site, Sm is bonded to eight Se atoms to form a mixture of distorted face, edge, and corner-sharing SmSe8 hexagonal bipyramids. There are a spread of Sm–Se bond distances ranging from 2.95–3.24 Å. In the twenty-first Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.93–3.21 Å. In the twenty-second Sm site, Sm is bonded to eight Se atoms to form a mixture of distorted face, edge, and corner-sharing SmSe8 hexagonal bipyramids. There are a spread of Sm–Se bond distances ranging from 2.95–3.18 Å. In the twenty-third Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.90–3.35 Å. In the twenty-fourth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.91–3.29 Å. In the twenty-fifth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.90–3.37 Å. In the twenty-sixth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.94–3.36 Å. In the twenty-seventh Sm site, Sm is bonded to eight Se atoms to form a mixture of distorted face, edge, and corner-sharing SmSe8 hexagonal bipyramids. There are a spread of Sm–Se bond distances ranging from 2.95–3.28 Å. In the twenty-eighth Sm site, Sm is bonded to eight Se atoms to form a mixture of distorted face, edge, and corner-sharing SmSe8 hexagonal bipyramids. There are a spread of Sm–Se bond distances ranging from 2.91–3.22 Å. In the twenty-ninth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.92–3.20 Å. In the thirtieth Sm site, Sm is bonded in a 8-coordinate geometry to eight Se atoms. There are a spread of Sm–Se bond distances ranging from 2.92–3.42 Å. In the thirty-first Sm site, Sm is bonded to eight Se atoms to form a mixture of distorted face and corner-sharing SmSe8 hexagonal bipyramids. There are a spread of Sm–Se bond distances ranging from 2.95–3.24 Å. There are three inequivalent Cu sites. In the first Cu site, Cu is bonded in a distorted rectangular see-saw-like geometry to four Se atoms. There are a spread of Cu–Se bond distances ranging from 2.63–2.93 Å. In the second Cu site, Cu is bonded in a distorted square co-planar geometry to four Se atoms. There are a spread of Cu–Se bond distances ranging from 2.62–2.94 Å. In the third Cu site, Cu is bonded in a distorted rectangular see-saw-like geometry to four Se atoms. There are a spread of Cu–Se bond distances ranging from 2.67–2.85 Å. There are forty-eight inequivalent Se sites. In the first Se site, Se is bonded to five Sm and one Cu atom to form distorted SeSm5Cu octahedra that share corners with four SeSm5Cu octahedra, corners with five SeSm5 square pyramids, edges with four SeSm5Cu octahedra, edges with two SeSm5 square pyramids, a faceface with one SeSm5Cu octahedra, and faces with two SeSm5 square pyramids. The corner-sharing octahedra tilt angles range from 46–48°. In the second Se site, Se is bonded to five Sm and one Cu atom to form distorted SeSm5Cu octahedra that share corners with seven SeSm5Cu octahedra, corners with six SeSm5 square pyramids, edges with four SeSm5Cu octahedra, edges with three SeSm5 square pyramids, a faceface with one SeSm5Cu octahedra, and faces with two SeSm5 square pyramids. The corner-sharing octahedra tilt angles range from 17–48°. In the third Se site, Se is bonded to five Sm and one Cu atom to form distorted SeSm5Cu octahedra that share corners with six SeSm5Cu octahedra, corners with five SeSm5 square pyramids, edges with four SeSm5Cu octahedra, edges with two SeSm5 square pyramids, a faceface with one SeSm5Cu octahedra, and faces with two SeSm5 square pyramids. The corner-sharing octahedra tilt angles range from 17–48°. In the fourth Se site, Se is bonded in a 5-coordinate geometry to five Sm atoms. In the fifth Se site, Se is bonded to five Sm atoms to form distorted SeSm5 square pyramids that share corners with four SeSm5Cu octahedra, corners with six SeSm5 square pyramids, edges with two SeSm5Cu octahedra, edges with three SeSm5 square pyramids, and faces with two SeSm5Cu octahedra. The corner-sharing octahedra tilt angles range from 42–86°. In the sixth Se site, Se is bonded to five Sm atoms to form distorted SeSm5 square pyramids that share corners with seven SeSm5Cu octahedra, corners with five SeSm5 square pyramids, edges with three SeSm5Cu octahedra, edges with three SeSm5 square pyramids, and a faceface with one SeSm5Cu octahedra. The corner-sharing octahedra tilt angles range from 22–87°. In the seventh Se site, Se is bonded to five Sm and one Cu atom to form distorted SeSm5Cu octahedra that share corners with eight SeSm5Cu octahedra, corners with seven SeSm5 square pyramids, edges with five SeSm5Cu octahedra, edges with two SeSm5 square pyramids, a faceface with one SeSm6 octahedra, and faces with two SeSm5 square pyramids. The corner-sharing octahedra tilt angles range from 17–48°. In the eighth Se site, Se is bonded to five Sm and one Cu atom to form distorted SeSm5Cu octahedra that share corners with seven SeSm5Cu octahedra, corners with six SeSm5 square pyramids, edges with three SeSm5Cu octahedra, edges with three SeSm5 square pyramids, a faceface with one SeSm5Cu octahedra, and a faceface with one SeSm5 square pyramid. The corner-sharing octahedra tilt angles range from 17–48°. In the ninth Se site, Se is bonded to five Sm and one Cu atom to form distorted SeSm5Cu octahedra that share corners with seven SeSm5Cu octahedra, corners with seven SeSm5 square pyramids, edges with four SeSm5Cu octahedra, edges with three SeSm5 square pyramids, a faceface with one SeSm5Cu octahedra, and faces with two SeSm5 square pyramids. The corner-sharing octahedra tilt angles range from 16–48°. In the tenth Se site, Se is bonded to five Sm atoms to form distorted SeSm5 square pyramids that share corners with eight SeSm5Cu octahedra, corners with five SeSm5 square pyramids, edges with three SeSm5Cu octahedra, edges with five SeSm5 square pyramids, and faces with two SeSm5Cu octahedra. The corner-sharing octahedra tilt angles range from 21–87°. In the eleventh Se site, Se is bonded to five Sm atoms to form distorted SeSm5 square pyramids that share corners with eight SeSm5Cu octahedra, corners with five SeSm5 square pyramids, edges with three SeSm5Cu octahedra, edges with three SeSm5 square pyramids, and faces with two SeSm5Cu octahedra. The corner-sharing octahedra tilt angles range from 20–89°. In the twelfth Se site, Se is bonded to five Sm atoms to form distorted SeSm5 square pyramids that share corners with eight SeSm5Cu octahedra, corners with four SeSm5 square pyramids, edges with three SeSm5Cu octahedra, edges with four SeSm5 square pyramids, and faces with two SeSm5Cu octahedra. The corner-sharing octahedra tilt angles range from 22–87°. In the thirteenth Se site, Se is bonded to five Sm atoms to form SeSm5 square pyramids that share corners with eight SeSm6 octahedra, corners with five SeSm5 square pyramids, edges with two SeSm6 octahedra, edges with six SeSm5 square pyramids, and faces with two SeSm5 square pyramids. The corner-sharing octahedra tilt angles range from 19–52°. In the fourteenth Se site, Se is bonded to five Sm and one Cu atom to form distorted SeSm5Cu octahedra that share corners with seven SeSm5Cu octahedra, corners with eight SeSm5 square pyramids, edges with four SeSm5Cu octahedra, edges with two SeSm5 square pyramids, a faceface with one SeSm5Cu octahedra, and a faceface with one SeSm5 square pyramid. The corner-sharing octahedra tilt angles range from 17–48°. In the fifteenth Se site, Se is bonded to five Sm atoms to form distorted SeSm5 square pyramids that share corners with six SeSm5Cu octahedra, corners with two SeSm5 square pyramids, edges with three SeSm5Cu octahedra, edges with four SeSm5 square pyramids, and faces with two SeSm5Cu octahedra. The corner-sharing octahedra tilt angles range from 20–51°. In the sixteenth Se site, Se is bonded to five Sm and one Cu atom to form distorted SeSm5Cu octahedra that share corners with seven SeSm5Cu octahedra, corners with seven SeSm5 square pyramids, edges with four SeSm5Cu octahedra, edges with three SeSm5 square pyramids, a faceface with one SeSm5Cu octahedra, and faces with two SeSm5 square pyramids. The corner-sharing octahedra tilt angles range from 17–48°. In the seventeenth Se site, Se is bonded to six Sm atoms to form distorted SeSm6 octahedra that share corners with eight SeSm6 octahedra, corners with seven SeSm5 square pyramids, edges with three SeSm6 octahedra, edges with three SeSm5 square pyramids, faces with two SeSm6 octahedra, and faces with three

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sm25Ni49P33 by Materials Project

Sm25Ni49P33 crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. there are fifteen inequivalent Sm sites. In the first Sm site, Sm is bonded in a 12-coordinate geometry to twelve Ni and four P atoms. There are a spread of Sm–Ni bond distances ranging from 2.91–3.15 Å. There are two shorter (3.05 Å) and two longer (3.06 Å) Sm–P bond lengths. In the second Sm site, Sm is bonded in a 10-coordinate geometry to eight Ni and six P atoms. There are a spread of Sm–Ni bond distances ranging from 2.98–3.08 Å. There are a spread of Sm–P bond distances ranging from 2.95–3.00 Å. In the third Sm site, Sm is bonded in a 8-coordinate geometry to ten Ni and six P atoms. There are a spread of Sm–Ni bond distances ranging from 2.95–3.10 Å. There are two shorter (2.95 Å) and four longer (2.99 Å) Sm–P bond lengths. In the fourth Sm site, Sm is bonded in a 10-coordinate geometry to eight Ni and six P atoms. There are a spread of Sm–Ni bond distances ranging from 2.99–3.08 Å. There are a spread of Sm–P bond distances ranging from 2.96–3.01 Å. In the fifth Sm site, Sm is bonded in a 10-coordinate geometry to eight Ni and six P atoms. There are a spread of Sm–Ni bond distances ranging from 2.99–3.08 Å. There are a spread of Sm–P bond distances ranging from 2.96–3.01 Å. In the sixth Sm site, Sm is bonded to six Ni and six P atoms to form face-sharing SmNi6P6 cuboctahedra. All Sm–Ni bond lengths are 3.01 Å. All Sm–P bond lengths are 2.99 Å. In the seventh Sm site, Sm is bonded in a 10-coordinate geometry to eight Ni and six P atoms. There are a spread of Sm–Ni bond distances ranging from 2.98–3.08 Å. There are a spread of Sm–P bond distances ranging from 2.95–3.00 Å. In the eighth Sm site, Sm is bonded in a 10-coordinate geometry to eight Ni and six P atoms. There are a spread of Sm–Ni bond distances ranging from 2.99–3.08 Å. There are four shorter (2.98 Å) and two longer (3.00 Å) Sm–P bond lengths. In the ninth Sm site, Sm is bonded in a 10-coordinate geometry to eight Ni and six P atoms. There are a spread of Sm–Ni bond distances ranging from 2.99–3.08 Å. There are a spread of Sm–P bond distances ranging from 2.96–3.01 Å. In the tenth Sm site, Sm is bonded in a 8-coordinate geometry to ten Ni and six P atoms. There are a spread of Sm–Ni bond distances ranging from 2.96–3.10 Å. There are two shorter (2.95 Å) and four longer (2.99 Å) Sm–P bond lengths. In the eleventh Sm site, Sm is bonded in a 10-coordinate geometry to eight Ni and six P atoms. There are a spread of Sm–Ni bond distances ranging from 2.98–3.08 Å. There are a spread of Sm–P bond distances ranging from 2.95–3.00 Å. In the twelfth Sm site, Sm is bonded in a 10-coordinate geometry to eight Ni and six P atoms. There are a spread of Sm–Ni bond distances ranging from 2.99–3.08 Å. There are four shorter (2.98 Å) and two longer (3.00 Å) Sm–P bond lengths. In the thirteenth Sm site, Sm is bonded in a 12-coordinate geometry to twelve Ni and four equivalent P atoms. There are a spread of Sm–Ni bond distances ranging from 2.91–3.15 Å. All Sm–P bond lengths are 3.05 Å. In the fourteenth Sm site, Sm is bonded to six Ni and six P atoms to form a mixture of edge and face-sharing SmNi6P6 cuboctahedra. There are two shorter (2.99 Å) and four longer (3.00 Å) Sm–Ni bond lengths. All Sm–P bond lengths are 2.99 Å. In the fifteenth Sm site, Sm is bonded to six Ni and six P atoms to form a mixture of edge and face-sharing SmNi6P6 cuboctahedra. There are two shorter (2.99 Å) and four longer (3.00 Å) Sm–Ni bond lengths. All Sm–P bond lengths are 2.99 Å. There are twenty-eight inequivalent Ni sites. In the first Ni site, Ni is bonded to four Sm and four P atoms to form a mixture of distorted edge and face-sharing NiSm4P4 tetrahedra. There are two shorter (2.31 Å) and two longer (2.33 Å) Ni–P bond lengths. In the second Ni site, Ni is bonded in a distorted single-bond geometry to two Sm, four Ni, and one P atom. All Ni–Ni bond lengths are 2.45 Å. The Ni–P bond length is 2.17 Å. In the third Ni site, Ni is bonded in a distorted trigonal planar geometry to six Sm and three P atoms. There are a spread of Ni–P bond distances ranging from 2.25–2.28 Å. In the fourth Ni site, Ni is bonded to four Sm and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiSm4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.32–2.34 Å. In the fifth Ni site, Ni is bonded in a 3-coordinate geometry to three Sm, one Ni, and three P atoms. The Ni–Ni bond length is 2.50 Å. There are one shorter (2.22 Å) and two longer (2.36 Å) Ni–P bond lengths. In the sixth Ni site, Ni is bonded to four Sm and four P atoms to form a mixture of distorted edge and face-sharing NiSm4P4 tetrahedra. There are two shorter (2.31 Å) and two longer (2.33 Å) Ni–P bond lengths. In the seventh Ni site, Ni is bonded to four Sm and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiSm4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.32–2.34 Å. In the eighth Ni site, Ni is bonded in a 3-coordinate geometry to three Sm, one Ni, and three P atoms. The Ni–Ni bond length is 2.50 Å. There are one shorter (2.22 Å) and two longer (2.36 Å) Ni–P bond lengths. In the ninth Ni site, Ni is bonded to four Sm and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiSm4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.32–2.34 Å. In the tenth Ni site, Ni is bonded in a 10-coordinate geometry to two equivalent Sm and eight Ni atoms. There are a spread of Ni–Ni bond distances ranging from 2.39–2.50 Å. In the eleventh Ni site, Ni is bonded to four Sm and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiSm4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.32–2.34 Å. In the twelfth Ni site, Ni is bonded in a distorted trigonal planar geometry to six Sm and three P atoms. There are one shorter (2.25 Å) and two longer (2.28 Å) Ni–P bond lengths. In the thirteenth Ni site, Ni is bonded to four Sm and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiSm4P4 tetrahedra. There are two shorter (2.32 Å) and two longer (2.33 Å) Ni–P bond lengths. In the fourteenth Ni site, Ni is bonded to four Sm and four P atoms to form a mixture of distorted edge and face-sharing NiSm4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.31–2.34 Å. In the fifteenth Ni site, Ni is bonded to four Sm and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiSm4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.32–2.34 Å. In the sixteenth Ni site, Ni is bonded in a 10-coordinate geometry to two equivalent Sm and eight Ni atoms. In the seventeenth Ni site, Ni is bonded in a 3-coordinate geometry to three Sm, one Ni, and three P atoms. There are one shorter (2.22 Å) and two longer (2.36 Å) Ni–P bond lengths. In the eighteenth Ni site, Ni is bonded to four Sm and four P atoms to form a mixture of distorted edge and face-sharing NiSm4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.31–2.34 Å. In the nineteenth Ni site, Ni is bonded to four Sm and four P atoms to form a mixture of distorted edge and face-sharing NiSm4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.31–2.34 Å. In the twentieth Ni site, Ni is bonded in a distorted trigonal planar geometry to six Sm and three P atoms. There are two shorter (2.23 Å) and one longer (2.28 Å) Ni–P bond lengths. In the twenty-first Ni site, Ni is bonded in a 3-coordinate geometry to six Sm and three P atoms. There are two shorter (2.26 Å) and one longer (2.28 Å) Ni–P bond lengths. In the twenty-second Ni site, Ni is bonded in a 3-coordinate geometry to six Sm and three P atoms. There are two shorter (2.26 Å) and one longer (2.28 Å) Ni–P bond lengths. In the twenty-third Ni site, Ni is bonded in a distorted trigonal planar geometry to six Sm and three P atoms. There are two shorter (2.27 Å) and one longer (2.28 Å) Ni–P bond lengths. In the twenty-fourth Ni site, Ni is bonded in a distorted trigonal planar geometry to six Sm and three P atoms. There are a spread of Ni–P bond distances ranging from 2.25–2.28 Å. In the twenty-fifth Ni site, Ni is bonded in a distorted trigonal planar geometry to six Sm and three P atoms. There are two shorter (2.23 Å) and one longer (2.28 Å) Ni–P bond lengths. In the twenty-sixth Ni site, Ni is bonded in a distorted trigonal planar geometry to six Sm and three P atoms. There are one shorter (2.25 Å) and two longer (2.28 Å) Ni–P bond lengths. In the twenty-seventh Ni site, Ni is bonded in a distorted trigonal planar geometry to six Sm and three P atoms. There are a spread of Ni–P bond distances ranging from 2.25–2.28 Å. In the twenty-eighth Ni site, Ni is bonded in a distorted single-bond geometry to two equivalent Sm, four equivalent Ni, and one P atom. The Ni–P bond length is 2.17 Å. There are nineteen inequivalent P sites. In the first P site, P is bonded in a 9-coordinate geometry to four Sm and five Ni atoms. In the second P site, P is bonded in a 9-coordinate geometry to four Sm and five Ni atoms. In the third P site, P is bonded in a 3-coordinate geometry to six Sm and three Ni atoms. In the fourth P site, P is bonded in a 9-coordinate geometry to four equivalent Sm and five Ni atoms. In the fifth P site, P is bonded in a 9-coordinate geometry to four Sm and five Ni atoms. In the sixth P site, P is bonded in a 9-coordinate geometry to four Sm and five Ni atoms. In the seventh P site, P is bonded in a 3-coordinate geometry to six Sm and three Ni atoms. In the eighth P site, P is bonded in a 9-coordinate geometry to four Sm and five Ni atoms. In the ninth P site, P is bonded in a 9-coordinate geometry to four Sm and five Ni atoms. In the tenth P site, P is bonded in a 3-coordinate geometry to six Sm and three Ni atoms. In the eleventh P site, P is bonded in a 9-coordinate geometry to four Sm and five Ni atoms. In the twelfth P site, P is bonded in a 9-coordinate geometry to four Sm and five Ni atoms. In the thirteenth P site, P is bonded in a 9-coordinate geometry to four Sm and five Ni atoms. In the fourteenth P site, P is bonded in a 9-coordinate geometry to two equivalent Sm and seven Ni atoms. In the fifteenth P site, P is bonded in a 9-coordinate geometry to two equivalent Sm and seven Ni atoms. In the sixteenth P site, P is bonded in a 9-coordinate geometry to four Sm and five Ni atoms. In the seventeenth P site, P is bonded in a 3-coordinate geometry to six Sm and three Ni atoms. In the eighteenth P site, P is bonded in a 3-coordinate geometry to six Sm and three Ni atoms. In the nineteenth P site, P is bonded in a 3-coordinate geometry to six Sm and three Ni atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sm10Pd21 by Materials Project

Sm10Pd21 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are twenty inequivalent Sm sites. In the first Sm site, Sm is bonded in a 10-coordinate geometry to ten Pd atoms. There are a spread of Sm–Pd bond distances ranging from 2.80–3.11 Å. In the second Sm site, Sm is bonded in a 11-coordinate geometry to eleven Pd atoms. There are a spread of Sm–Pd bond distances ranging from 2.88–3.19 Å. In the third Sm site, Sm is bonded in a 10-coordinate geometry to ten Pd atoms. There are a spread of Sm–Pd bond distances ranging from 2.80–3.10 Å. In the fourth Sm site, Sm is bonded in a 10-coordinate geometry to ten Pd atoms. There are a spread of Sm–Pd bond distances ranging from 2.88–3.21 Å. In the fifth Sm site, Sm is bonded in a 11-coordinate geometry to eleven Pd atoms. There are a spread of Sm–Pd bond distances ranging from 2.88–3.15 Å. In the sixth Sm site, Sm is bonded in a 11-coordinate geometry to eleven Pd atoms. There are a spread of Sm–Pd bond distances ranging from 2.89–3.16 Å. In the seventh Sm site, Sm is bonded in a 11-coordinate geometry to eleven Pd atoms. There are a spread of Sm–Pd bond distances ranging from 2.88–3.16 Å. In the eighth Sm site, Sm is bonded in a 9-coordinate geometry to nine Pd atoms. There are a spread of Sm–Pd bond distances ranging from 2.83–3.04 Å. In the ninth Sm site, Sm is bonded in a 11-coordinate geometry to eleven Pd atoms. There are a spread of Sm–Pd bond distances ranging from 2.91–3.07 Å. In the tenth Sm site, Sm is bonded in a 9-coordinate geometry to eleven Pd atoms. There are a spread of Sm–Pd bond distances ranging from 2.88–3.50 Å. In the eleventh Sm site, Sm is bonded in a distorted q6 geometry to ten Pd atoms. There are a spread of Sm–Pd bond distances ranging from 2.92–3.03 Å. In the twelfth Sm site, Sm is bonded in a 11-coordinate geometry to eleven Pd atoms. There are a spread of Sm–Pd bond distances ranging from 2.92–3.07 Å. In the thirteenth Sm site, Sm is bonded in a 9-coordinate geometry to eleven Pd atoms. There are a spread of Sm–Pd bond distances ranging from 2.86–3.53 Å. In the fourteenth Sm site, Sm is bonded in a 10-coordinate geometry to ten Pd atoms. There are a spread of Sm–Pd bond distances ranging from 2.88–3.20 Å. In the fifteenth Sm site, Sm is bonded in a 9-coordinate geometry to eleven Pd atoms. There are a spread of Sm–Pd bond distances ranging from 2.86–3.52 Å. In the sixteenth Sm site, Sm is bonded in a distorted q6 geometry to ten Pd atoms. There are a spread of Sm–Pd bond distances ranging from 2.92–3.03 Å. In the seventeenth Sm site, Sm is bonded in a 11-coordinate geometry to eleven Pd atoms. There are a spread of Sm–Pd bond distances ranging from 2.87–3.49 Å. In the eighteenth Sm site, Sm is bonded in a 11-coordinate geometry to eleven Pd atoms. There are a spread of Sm–Pd bond distances ranging from 2.89–3.18 Å. In the nineteenth Sm site, Sm is bonded in a 11-coordinate geometry to eleven Pd atoms. There are a spread of Sm–Pd bond distances ranging from 2.88–3.19 Å. In the twentieth Sm site, Sm is bonded in a 9-coordinate geometry to nine Pd atoms. There are a spread of Sm–Pd bond distances ranging from 2.83–3.05 Å. There are forty-two inequivalent Pd sites. In the first Pd site, Pd is bonded in a 12-coordinate geometry to six Sm and six Pd atoms. There are a spread of Pd–Pd bond distances ranging from 2.74–3.11 Å. In the second Pd site, Pd is bonded to five Sm and two Pd atoms to form distorted PdSm5Pd2 trigonal bipyramids that share a cornercorner with one PdSm6Pd2 octahedra, corners with two equivalent PdSm5Pd2 trigonal bipyramids, and a faceface with one PdSm5Pd6 trigonal bipyramid. The corner-sharing octahedral tilt angles are 61°. There are one shorter (3.00 Å) and one longer (3.01 Å) Pd–Pd bond lengths. In the third Pd site, Pd is bonded in a 5-coordinate geometry to five Sm and four Pd atoms. There are a spread of Pd–Pd bond distances ranging from 2.86–2.99 Å. In the fourth Pd site, Pd is bonded to six Sm and two Pd atoms to form distorted PdSm6Pd2 octahedra that share corners with two equivalent PdSm6Pd2 octahedra, corners with four PdSm5Pd2 trigonal bipyramids, edges with two PdSm5Pd7 cuboctahedra, and faces with two PdSm5Pd7 cuboctahedra. The corner-sharing octahedral tilt angles are 6°. There are one shorter (3.04 Å) and one longer (3.06 Å) Pd–Pd bond lengths. In the fifth Pd site, Pd is bonded in a 12-coordinate geometry to five Sm atoms. In the sixth Pd site, Pd is bonded in a 5-coordinate geometry to five Sm and two Pd atoms. Both Pd–Pd bond lengths are 2.85 Å. In the seventh Pd site, Pd is bonded in a 5-coordinate geometry to five Sm and four Pd atoms. There are a spread of Pd–Pd bond distances ranging from 2.86–2.99 Å. In the eighth Pd site, Pd is bonded in a 5-coordinate geometry to five Sm and four Pd atoms. There are a spread of Pd–Pd bond distances ranging from 2.95–3.19 Å. In the ninth Pd site, Pd is bonded in a 6-coordinate geometry to six Sm and two Pd atoms. There are one shorter (3.02 Å) and one longer (3.03 Å) Pd–Pd bond lengths. In the tenth Pd site, Pd is bonded in a 12-coordinate geometry to five Sm and seven Pd atoms. There are a spread of Pd–Pd bond distances ranging from 2.85–2.98 Å. In the eleventh Pd site, Pd is bonded in a 5-coordinate geometry to five Sm and four Pd atoms. There are a spread of Pd–Pd bond distances ranging from 2.97–3.18 Å. In the twelfth Pd site, Pd is bonded in a distorted rectangular see-saw-like geometry to four Sm and six Pd atoms. There are a spread of Pd–Pd bond distances ranging from 2.90–3.09 Å. In the thirteenth Pd site, Pd is bonded to five Sm and six Pd atoms to form distorted PdSm5Pd6 trigonal bipyramids that share corners with two PdSm5Pd7 cuboctahedra, a cornercorner with one PdSm6Pd2 octahedra, corners with two equivalent PdSm5Pd6 trigonal bipyramids, and faces with four PdSm5Pd2 trigonal bipyramids. The corner-sharing octahedral tilt angles are 31°. There are a spread of Pd–Pd bond distances ranging from 2.93–3.17 Å. In the fourteenth Pd site, Pd is bonded to five Sm and two Pd atoms to form distorted PdSm5Pd2 trigonal bipyramids that share a cornercorner with one PdSm6Pd2 octahedra, corners with two equivalent PdSm5Pd2 trigonal bipyramids, and a faceface with one PdSm5Pd6 trigonal bipyramid. The corner-sharing octahedral tilt angles are 25°. Both Pd–Pd bond lengths are 2.99 Å. In the fifteenth Pd site, Pd is bonded to five Sm and six Pd atoms to form distorted PdSm5Pd6 trigonal bipyramids that share corners with two PdSm5Pd7 cuboctahedra, corners with two equivalent PdSm5Pd6 trigonal bipyramids, and faces with five PdSm5Pd6 trigonal bipyramids. There are a spread of Pd–Pd bond distances ranging from 2.95–3.11 Å. In the sixteenth Pd site, Pd is bonded to five Sm and seven Pd atoms to form distorted PdSm5Pd7 cuboctahedra that share corners with two equivalent PdSm5Pd7 cuboctahedra, corners with two PdSm5Pd6 trigonal bipyramids, edges with two equivalent PdSm5Pd7 cuboctahedra, an edgeedge with one PdSm6Pd2 octahedra, faces with three PdSm5Pd7 cuboctahedra, and a faceface with one PdSm6Pd2 octahedra. There are a spread of Pd–Pd bond distances ranging from 2.86–2.99 Å. In the seventeenth Pd site, Pd is bonded in a 12-coordinate geometry to six Sm and six Pd atoms. There are one shorter (3.05 Å) and one longer (3.10 Å) Pd–Pd bond lengths. In the eighteenth Pd site, Pd is bonded in a 12-coordinate geometry to five Sm and seven Pd atoms. There are a spread of Pd–Pd bond distances ranging from 2.87–2.98 Å. In the nineteenth Pd site, Pd is bonded in a 5-coordinate geometry to five Sm and two Pd atoms. There are one shorter (2.84 Å) and one longer (2.86 Å) Pd–Pd bond lengths. In the twentieth Pd site, Pd is bonded to five Sm and seven Pd atoms to form distorted PdSm5Pd7 cuboctahedra that share corners with two equivalent PdSm5Pd7 cuboctahedra, corners with two PdSm5Pd6 trigonal bipyramids, edges with two equivalent PdSm5Pd7 cuboctahedra, an edgeedge with one PdSm6Pd2 octahedra, faces with three PdSm5Pd7 cuboctahedra, and a faceface with one PdSm6Pd2 octahedra. There are one shorter (2.92 Å) and one longer (3.00 Å) Pd–Pd bond lengths. In the twenty-first Pd site, Pd is bonded in a 5-coordinate geometry to five Sm and four Pd atoms. There are a spread of Pd–Pd bond distances ranging from 2.86–3.00 Å. In the twenty-second Pd site, Pd is bonded in a distorted rectangular see-saw-like geometry to four Sm and two Pd atoms. The Pd–Pd bond length is 2.91 Å. In the twenty-third Pd site, Pd is bonded to five Sm and six Pd atoms to form distorted PdSm5Pd6 trigonal bipyramids that share corners with two PdSm5Pd7 cuboctahedra, corners with two equivalent PdSm5Pd6 trigonal bipyramids, and faces with four PdSm5Pd6 trigonal bipyramids. There are a spread of Pd–Pd bond distances ranging from 2.93–3.16 Å. In the twenty-fourth Pd site, Pd is bonded in a 12-coordinate geometry to five Sm and seven Pd atoms. In the twenty-fifth Pd site, Pd is bonded to five Sm and seven Pd atoms to form distorted PdSm5Pd7 cuboctahedra that share corners with two equivalent PdSm5Pd7 cuboctahedra, corners with two PdSm5Pd6 trigonal bipyramids, edges with two equivalent PdSm5Pd7 cuboctahedra, and faces with three PdSm5Pd7 cuboctahedra. There are a spread of Pd–Pd bond distances ranging from 2.88–2.97 Å. In the twenty-sixth Pd site, Pd is bonded in a distorted square co-planar geometry to four Sm atoms. In the twenty-seventh Pd site, Pd is bonded in a 5-coordinate geometry to five Sm atoms. In the twenty-eighth Pd site, Pd is bonded in a 12-coordinate geometry to five Sm and seven Pd atoms. There are a spread of Pd–Pd bond distances ranging from 2.85–2.93 Å. In the twenty-ninth Pd site, Pd is bonded in a 12-coordinate geometry to five Sm and seven Pd atoms. The Pd–Pd bond length is 2.94 Å. In the thirtieth Pd site, Pd is bonded in a 12-coordinate geometry to six Sm and six Pd atoms. There are a spread of Pd–Pd bond distances ranging from 2.74–3.11 Å. In the thirty-first Pd site, Pd is bonded to five Sm and six Pd atoms to form distorted PdSm5Pd6 trigonal bipyramids that share corners with two PdSm5Pd7 cuboctahedra, a cornercorner with one PdSm6Pd2 octahedra, corners with two equivalent PdSm5Pd6 trigonal bipyramids, and faces with five PdSm5Pd6 trigonal bipyramids. The corner-sharing octahedral tilt angles are 32°. The Pd–Pd bond length is 2.98 Å. In the thirty-second Pd site, Pd is bonded in a distorted rectangular see-saw-like geometry to four Sm and six Pd atoms. The Pd–Pd bond length is 2.94 Å. In the thirty-third Pd site, Pd is bonded in a 5-coordinate geometry to five Sm and four Pd atoms. The Pd–Pd bond length is 2.85 Å. In the thirty-fourth Pd site, Pd is bonded in a 12-coordinate geometry to five Sm and seven Pd atoms. The Pd–Pd bond length is 2.91 Å. In the thirty-fifth Pd site, Pd is bonded in a distorted rectangular see-saw-like geometry to four Sm and two Pd atoms. In the thirty-sixth Pd site, Pd is bonded in a 12-coordinate geometry to five Sm atoms. In the thirty-seventh Pd site, Pd is bonded in a 12-coordinate geometry to six Sm and six Pd atoms. In the thirty-eighth Pd site, Pd is bonded to five Sm and seven Pd atoms to form distorted PdSm5Pd7 cuboctahedra that share corners with two equivalent PdSm5Pd7 cuboctahedra, corners with two PdSm5Pd6 trigonal bipyramids, edges with two equivalent PdSm5Pd7 cuboctahedra, and faces with three PdSm5Pd7 cuboctahedra. In the thirty-ninth Pd site, Pd is bonded in a distorted square co-planar geometry to four Sm atoms. In the fortieth Pd site, Pd is bonded in a 12-coordinate geometry to five Sm and seven Pd atoms. There are one shorter (2.87 Å) and one longer (2.98 Å) Pd–Pd bond lengths. In the forty-first Pd site, Pd is bonded in a 12-coordinate geometry to five Sm and seven Pd atoms. In the forty-second Pd site, Pd is bonded in a 12-coordinate geometry to five Sm atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sm3MoO7 by Materials Project

Sm3MoO7 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are twenty-four inequivalent Sm+2.67+ sites. In the first Sm+2.67+ site, Sm+2.67+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Sm–O bond distances ranging from 2.32–2.94 Å. In the second Sm+2.67+ site, Sm+2.67+ is bonded to seven O2- atoms to form distorted SmO7 pentagonal bipyramids that share corners with two MoO6 octahedra, corners with three SmO7 pentagonal bipyramids, and edges with two MoO6 octahedra. The corner-sharing octahedra tilt angles range from 40–44°. There are a spread of Sm–O bond distances ranging from 2.28–2.58 Å. In the third Sm+2.67+ site, Sm+2.67+ is bonded to seven O2- atoms to form distorted SmO7 pentagonal bipyramids that share corners with two MoO6 octahedra, corners with two equivalent SmO7 pentagonal bipyramids, and edges with two MoO6 octahedra. The corner-sharing octahedra tilt angles range from 40–44°. There are a spread of Sm–O bond distances ranging from 2.28–2.58 Å. In the fourth Sm+2.67+ site, Sm+2.67+ is bonded to seven O2- atoms to form distorted SmO7 pentagonal bipyramids that share corners with two MoO6 octahedra, a cornercorner with one SmO7 pentagonal bipyramid, edges with two MoO6 octahedra, and edges with two equivalent SmO7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 29–36°. There are a spread of Sm–O bond distances ranging from 2.32–2.57 Å. In the fifth Sm+2.67+ site, Sm+2.67+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Sm–O bond distances ranging from 2.32–2.58 Å. In the sixth Sm+2.67+ site, Sm+2.67+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Sm–O bond distances ranging from 2.32–2.58 Å. In the seventh Sm+2.67+ site, Sm+2.67+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Sm–O bond distances ranging from 2.33–2.58 Å. In the eighth Sm+2.67+ site, Sm+2.67+ is bonded to seven O2- atoms to form SmO7 pentagonal bipyramids that share corners with two MoO6 octahedra, corners with two equivalent SmO7 pentagonal bipyramids, edges with two MoO6 octahedra, and edges with two equivalent SmO7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 39–44°. There are a spread of Sm–O bond distances ranging from 2.28–2.57 Å. In the ninth Sm+2.67+ site, Sm+2.67+ is bonded to seven O2- atoms to form distorted SmO7 pentagonal bipyramids that share corners with two MoO6 octahedra, corners with two equivalent SmO7 pentagonal bipyramids, and edges with two MoO6 octahedra. The corner-sharing octahedra tilt angles range from 40–44°. There are a spread of Sm–O bond distances ranging from 2.28–2.58 Å. In the tenth Sm+2.67+ site, Sm+2.67+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Sm–O bond distances ranging from 2.32–2.95 Å. In the eleventh Sm+2.67+ site, Sm+2.67+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Sm–O bond distances ranging from 2.32–2.92 Å. In the twelfth Sm+2.67+ site, Sm+2.67+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Sm–O bond distances ranging from 2.32–2.92 Å. In the thirteenth Sm+2.67+ site, Sm+2.67+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Sm–O bond distances ranging from 2.32–2.94 Å. In the fourteenth Sm+2.67+ site, Sm+2.67+ is bonded to seven O2- atoms to form distorted SmO7 pentagonal bipyramids that share corners with two MoO6 octahedra, corners with two equivalent SmO7 pentagonal bipyramids, and edges with two MoO6 octahedra. The corner-sharing octahedra tilt angles range from 40–44°. There are a spread of Sm–O bond distances ranging from 2.28–2.58 Å. In the fifteenth Sm+2.67+ site, Sm+2.67+ is bonded to seven O2- atoms to form SmO7 pentagonal bipyramids that share corners with two MoO6 octahedra, corners with two equivalent SmO7 pentagonal bipyramids, and edges with two MoO6 octahedra. The corner-sharing octahedra tilt angles range from 39–44°. There are a spread of Sm–O bond distances ranging from 2.28–2.57 Å. In the sixteenth Sm+2.67+ site, Sm+2.67+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Sm–O bond distances ranging from 2.33–2.58 Å. In the seventeenth Sm+2.67+ site, Sm+2.67+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Sm–O bond distances ranging from 2.32–2.58 Å. In the eighteenth Sm+2.67+ site, Sm+2.67+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Sm–O bond distances ranging from 2.32–2.58 Å. In the nineteenth Sm+2.67+ site, Sm+2.67+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Sm–O bond distances ranging from 2.32–2.58 Å. In the twentieth Sm+2.67+ site, Sm+2.67+ is bonded to seven O2- atoms to form distorted SmO7 pentagonal bipyramids that share corners with two MoO6 octahedra, corners with two equivalent SmO7 pentagonal bipyramids, and edges with two MoO6 octahedra. The corner-sharing octahedra tilt angles range from 41–44°. There are a spread of Sm–O bond distances ranging from 2.28–2.58 Å. In the twenty-first Sm+2.67+ site, Sm+2.67+ is bonded to seven O2- atoms to form SmO7 pentagonal bipyramids that share corners with two MoO6 octahedra, corners with two equivalent SmO7 pentagonal bipyramids, and edges with two MoO6 octahedra. The corner-sharing octahedra tilt angles range from 40–44°. There are a spread of Sm–O bond distances ranging from 2.28–2.58 Å. In the twenty-second Sm+2.67+ site, Sm+2.67+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Sm–O bond distances ranging from 2.32–2.92 Å. In the twenty-third Sm+2.67+ site, Sm+2.67+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Sm–O bond distances ranging from 2.32–2.94 Å. In the twenty-fourth Sm+2.67+ site, Sm+2.67+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Sm–O bond distances ranging from 2.32–2.88 Å. There are eight inequivalent Mo6+ sites. In the first Mo6+ site, Mo6+ is bonded to six O2- atoms to form MoO6 octahedra that share corners with two equivalent MoO6 octahedra, corners with two SmO7 pentagonal bipyramids, and edges with three SmO7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 41°. There are a spread of Mo–O bond distances ranging from 1.88–2.13 Å. In the second Mo6+ site, Mo6+ is bonded to six O2- atoms to form MoO6 octahedra that share corners with two equivalent MoO6 octahedra, corners with two SmO7 pentagonal bipyramids, and edges with two SmO7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 41°. There are a spread of Mo–O bond distances ranging from 1.88–2.13 Å. In the third Mo6+ site, Mo6+ is bonded to six O2- atoms to form MoO6 octahedra that share corners with two equivalent MoO6 octahedra, corners with three SmO7 pentagonal bipyramids, and edges with two SmO7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 40–41°. There are a spread of Mo–O bond distances ranging from 1.89–2.13 Å. In the fourth Mo6+ site, Mo6+ is bonded to six O2- atoms to form MoO6 octahedra that share corners with two equivalent MoO6 octahedra, corners with two SmO7 pentagonal bipyramids, and edges with two SmO7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 41°. There are a spread of Mo–O bond distances ranging from 1.88–2.13 Å. In the fifth Mo6+ site, Mo6+ is bonded to six O2- atoms to form MoO6 octahedra that share corners with two equivalent MoO6 octahedra, corners with three SmO7 pentagonal bipyramids, and edges with two SmO7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 40–41°. There are a spread of Mo–O bond distances ranging from 1.88–2.13 Å. In the sixth Mo6+ site, Mo6+ is bonded to six O2- atoms to form MoO6 octahedra that share corners with two equivalent MoO6 octahedra, corners with two SmO7 pentagonal bipyramids, and edges with two SmO7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 41°. There are a spread of Mo–O bond distances ranging from 1.89–2.13 Å. In the seventh Mo6+ site, Mo6+ is bonded to six O2- atoms to form MoO6 octahedra that share corners with two equivalent MoO6 octahedra, corners with two SmO7 pentagonal bipyramids, and edges with three SmO7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 41°. There are a spread of Mo–O bond distances ranging from 1.88–2.13 Å. In the eighth Mo6+ site, Mo6+ is bonded to six O2- atoms to form MoO6 octahedra that share corners with two equivalent MoO6 octahedra, corners with two SmO7 pentagonal bipyramids, and edges with two SmO7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 41°. There are a spread of Mo–O bond distances ranging from 1.89–2.13 Å. There are fifty-six inequivalent O2- sites. In the first O2- site, O2- is bonded to four Sm+2.67+ atoms to form OSm4 tetrahedra that share corners with eight OSm3Mo tetrahedra, corners with two OSm3Mo trigonal pyramids, edges with two OSm4 tetrahedra, and an edgeedge with one OSm3Mo trigonal pyramid. In the second O2- site, O2- is bonded to four Sm+2.67+ atoms to form OSm4 tetrahedra that share corners with eight OSm3Mo tetrahedra, corners with two OSm3Mo trigonal pyramids, edges with two OSm4 tetrahedra, and an edgeedge with one OSm3Mo trigonal pyramid. In the third O2- site, O2- is bonded to four Sm+2.67+ atoms to form a mixture of edge and corner-sharing OSm4 tetrahedra. In the fourth O2- site, O2- is bonded to four Sm+2.67+ atoms to form a mixture of edge and corner-sharing OSm4 tetrahedra. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to two Sm+2.67+ and two Mo6+ atoms. In the sixth O2- site, O2- is bonded in a 4-coordinate geometry to two Sm+2.67+ and two Mo6+ atoms. In the seventh O2- site, O2- is bonded in a 3-coordinate geometry to two Sm+2.67+ and one Mo6+ atom. In the eighth O2- site, O2- is bonded in a 3-coordinate geometry to two Sm+2.67+ and one Mo6+ atom. In the ninth O2- site, O2- is bonded to three Sm+2.67+ and one Mo6+ atom to form distorted OSm3Mo trigonal pyramids that share corners with four OSm4 tetrahedra and edges with four OSm3Mo tetrahedra. In the tenth O2- site, O2- is bonded to three Sm+2.67+ and one Mo6+ atom to form distorted OSm3Mo trigonal pyramids that share corners with four OSm4 tetrahedra and edges with four OSm3Mo tetrahedra. In the eleventh O2- site, O2- is bonded in a 4-coordinate geometry to three Sm+2.67+ and one Mo6+ atom. In the twelfth O2- site, O2- is bonded in a 4-coordinate geometry to three Sm+2.67+ and one Mo6+ atom. In the thirteenth O2- site, O2- is bonded to three Sm+2.67+ and one Mo6+ atom to form distorted OSm3Mo tetrahedra that share corners with four OSm4 tetrahedra, edges with two OSm4 tetrahedra, and edges with two OSm3Mo trigonal pyramids. In the fourteenth O2- site, O2- is bonded to three Sm+2.67+ and one Mo6+ atom to form distorted OSm3Mo tetrahedra that share corners with four OSm4 tetrahedra, edges with two OSm4 tetrahedra, and edges with two OSm3Mo trigonal pyramids. In the fifteenth O2- site, O2- is bonded to three Sm+2.67+ and one Mo6+ atom to form distorted OSm3Mo tetrahedra that share corners with four OSm4 tetrahedra, edges with two OSm4 tetrahedra, and edges with two OSm3Mo trigonal pyramids. In the sixteenth O2- site, O2- is bonded to three Sm+2.67+ and one Mo6+ atom to form distorted OSm3Mo tetrahedra that share corners with four OSm4 tetrahedra, edges with two OSm4 tetrahedra, and edges with two OSm3Mo trigonal pyramids. In the seventeenth O2- site, O2- is bonded in a 4-coordinate geometry to three Sm+2.67+ and one Mo6+ atom. In the eighteenth O2- site, O2- is bonded in a 4-coordinate geometry to three Sm+2.67+ and one Mo6+ atom. In the nineteenth O2- site, O2- is bonded to three Sm+2.67+ and one Mo6+ atom to form a mixture of distorted edge

36 MATERIALS SCIENCE↗