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At least 361 records · Page 20
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on MgTe(BrO)6 by Materials Project

(Mg(OBr)6)3MgO5Br4(Te)4BrOBr crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one hydrobromic acid molecule, one hypobromous acid molecule, four tellurium molecules, three Mg(OBr)6 clusters, and one MgO5Br4 cluster. In each Mg(OBr)6 cluster, Mg2+ is bonded in an octahedral geometry to six O2- atoms. There are a spread of Mg–O bond distances ranging from 2.12–2.14 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to one Mg2+ and one Br1+ atom. The O–Br bond length is 1.76 Å. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to one Mg2+ and one Br1+ atom. The O–Br bond length is 1.76 Å. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to one Mg2+ and one Br1+ atom. The O–Br bond length is 1.76 Å. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one Mg2+ and one Br1+ atom. The O–Br bond length is 1.75 Å. In the fifth O2- site, O2- is bonded in a bent 120 degrees geometry to one Mg2+ and one Br1+ atom. The O–Br bond length is 1.76 Å. In the sixth O2- site, O2- is bonded in a bent 120 degrees geometry to one Mg2+ and one Br1+ atom. The O–Br bond length is 1.75 Å. There are five inequivalent Br1+ sites. In the first Br1+ site, Br1+ is bonded in a single-bond geometry to one O2- atom. In the second Br1+ site, Br1+ is bonded in a single-bond geometry to one O2- atom. In the third Br1+ site, Br1+ is bonded in a single-bond geometry to one O2- atom. In the fourth Br1+ site, Br1+ is bonded in a single-bond geometry to one O2- atom. In the fifth Br1+ site, Br1+ is bonded in a single-bond geometry to one O2- atom. In the MgO5Br4 cluster, Mg2+ is bonded in a distorted square pyramidal geometry to five O2- atoms. There are a spread of Mg–O bond distances ranging from 2.04–2.15 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one Mg2+ atom. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to one Mg2+ and one Br1+ atom. The O–Br bond length is 1.77 Å. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to one Mg2+ and one Br1+ atom. The O–Br bond length is 1.76 Å. In the fourth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Mg2+ and one Br1+ atom. The O–Br bond length is 1.77 Å. In the fifth O2- site, O2- is bonded in a bent 120 degrees geometry to one Mg2+ and one Br1+ atom. The O–Br bond length is 1.76 Å. There are four inequivalent Br1+ sites. In the first Br1+ site, Br1+ is bonded in a single-bond geometry to one O2- atom. In the second Br1+ site, Br1+ is bonded in a single-bond geometry to one O2- atom. In the third Br1+ site, Br1+ is bonded in a single-bond geometry to one O2- atom. In the fourth Br1+ site, Br1+ is bonded in a single-bond geometry to one O2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2022

The reaction between the bromine atom and the water trimer: high level theoretical studies

Three different reaction pathways are found for the reaction of bromine atom (Br) with the lowest-energy structure of the water trimer [uud-(H 2 O) 3 ], initially using the MPW1K-DFT method. The three bromine pathways have closely related geometries and energetics, analogous to those found for the fluorine and chlorine reactions. Here, the lowest-energy pathway of the Br + uud-(H 2 O) 3 reaction was further investigated using the “gold standard” CCSD(T) method and the correlation-consistent basis sets up to cc-pVQZ(-PP). Based on the CCSD(T)/cc-pVQZ(-PP)//CCSD(T)/cc-pVTZ(-PP) results, the Br + (H 2 O) 3 reaction is endothermic by 33.3 kcal mol -1 . The classical barrier height is 29.0 kcal mol -1 between the reactants and the exit complex, and there is no barrier for the reverse reaction. The Br···(H 2 O) 3 entrance complex is found to lie 4.7 kcal mol -1 below the separated reactants, and the HBr···(H 2 O) 2 OH exit complex is bound by 6.4 kcal mol -1 relative to the separated products. This potential energy profile is further corrected by the zero point energies and spin–orbit coupling effects. Structurally, the Br + (H 2 O) 3 stationary points can be derived from those of the simpler Br + (H 2 O) 2 reaction by judiciously appending a H 2 O molecule. The Br + (H 2 O) 3 potential energy profile is compared with the Br + (H 2 O) 2 and Br + H 2 O reactions, as well as to the valence isoelectronic Cl + (H 2 O) 3 and F + (H 2 O) 3 systems. It is reasonable to expect that the reactions between the bromine atom and larger water clusters would be similar to the Br + (H 2 O) 3 reaction.

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗
NASA NTRS2001

Comparison of a space shuttle flight (STS-78) and bed rest on human muscle function

The purpose of this investigation was to assess muscle fiber size, composition, and in vivo contractile characteristics of the calf muscle of four male crew members during a 17-day spaceflight (SF; Life and Microgravity Sciences Spacelab Shuttle Transport System-78 mission) and eight men during a 17-day bed rest (BR). The protocols and timelines of these two investigations were identical, therefore allowing for direct comparisons between SF and the BR. The subjects' age, height, and weight were 43 +/- 2 yr, 183 +/- 4 cm, and 86 +/- 3 kg for SF and 43 +/- 2 yr, 182 +/- 3 cm, and 82 +/- 4 kg for BR, respectively. Calf muscle strength was examined before SF and BR; on days 2, 8, and 12 during SF and BR; and on days 2 and 8 of recovery. Muscle biopsies were obtained before and within 3 h after SF (gastrocnemius and soleus) and BR (soleus) before reloading. Maximal isometric calf strength and the force-velocity characteristics were unchanged with SF or BR. Additionally, neither SF nor BR had any effect on fiber composition or fiber size of the calf muscles studied. In summary, no changes in calf muscle strength and morphology were observed after the 17-day SF and BR. Because muscle strength is lost during unloading, both during spaceflight and on the ground, these data suggest that the testing sequence employed during the SF and BR may have served as a resistance training countermeasure to attenuate whole muscle strength loss.

Non-NASA Center↗
NASA NTRS2011

Muscle Adaptations Following Short-Duration Bed Rest with Integrated Resistance, Interval, and Aerobic Exercise

Unloading of the musculoskeletal system during space flight results in deconditioning that may impair mission-related task performance in astronauts. Exercise countermeasures have been frequently tested during bed rest (BR) and limb suspension; however, high-intensity, short-duration exercise prescriptions have not been fully explored. PURPOSE: To determine if a high intensity resistance, interval, and aerobic exercise program could protect against muscle atrophy and dysfunction when performed during short duration BR. METHODS: Nine subjects (1 female, 8 male) performed a combination of supine exercises during 2 weeks of horizontal BR. Resistance exercise (3 d / wk) consisted of squat, leg press, hamstring curl, and heel raise exercises (3 sets, 12 repetitions). Aerobic (6 d / wk) sessions alternated continuous (75% VO2 peak) and interval exercise (30 s, 2 min, and 4 min) and were completed on a supine cycle ergometer and vertical treadmill, respectively. Muscle volumes of the upper leg were calculated pre, mid, and post-BR using magnetic resonance imaging. Maximal isometric force (MIF), rate of force development (RFD), and peak power of the lower body extensors were measured twice before BR (averaged to represent pre) and once post BR. ANOVA with repeated measures and a priori planned contrasts were used to test for differences. RESULTS: There were no changes to quadriceps, hamstring, and adductor muscle volumes at mid and post BR time points compared to pre BR (Table 1). Peak power increased significantly from 1614 +/- 372 W to 1739 +/- 359 W post BR (+7.7%, p = 0.035). Neither MIF (pre: 1676 +/- 320 N vs. post: 1711 +/- 250 N, +2.1%, p = 0.333) nor RFD (pre: 7534 +/- 1265 N/ms vs. post: 6951 +/- 1241 N/ms, -7.7%, p = 0.136) were significantly impaired post BR.

Hackney, Kyle J.↗
NASA NTRS2011

Gradient Compression Stockings may Prevent Recovery after Bed Rest Deconditioning

Introduction: Astronauts continue to wear a compression garment during and immediately after landing to prevent orthostatic intolerance (OI). We recently developed a custom-fitted, 3-piece garment that consists of thigh-high stockings with biker-style shorts that provides continuous, gradient compression: 55 mmHg at the ankle that decreases to approximately 20 mmHg at the top of the leg and 15 mmHg over the abdomen. This garment has been shown to be effective in preventing symptoms of OI during a short stand test after Space Shuttle missions, but symptoms may persist for several days after a long-duration mission in some astronauts. The purpose of this study was to confirm the effectiveness of wearing these elastic, gradient compression garments during orthostatic testing after 2 weeks of 6 degree head-down tilt bed rest as a model of spaceflight and to determine whether they would impact recovery after bed rest. Methods: Eight (5 treatment, 3 control) of 16 subjects have completed this study to-date. All subjects wore the 3-piece garment from waking until tilt testing (~3 h) as a simulation of the timeline for astronauts on landing day (BR+0). Control subjects removed the garment after the tilt test. Treatment subjects wore the garment for the remainder of the day and wore lower compression thigh-high only garments on the day after bed rest (BR+1). Blood pressure, heart rate, and stroke volume responses to a 15-min 80 degree head-up tilt test were determined before 2 weeks of 6 degree head-down tilt, and on BR+0 and BR+1. Plasma volume (PV) was measured before each of these test sessions. Data are mean SE. Results: Compression garments prevented signs of OI on BR+0; all subjects in both groups completed the full 15-min test. Heart rate responses to tilt were lower on BR+0 than all other test days. Control subjects demonstrated a marginal PV decrease after bed rest, but showed typical recovery the day after bed rest (BR+0: 2.32 plus or minus 0.15 L to BR+1: 2.79 plus or minus 0.15 L). Treatment subjects did not recover PV the day after bed rest (BR+0: 2.61 plus or minus 0.23 L to BR+1: 2.61 plus or minus 0.23 L). Conclusion: Abdomen-high compression garments, which are effective in preventing post-bed rest orthostatic intolerance, may slow recovery of PV. Modified garments with reduced compression may be necessary to prevent prolonging recovery.

Stenger, Michael B.↗
DOE OSTI2020

Materials Data on Te2Br by Materials Project

Te2Br crystallizes in the orthorhombic Pnma space group. The structure is one-dimensional and consists of four Te2Br ribbons oriented in the (1, 0, 0) direction. there are four inequivalent Te sites. In the first Te site, Te is bonded in a distorted T-shaped geometry to three Te atoms. There are two shorter (2.87 Å) and one longer (3.00 Å) Te–Te bond lengths. In the second Te site, Te is bonded in a distorted rectangular see-saw-like geometry to two equivalent Te and two equivalent Br atoms. Both Te–Br bond lengths are 2.98 Å. In the third Te site, Te is bonded in a distorted T-shaped geometry to three Te atoms. Both Te–Te bond lengths are 2.89 Å. In the fourth Te site, Te is bonded in a distorted rectangular see-saw-like geometry to two equivalent Te and two equivalent Br atoms. Both Te–Br bond lengths are 2.92 Å. There are two inequivalent Br sites. In the first Br site, Br is bonded in an L-shaped geometry to two equivalent Te atoms. In the second Br site, Br is bonded in an L-shaped geometry to two equivalent Te atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Bi6Br7 by Materials Project

Bi6Br7 crystallizes in the orthorhombic Pnnm space group. The structure is three-dimensional. there are nine inequivalent Bi+1.17+ sites. In the first Bi+1.17+ site, Bi+1.17+ is bonded in a single-bond geometry to one Br1- atom. The Bi–Br bond length is 3.39 Å. In the second Bi+1.17+ site, Bi+1.17+ is bonded in a 1-coordinate geometry to three Br1- atoms. There are one shorter (3.43 Å) and two longer (3.53 Å) Bi–Br bond lengths. In the third Bi+1.17+ site, Bi+1.17+ is bonded to seven Br1- atoms to form distorted BiBr7 pentagonal bipyramids that share a cornercorner with one BiBr6 octahedra and edges with two equivalent BiBr7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 49°. There are a spread of Bi–Br bond distances ranging from 2.78–3.29 Å. In the fourth Bi+1.17+ site, Bi+1.17+ is bonded in a 1-coordinate geometry to one Br1- atom. The Bi–Br bond length is 3.24 Å. In the fifth Bi+1.17+ site, Bi+1.17+ is bonded to seven Br1- atoms to form edge-sharing BiBr7 pentagonal bipyramids. There are a spread of Bi–Br bond distances ranging from 2.76–3.13 Å. In the sixth Bi+1.17+ site, Bi+1.17+ is bonded to six Br1- atoms to form BiBr6 octahedra that share a cornercorner with one BiBr7 pentagonal bipyramid and an edgeedge with one BiBr6 octahedra. There are a spread of Bi–Br bond distances ranging from 2.78–3.06 Å. In the seventh Bi+1.17+ site, Bi+1.17+ is bonded in a distorted single-bond geometry to one Br1- atom. The Bi–Br bond length is 3.42 Å. In the eighth Bi+1.17+ site, Bi+1.17+ is bonded in a 4-coordinate geometry to four equivalent Br1- atoms. There are two shorter (3.60 Å) and two longer (3.63 Å) Bi–Br bond lengths. In the ninth Bi+1.17+ site, Bi+1.17+ is bonded in a distorted L-shaped geometry to two equivalent Br1- atoms. Both Bi–Br bond lengths are 3.62 Å. There are eleven inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a distorted water-like geometry to four Bi+1.17+ atoms. In the second Br1- site, Br1- is bonded in a 2-coordinate geometry to two Bi+1.17+ atoms. In the third Br1- site, Br1- is bonded in a distorted bent 150 degrees geometry to two Bi+1.17+ atoms. In the fourth Br1- site, Br1- is bonded in an L-shaped geometry to two equivalent Bi+1.17+ atoms. In the fifth Br1- site, Br1- is bonded in a 3-coordinate geometry to three Bi+1.17+ atoms. In the sixth Br1- site, Br1- is bonded in a single-bond geometry to one Bi+1.17+ atom. In the seventh Br1- site, Br1- is bonded in a 3-coordinate geometry to four Bi+1.17+ atoms. In the eighth Br1- site, Br1- is bonded in a distorted single-bond geometry to one Bi+1.17+ atom. In the ninth Br1- site, Br1- is bonded in a single-bond geometry to one Bi+1.17+ atom. In the tenth Br1- site, Br1- is bonded in a single-bond geometry to two Bi+1.17+ atoms. In the eleventh Br1- site, Br1- is bonded in a 3-coordinate geometry to three Bi+1.17+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Y4OsBr4 by Materials Project

Y4OsBr4 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are two inequivalent Y sites. In the first Y site, Y is bonded to two equivalent Os and four Br atoms to form a mixture of distorted edge, face, and corner-sharing YOs2Br4 pentagonal pyramids. There are one shorter (2.91 Å) and one longer (2.92 Å) Y–Os bond lengths. There are a spread of Y–Br bond distances ranging from 2.99–3.19 Å. In the second Y site, Y is bonded to two equivalent Os and four Br atoms to form a mixture of distorted edge, face, and corner-sharing YOs2Br4 pentagonal pyramids. There are one shorter (2.91 Å) and one longer (2.92 Å) Y–Os bond lengths. There are a spread of Y–Br bond distances ranging from 2.97–3.17 Å. Os is bonded in a 8-coordinate geometry to eight Y atoms. There are two inequivalent Br sites. In the first Br site, Br is bonded in a 4-coordinate geometry to four Y atoms. In the second Br site, Br is bonded in a 4-coordinate geometry to four Y atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on La5(AlBr)4 by Materials Project

La5(AlBr)4 crystallizes in the tetragonal I4/mcm space group. The structure is three-dimensional. there are two inequivalent La sites. In the first La site, La is bonded in a distorted linear geometry to eight equivalent Al and two equivalent Br atoms. All La–Al bond lengths are 3.26 Å. Both La–Br bond lengths are 3.16 Å. In the second La site, La is bonded in a 6-coordinate geometry to four equivalent Al and five Br atoms. There are a spread of La–Al bond distances ranging from 3.15–3.37 Å. There are a spread of La–Br bond distances ranging from 3.15–3.45 Å. Al is bonded in a 9-coordinate geometry to six La and three equivalent Al atoms. There are two shorter (2.67 Å) and one longer (2.81 Å) Al–Al bond lengths. There are two inequivalent Br sites. In the first Br site, Br is bonded to six equivalent La atoms to form distorted BrLa6 pentagonal pyramids that share corners with four equivalent BrLa5 square pyramids, edges with four equivalent BrLa6 pentagonal pyramids, edges with four equivalent BrLa5 square pyramids, and a faceface with one BrLa6 pentagonal pyramid. In the second Br site, Br is bonded to five La atoms to form BrLa5 square pyramids that share corners with four equivalent BrLa6 pentagonal pyramids, corners with five equivalent BrLa5 square pyramids, and edges with four equivalent BrLa6 pentagonal pyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SeBr by Materials Project

SeBr crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four selenium bromide (se2br2) molecules. there are two inequivalent Se sites. In the first Se site, Se is bonded in a water-like geometry to one Se and one Br atom. The Se–Se bond length is 2.24 Å. The Se–Br bond length is 2.42 Å. In the second Se site, Se is bonded in a water-like geometry to one Se and one Br atom. The Se–Br bond length is 2.44 Å. There are two inequivalent Br sites. In the first Br site, Br is bonded in a single-bond geometry to one Se atom. In the second Br site, Br is bonded in a single-bond geometry to one Se atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Bi4RuBr2 by Materials Project

RuBi4Br2 crystallizes in the monoclinic C2/m space group. The structure is one-dimensional and consists of two RuBi4Br2 ribbons oriented in the (0, 1, 0) direction. Ru is bonded in a 8-coordinate geometry to one Ru and eight Bi atoms. The Ru–Ru bond length is 2.88 Å. There are a spread of Ru–Bi bond distances ranging from 2.79–2.94 Å. There are four inequivalent Bi sites. In the first Bi site, Bi is bonded in a 2-coordinate geometry to two equivalent Ru and two equivalent Bi atoms. Both Bi–Bi bond lengths are 3.04 Å. In the second Bi site, Bi is bonded in a 2-coordinate geometry to two equivalent Ru and two equivalent Bi atoms. In the third Bi site, Bi is bonded in a 4-coordinate geometry to two equivalent Ru and two Br atoms. There are one shorter (3.01 Å) and one longer (3.03 Å) Bi–Br bond lengths. In the fourth Bi site, Bi is bonded in a 4-coordinate geometry to two equivalent Ru and two Br atoms. There are one shorter (3.01 Å) and one longer (3.04 Å) Bi–Br bond lengths. There are two inequivalent Br sites. In the first Br site, Br is bonded in a 2-coordinate geometry to two Bi atoms. In the second Br site, Br is bonded in a 2-coordinate geometry to two Bi atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ag10Te4Br3 by Materials Project

Ag10Te4Br3 crystallizes in the orthorhombic Cmc2_1 space group. The structure is three-dimensional. there are eleven inequivalent Ag1+ sites. In the first Ag1+ site, Ag1+ is bonded in a 1-coordinate geometry to three Te+1.75- and one Br1- atom. There are a spread of Ag–Te bond distances ranging from 2.86–3.13 Å. The Ag–Br bond length is 2.78 Å. In the second Ag1+ site, Ag1+ is bonded in a 1-coordinate geometry to one Ag1+, two Te+1.75-, and two Br1- atoms. The Ag–Ag bond length is 3.01 Å. There are one shorter (2.81 Å) and one longer (2.85 Å) Ag–Te bond lengths. There are one shorter (2.92 Å) and one longer (3.63 Å) Ag–Br bond lengths. In the third Ag1+ site, Ag1+ is bonded in a 1-coordinate geometry to one Ag1+, three Te+1.75-, and two Br1- atoms. The Ag–Ag bond length is 2.98 Å. There are a spread of Ag–Te bond distances ranging from 2.81–3.20 Å. There are one shorter (2.79 Å) and one longer (3.67 Å) Ag–Br bond lengths. In the fourth Ag1+ site, Ag1+ is bonded in a 2-coordinate geometry to one Ag1+, two Te+1.75-, and two Br1- atoms. The Ag–Ag bond length is 2.95 Å. There are one shorter (2.88 Å) and one longer (2.95 Å) Ag–Te bond lengths. There are one shorter (2.76 Å) and one longer (2.78 Å) Ag–Br bond lengths. In the fifth Ag1+ site, Ag1+ is bonded in a 4-coordinate geometry to two Te+1.75- and two Br1- atoms. There are one shorter (2.82 Å) and one longer (2.84 Å) Ag–Te bond lengths. There are one shorter (2.79 Å) and one longer (2.95 Å) Ag–Br bond lengths. In the sixth Ag1+ site, Ag1+ is bonded in a 4-coordinate geometry to one Ag1+, two Te+1.75-, and two Br1- atoms. The Ag–Ag bond length is 2.94 Å. There are one shorter (2.81 Å) and one longer (2.86 Å) Ag–Te bond lengths. There are one shorter (2.86 Å) and one longer (3.11 Å) Ag–Br bond lengths. In the seventh Ag1+ site, Ag1+ is bonded in a 1-coordinate geometry to one Ag1+, two Te+1.75-, and two Br1- atoms. The Ag–Ag bond length is 2.97 Å. There are one shorter (2.84 Å) and one longer (2.86 Å) Ag–Te bond lengths. There are one shorter (2.75 Å) and one longer (3.28 Å) Ag–Br bond lengths. In the eighth Ag1+ site, Ag1+ is bonded in a 2-coordinate geometry to eight Ag1+ and two Te+1.75- atoms. There are one shorter (2.78 Å) and one longer (2.80 Å) Ag–Te bond lengths. In the ninth Ag1+ site, Ag1+ is bonded in a 1-coordinate geometry to two Te+1.75- and one Br1- atom. There are one shorter (2.80 Å) and one longer (2.89 Å) Ag–Te bond lengths. The Ag–Br bond length is 2.87 Å. In the tenth Ag1+ site, Ag1+ is bonded in a 1-coordinate geometry to three Te+1.75- and one Br1- atom. There are a spread of Ag–Te bond distances ranging from 2.84–3.21 Å. The Ag–Br bond length is 2.93 Å. In the eleventh Ag1+ site, Ag1+ is bonded in a 2-coordinate geometry to two equivalent Te+1.75- atoms. Both Ag–Te bond lengths are 2.83 Å. There are six inequivalent Te+1.75- sites. In the first Te+1.75- site, Te+1.75- is bonded in a 5-coordinate geometry to five Ag1+ atoms. In the second Te+1.75- site, Te+1.75- is bonded in a 8-coordinate geometry to eight Ag1+ atoms. In the third Te+1.75- site, Te+1.75- is bonded in a 5-coordinate geometry to four Ag1+ and one Te+1.75- atom. The Te–Te bond length is 2.87 Å. In the fourth Te+1.75- site, Te+1.75- is bonded in a 6-coordinate geometry to six Ag1+ atoms. In the fifth Te+1.75- site, Te+1.75- is bonded in a 6-coordinate geometry to six Ag1+ atoms. In the sixth Te+1.75- site, Te+1.75- is bonded in a 9-coordinate geometry to seven Ag1+ atoms. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a distorted rectangular see-saw-like geometry to four Ag1+ atoms. In the second Br1- site, Br1- is bonded in a 4-coordinate geometry to seven Ag1+ atoms. In the third Br1- site, Br1- is bonded in a 4-coordinate geometry to four Ag1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CuTeBr by Materials Project

CuBrTe crystallizes in the orthorhombic Fddd space group. The structure is three-dimensional. there are six inequivalent Cu2+ sites. In the first Cu2+ site, Cu2+ is bonded to four Br1- atoms to form edge-sharing CuBr4 tetrahedra. All Cu–Br bond lengths are 2.49 Å. In the second Cu2+ site, Cu2+ is bonded to four Br1- atoms to form CuBr4 tetrahedra that share corners with four CuTe2Br2 tetrahedra and edges with two CuBr4 tetrahedra. There are two shorter (2.49 Å) and two longer (2.50 Å) Cu–Br bond lengths. In the third Cu2+ site, Cu2+ is bonded to two Te1- and two Br1- atoms to form a mixture of edge and corner-sharing CuTe2Br2 tetrahedra. Both Cu–Te bond lengths are 2.54 Å. There are one shorter (2.53 Å) and one longer (2.55 Å) Cu–Br bond lengths. In the fourth Cu2+ site, Cu2+ is bonded to four equivalent Br1- atoms to form CuBr4 tetrahedra that share corners with four equivalent CuTe2Br2 tetrahedra and edges with two equivalent CuBr4 tetrahedra. All Cu–Br bond lengths are 2.49 Å. In the fifth Cu2+ site, Cu2+ is bonded to two equivalent Te1- and two equivalent Br1- atoms to form a mixture of edge and corner-sharing CuTe2Br2 tetrahedra. Both Cu–Te bond lengths are 2.54 Å. Both Cu–Br bond lengths are 2.54 Å. In the sixth Cu2+ site, Cu2+ is bonded to four equivalent Br1- atoms to form edge-sharing CuBr4 tetrahedra. All Cu–Br bond lengths are 2.49 Å. There are three inequivalent Te1- sites. In the first Te1- site, Te1- is bonded in a 1-coordinate geometry to one Cu2+, two Te1-, and two Br1- atoms. There are one shorter (2.80 Å) and one longer (2.89 Å) Te–Te bond lengths. There are one shorter (3.56 Å) and one longer (3.58 Å) Te–Br bond lengths. In the second Te1- site, Te1- is bonded in a 1-coordinate geometry to one Cu2+, two Te1-, and two Br1- atoms. There are one shorter (2.80 Å) and one longer (2.89 Å) Te–Te bond lengths. Both Te–Br bond lengths are 3.59 Å. In the third Te1- site, Te1- is bonded in a 1-coordinate geometry to one Cu2+, two Te1-, and two equivalent Br1- atoms. There are one shorter (3.57 Å) and one longer (3.62 Å) Te–Br bond lengths. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 3-coordinate geometry to three Cu2+ and two equivalent Te1- atoms. In the second Br1- site, Br1- is bonded in a 3-coordinate geometry to three Cu2+ and two Te1- atoms. In the third Br1- site, Br1- is bonded in a 3-coordinate geometry to three Cu2+ and two Te1- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on La10Al5Br4 by Materials Project

La10Al5Br4 crystallizes in the tetragonal I4/mcm space group. The structure is three-dimensional. there are three inequivalent La sites. In the first La site, La is bonded in a 1-coordinate geometry to five Al and one Br atom. There are one shorter (3.26 Å) and four longer (3.35 Å) La–Al bond lengths. The La–Br bond length is 3.22 Å. In the second La site, La is bonded in a 8-coordinate geometry to three equivalent Al and five Br atoms. There are one shorter (3.23 Å) and two longer (3.24 Å) La–Al bond lengths. There are a spread of La–Br bond distances ranging from 3.11–3.54 Å. In the third La site, La is bonded to five Al atoms to form a mixture of distorted corner and edge-sharing LaAl5 trigonal bipyramids. There are a spread of La–Al bond distances ranging from 3.33–3.45 Å. There are two inequivalent Al sites. In the first Al site, Al is bonded in a 9-coordinate geometry to eight La and one Al atom. The Al–Al bond length is 2.79 Å. In the second Al site, Al is bonded in a distorted q6 geometry to ten La atoms. There are two inequivalent Br sites. In the first Br site, Br is bonded in a 6-coordinate geometry to six equivalent La atoms. In the second Br site, Br is bonded to five La atoms to form corner-sharing BrLa5 square pyramids.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs3Au2Br11 by Materials Project

Cs3Au2Br11 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are three inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 11-coordinate geometry to eleven Br1- atoms. There are a spread of Cs–Br bond distances ranging from 3.77–4.25 Å. In the second Cs1+ site, Cs1+ is bonded in a 10-coordinate geometry to ten Br1- atoms. There are a spread of Cs–Br bond distances ranging from 3.72–4.18 Å. In the third Cs1+ site, Cs1+ is bonded in a 10-coordinate geometry to ten Br1- atoms. There are a spread of Cs–Br bond distances ranging from 3.72–4.23 Å. There are two inequivalent Au4+ sites. In the first Au4+ site, Au4+ is bonded in a rectangular see-saw-like geometry to four Br1- atoms. All Au–Br bond lengths are 2.48 Å. In the second Au4+ site, Au4+ is bonded in a rectangular see-saw-like geometry to four Br1- atoms. There are a spread of Au–Br bond distances ranging from 2.47–2.49 Å. There are eleven inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 1-coordinate geometry to three Cs1+ and one Au4+ atom. In the second Br1- site, Br1- is bonded in a 4-coordinate geometry to three Cs1+ and one Br1- atom. The Br–Br bond length is 2.58 Å. In the third Br1- site, Br1- is bonded in a 1-coordinate geometry to three Cs1+ and one Au4+ atom. In the fourth Br1- site, Br1- is bonded in a 3-coordinate geometry to two Cs1+ and one Br1- atom. The Br–Br bond length is 2.59 Å. In the fifth Br1- site, Br1- is bonded in a 1-coordinate geometry to three Cs1+ and one Au4+ atom. In the sixth Br1- site, Br1- is bonded in a 4-coordinate geometry to three Cs1+ and one Au4+ atom. In the seventh Br1- site, Br1- is bonded to three Cs1+ and one Au4+ atom to form distorted edge-sharing BrCs3Au tetrahedra. In the eighth Br1- site, Br1- is bonded in a 4-coordinate geometry to three equivalent Cs1+ and one Au4+ atom. In the ninth Br1- site, Br1- is bonded in a 1-coordinate geometry to four Cs1+ and one Au4+ atom. In the tenth Br1- site, Br1- is bonded in a distorted T-shaped geometry to two Cs1+ and one Au4+ atom. In the eleventh Br1- site, Br1- is bonded in a 4-coordinate geometry to two equivalent Cs1+ and two Br1- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on H5BrO2 by Materials Project

(H2O)2HBr crystallizes in the triclinic P1 space group. The structure is two-dimensional and consists of one (H2O)2HBr sheet oriented in the (-1, 2, 0) direction. there are twenty inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- and one Br1- atom. The H–O bond length is 1.01 Å. The H–Br bond length is 2.18 Å. In the second H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.08 Å) and one longer (1.42 Å) H–O bond length. In the third H1+ site, H1+ is bonded in a single-bond geometry to one O2- and one Br1- atom. The H–O bond length is 1.02 Å. The H–Br bond length is 2.10 Å. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one O2- and one Br1- atom. The H–O bond length is 1.01 Å. The H–Br bond length is 2.15 Å. In the fifth H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.10 Å) and one longer (1.36 Å) H–O bond length. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one O2- and one Br1- atom. The H–O bond length is 1.01 Å. The H–Br bond length is 2.17 Å. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one O2- and one Br1- atom. The H–O bond length is 1.03 Å. The H–Br bond length is 2.09 Å. In the eighth H1+ site, H1+ is bonded in a single-bond geometry to one O2- and one Br1- atom. The H–O bond length is 1.01 Å. The H–Br bond length is 2.17 Å. In the ninth H1+ site, H1+ is bonded in a single-bond geometry to one O2- and one Br1- atom. The H–O bond length is 1.01 Å. The H–Br bond length is 2.23 Å. In the tenth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.01 Å. In the eleventh H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the twelfth H1+ site, H1+ is bonded in a single-bond geometry to one O2- and one Br1- atom. The H–O bond length is 1.01 Å. The H–Br bond length is 2.20 Å. In the thirteenth 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 fourteenth 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 fifteenth H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.11 Å) and one longer (1.34 Å) H–O bond length. In the sixteenth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.97 Å. In the seventeenth 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 eighteenth 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 nineteenth H1+ site, H1+ is bonded in a single-bond geometry to one O2- and one Br1- atom. The H–O bond length is 1.00 Å. The H–Br bond length is 2.26 Å. In the twentieth H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.16 Å) and one longer (1.26 Å) H–O bond length. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal non-coplanar geometry to three H1+ atoms. In the second O2- site, O2- is bonded in a trigonal non-coplanar geometry to three H1+ atoms. In the third O2- site, O2- is bonded in a trigonal non-coplanar geometry to three H1+ atoms. In the fourth O2- site, O2- is bonded in a trigonal non-coplanar geometry to three H1+ atoms. In the fifth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three H1+ atoms. In the sixth O2- site, O2- is bonded in a trigonal planar geometry to three H1+ atoms. In the seventh O2- site, O2- is bonded in a distorted trigonal planar geometry to three H1+ atoms. In the eighth O2- site, O2- is bonded in a trigonal planar geometry to three H1+ atoms. There are four inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 2-coordinate geometry to two H1+ atoms. In the second Br1- site, Br1- is bonded in a distorted trigonal non-coplanar geometry to three H1+ atoms. In the third Br1- site, Br1- is bonded in a 2-coordinate geometry to three H1+ atoms. In the fourth Br1- site, Br1- is bonded in a 1-coordinate geometry to one H1+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Zr2HBr2 by Materials Project

Zr2HBr2 crystallizes in the monoclinic C2/m space group. The structure is two-dimensional and consists of two Zr2HBr2 sheets oriented in the (1, 0, 0) direction. there are two inequivalent Zr sites. In the first Zr site, Zr is bonded in a 4-coordinate geometry to one H and three Br atoms. The Zr–H bond length is 2.20 Å. There are one shorter (2.74 Å) and two longer (2.81 Å) Zr–Br bond lengths. In the second Zr site, Zr is bonded in a 6-coordinate geometry to three equivalent H and three Br atoms. There are two shorter (2.09 Å) and one longer (2.10 Å) Zr–H bond lengths. There are one shorter (2.74 Å) and two longer (2.75 Å) Zr–Br bond lengths. H is bonded to four Zr atoms to form a mixture of edge and corner-sharing HZr4 tetrahedra. There are two inequivalent Br sites. In the first Br site, Br is bonded in a 3-coordinate geometry to three Zr atoms. In the second Br site, Br is bonded in a 3-coordinate geometry to three Zr atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Te2Mo3Se7Br10 by Materials Project

Mo3Te2Se7Br10 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are three inequivalent Mo+5.33+ sites. In the first Mo+5.33+ site, Mo+5.33+ is bonded to five Se2- and one Br1- atom to form distorted face-sharing MoSe5Br pentagonal pyramids. There are a spread of Mo–Se bond distances ranging from 2.48–2.65 Å. The Mo–Br bond length is 2.69 Å. In the second Mo+5.33+ site, Mo+5.33+ is bonded to five Se2- and two equivalent Br1- atoms to form distorted MoSe5Br2 pentagonal bipyramids that share an edgeedge with one MoSe5Br2 pentagonal bipyramid, a faceface with one MoSe5Br2 pentagonal bipyramid, and a faceface with one MoSe5Br pentagonal pyramid. There are a spread of Mo–Se bond distances ranging from 2.50–2.65 Å. There are one shorter (2.68 Å) and one longer (2.73 Å) Mo–Br bond lengths. In the third Mo+5.33+ site, Mo+5.33+ is bonded to five Se2- and two equivalent Br1- atoms to form distorted MoSe5Br2 pentagonal bipyramids that share an edgeedge with one MoSe5Br2 pentagonal bipyramid, a faceface with one MoSe5Br2 pentagonal bipyramid, and a faceface with one MoSe5Br pentagonal pyramid. There are a spread of Mo–Se bond distances ranging from 2.50–2.65 Å. There are one shorter (2.68 Å) and one longer (2.74 Å) Mo–Br bond lengths. There are two inequivalent Te4+ sites. In the first Te4+ site, Te4+ is bonded in a distorted T-shaped geometry to three Br1- atoms. There are a spread of Te–Br bond distances ranging from 2.53–2.88 Å. In the second Te4+ site, Te4+ is bonded to six Br1- atoms to form edge-sharing TeBr6 octahedra. There are a spread of Te–Br bond distances ranging from 2.57–2.99 Å. There are seven inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 10-coordinate geometry to two Mo+5.33+ and one Br1- atom. The Se–Br bond length is 3.27 Å. In the second Se2- site, Se2- is bonded in a 7-coordinate geometry to two Mo+5.33+, one Se2-, and four Br1- atoms. The Se–Se bond length is 2.34 Å. There are a spread of Se–Br bond distances ranging from 3.10–3.96 Å. In the third Se2- site, Se2- is bonded in a 4-coordinate geometry to two Mo+5.33+ atoms. In the fourth Se2- site, Se2- is bonded in a 7-coordinate geometry to three Mo+5.33+ atoms. In the fifth Se2- site, Se2- is bonded in a 4-coordinate geometry to two Mo+5.33+, one Se2-, and one Br1- atom. The Se–Se bond length is 2.34 Å. The Se–Br bond length is 3.18 Å. In the sixth Se2- site, Se2- is bonded in a 4-coordinate geometry to two Mo+5.33+, one Se2-, and one Br1- atom. The Se–Br bond length is 3.58 Å. In the seventh Se2- site, Se2- is bonded in a 4-coordinate geometry to two Mo+5.33+ and one Se2- atom. There are ten inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a single-bond geometry to one Te4+ atom. In the second Br1- site, Br1- is bonded in a distorted water-like geometry to two equivalent Mo+5.33+ and one Se2- atom. In the third Br1- site, Br1- is bonded in a distorted water-like geometry to two equivalent Mo+5.33+ and one Se2- atom. In the fourth Br1- site, Br1- is bonded in a distorted water-like geometry to two equivalent Te4+ atoms. In the fifth Br1- site, Br1- is bonded in a 1-coordinate geometry to one Mo+5.33+ and one Te4+ atom. In the sixth Br1- site, Br1- is bonded in a single-bond geometry to one Te4+ atom. In the seventh Br1- site, Br1- is bonded in a 4-coordinate geometry to one Te4+ and three Se2- atoms. In the eighth Br1- site, Br1- is bonded in a distorted single-bond geometry to one Te4+ and one Se2- atom. In the ninth Br1- site, Br1- is bonded in a distorted single-bond geometry to one Te4+ atom. In the tenth Br1- site, Br1- is bonded in a distorted single-bond geometry to one Te4+ and one Se2- atom.

36 MATERIALS SCIENCE↗