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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Ta3(OF)5 by Materials Project

Ta3(OF)5 crystallizes in the orthorhombic Immm space group. The structure is two-dimensional and consists of two Ta3(OF)5 sheets oriented in the (0, 0, 1) direction. there are two inequivalent Ta5+ sites. In the first Ta5+ site, Ta5+ is bonded to four O2- and two equivalent F1- atoms to form corner-sharing TaO4F2 octahedra. The corner-sharing octahedral tilt angles are 0°. There is two shorter (1.94 Å) and two longer (2.01 Å) Ta–O bond length. Both Ta–F bond lengths are 1.97 Å. In the second Ta5+ site, Ta5+ is bonded to three O2- and three F1- atoms to form corner-sharing TaO3F3 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. There is one shorter (1.94 Å) and two longer (1.97 Å) Ta–O bond length. There is one shorter (1.91 Å) and two longer (2.01 Å) Ta–F bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a linear geometry to two equivalent Ta5+ atoms. In the second O2- site, O2- is bonded in a linear geometry to two equivalent Ta5+ atoms. In the third O2- site, O2- is bonded in a linear geometry to two Ta5+ atoms. There are three inequivalent F1- sites. In the first F1- site, F1- is bonded in a linear geometry to two equivalent Ta5+ atoms. In the second F1- site, F1- is bonded in a single-bond geometry to one Ta5+ atom. In the third F1- site, F1- is bonded in a linear geometry to two equivalent Ta5+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TaP4(SCl)5 by Materials Project

TaP4(SCl)5 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two TaP4(SCl)5 clusters. Ta3+ is bonded in a distorted octahedral geometry to one S2- and five Cl1- atoms. The Ta–S bond length is 2.73 Å. There are a spread of Ta–Cl bond distances ranging from 2.29–2.37 Å. There are four inequivalent P3+ sites. In the first P3+ site, P3+ is bonded in a trigonal non-coplanar geometry to three S2- atoms. There are a spread of P–S bond distances ranging from 1.99–2.11 Å. In the second P3+ site, P3+ is bonded in a trigonal non-coplanar geometry to three S2- atoms. There are a spread of P–S bond distances ranging from 2.13–2.16 Å. In the third P3+ site, P3+ is bonded in a single-bond geometry to one S2- atom. The P–S bond length is 2.06 Å. In the fourth P3+ site, P3+ is bonded in a water-like geometry to two S2- atoms. There are one shorter (2.13 Å) and one longer (2.17 Å) P–S bond lengths. There are five inequivalent S2- sites. In the first S2- site, S2- is bonded in a water-like geometry to two P3+ atoms. In the second S2- site, S2- is bonded in a water-like geometry to two P3+ atoms. In the third S2- site, S2- is bonded in a 2-coordinate geometry to one Ta3+ and one P3+ atom. In the fourth S2- site, S2- is bonded in a distorted L-shaped geometry to two P3+ atoms. In the fifth S2- site, S2- is bonded in a water-like geometry to two P3+ atoms. There are five inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a single-bond geometry to one Ta3+ atom. In the second Cl1- site, Cl1- is bonded in a single-bond geometry to one Ta3+ atom. In the third Cl1- site, Cl1- is bonded in a single-bond geometry to one Ta3+ atom. In the fourth Cl1- site, Cl1- is bonded in a single-bond geometry to one Ta3+ atom. In the fifth Cl1- site, Cl1- is bonded in a single-bond geometry to one Ta3+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ta2Se3 by Materials Project

Ta2Se3 is Orthorhombic Perovskite-derived structured and crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. there are two inequivalent Ta3+ sites. In the first Ta3+ site, Ta3+ is bonded to six Se2- atoms to form edge-sharing TaSe6 octahedra. There are a spread of Ta–Se bond distances ranging from 2.53–2.75 Å. In the second Ta3+ site, Ta3+ is bonded in a 6-coordinate geometry to six Se2- atoms. There are a spread of Ta–Se bond distances ranging from 2.58–3.03 Å. There are three inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 3-coordinate geometry to three equivalent Ta3+ atoms. In the second Se2- site, Se2- is bonded in a 5-coordinate geometry to five Ta3+ atoms. In the third Se2- site, Se2- is bonded in a 4-coordinate geometry to four Ta3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ta2Ni3Te5 by Materials Project

Ta2Ni3Te5 crystallizes in the orthorhombic Pnma space group. The structure is two-dimensional and consists of two Ta2Ni3Te5 sheets oriented in the (0, 1, 0) direction. there are two inequivalent Ta3+ sites. In the first Ta3+ site, Ta3+ is bonded to five Te2- atoms to form TaTe5 square pyramids that share a cornercorner with one TaTe5 square pyramid, corners with two equivalent NiTe4 tetrahedra, edges with two equivalent TaTe5 square pyramids, and edges with five NiTe4 tetrahedra. There are a spread of Ta–Te bond distances ranging from 2.78–2.90 Å. In the second Ta3+ site, Ta3+ is bonded to five Te2- atoms to form TaTe5 square pyramids that share a cornercorner with one TaTe5 square pyramid, corners with two equivalent NiTe4 tetrahedra, edges with two equivalent TaTe5 square pyramids, and edges with five NiTe4 tetrahedra. There are a spread of Ta–Te bond distances ranging from 2.78–2.91 Å. There are three inequivalent Ni+1.33+ sites. In the first Ni+1.33+ site, Ni+1.33+ is bonded to four Te2- atoms to form NiTe4 tetrahedra that share corners with two equivalent TaTe5 square pyramids, corners with three NiTe4 tetrahedra, edges with three TaTe5 square pyramids, and edges with two equivalent NiTe4 tetrahedra. There are a spread of Ni–Te bond distances ranging from 2.59–2.75 Å. In the second Ni+1.33+ site, Ni+1.33+ is bonded to four Te2- atoms to form distorted NiTe4 tetrahedra that share corners with four NiTe4 tetrahedra and edges with four TaTe5 square pyramids. There are two shorter (2.55 Å) and two longer (2.58 Å) Ni–Te bond lengths. In the third Ni+1.33+ site, Ni+1.33+ is bonded to four Te2- atoms to form NiTe4 tetrahedra that share corners with two equivalent TaTe5 square pyramids, corners with three NiTe4 tetrahedra, edges with three TaTe5 square pyramids, and edges with two equivalent NiTe4 tetrahedra. There are a spread of Ni–Te bond distances ranging from 2.59–2.77 Å. There are five inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 5-coordinate geometry to two equivalent Ta3+ and three Ni+1.33+ atoms. In the second Te2- site, Te2- is bonded in a 4-coordinate geometry to two equivalent Ta3+ and two Ni+1.33+ atoms. In the third Te2- site, Te2- is bonded in a 4-coordinate geometry to two equivalent Ta3+ and two Ni+1.33+ atoms. In the fourth Te2- site, Te2- is bonded in a 4-coordinate geometry to two Ta3+ and two equivalent Ni+1.33+ atoms. In the fifth Te2- site, Te2- is bonded in a 5-coordinate geometry to two equivalent Ta3+ and three Ni+1.33+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TaNi2Te3 by Materials Project

TaNi2Te3 crystallizes in the monoclinic P2_1/m space group. The structure is two-dimensional and consists of one TaNi2Te3 sheet oriented in the (-1, 0, 1) direction. Ta3+ is bonded to five Te2- atoms to form distorted TaTe5 square pyramids that share corners with three NiTe4 tetrahedra, edges with two equivalent TaTe5 square pyramids, and edges with five NiTe4 tetrahedra. There are a spread of Ta–Te bond distances ranging from 2.74–2.91 Å. There are two inequivalent Ni+1.50+ sites. In the first Ni+1.50+ site, Ni+1.50+ is bonded to four Te2- atoms to form distorted NiTe4 tetrahedra that share a cornercorner with one TaTe5 square pyramid, corners with three NiTe4 tetrahedra, edges with two equivalent TaTe5 square pyramids, and edges with two equivalent NiTe4 tetrahedra. There are a spread of Ni–Te bond distances ranging from 2.53–2.59 Å. In the second Ni+1.50+ site, Ni+1.50+ is bonded to four Te2- atoms to form NiTe4 tetrahedra that share corners with two equivalent TaTe5 square pyramids, corners with three NiTe4 tetrahedra, edges with three equivalent TaTe5 square pyramids, and edges with two equivalent NiTe4 tetrahedra. There are a spread of Ni–Te bond distances ranging from 2.56–2.74 Å. There are three inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 4-coordinate geometry to two equivalent Ta3+ and two Ni+1.50+ atoms. In the second Te2- site, Te2- is bonded in a 4-coordinate geometry to one Ta3+ and three equivalent Ni+1.50+ atoms. In the third Te2- site, Te2- is bonded in a 5-coordinate geometry to two equivalent Ta3+ and three equivalent Ni+1.50+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TaCoTe2 by Materials Project

TaCoTe2 crystallizes in the monoclinic P2_1/c space group. The structure is two-dimensional and consists of one TaCoTe2 sheet oriented in the (0, 0, 1) direction. Ta3+ is bonded to five Te2- atoms to form a mixture of distorted edge and corner-sharing TaTe5 trigonal bipyramids. There are a spread of Ta–Te bond distances ranging from 2.82–2.95 Å. Co1+ is bonded in a rectangular see-saw-like geometry to four Te2- atoms. There are a spread of Co–Te bond distances ranging from 2.55–2.67 Å. There are two inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 5-coordinate geometry to three equivalent Ta3+ and two equivalent Co1+ atoms. In the second Te2- site, Te2- is bonded in a 4-coordinate geometry to two equivalent Ta3+ and two equivalent Co1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TaTe4I by Materials Project

TaTe4I crystallizes in the triclinic P-1 space group. The structure is three-dimensional. Ta3+ is bonded in a distorted single-bond geometry to three Te+0.50- atoms. There are a spread of Ta–Te bond distances ranging from 1.64–3.50 Å. There are four inequivalent Te+0.50- sites. In the first Te+0.50- site, Te+0.50- is bonded in a distorted single-bond geometry to one Ta3+ atom. In the second Te+0.50- site, Te+0.50- is bonded in a 4-coordinate geometry to three Te+0.50- and one I1- atom. There are a spread of Te–Te bond distances ranging from 2.83–3.06 Å. The Te–I bond length is 3.59 Å. In the third Te+0.50- site, Te+0.50- is bonded in a distorted single-bond geometry to two Te+0.50- and one I1- atom. The Te–Te bond length is 2.20 Å. The Te–I bond length is 2.35 Å. In the fourth Te+0.50- site, Te+0.50- is bonded in a 5-coordinate geometry to two equivalent Ta3+ and three Te+0.50- atoms. I1- is bonded in a 1-coordinate geometry to two Te+0.50- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ta3(Cl3O4)2 by Materials Project

Ta3(O2Cl3)2(O2)2 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of eight hydrogen peroxide molecules and two Ta3(O2Cl3)2 clusters. In each Ta3(O2Cl3)2 cluster, there are three inequivalent Ta sites. In the first Ta site, Ta is bonded in a 5-coordinate geometry to one O and four Cl atoms. The Ta–O bond length is 1.71 Å. There are a spread of Ta–Cl bond distances ranging from 2.32–2.53 Å. In the second Ta site, Ta is bonded in a 2-coordinate geometry to two O and three Cl atoms. Both Ta–O bond lengths are 1.75 Å. There are a spread of Ta–Cl bond distances ranging from 2.50–2.88 Å. In the third Ta site, Ta is bonded in a distorted single-bond geometry to one O and four Cl atoms. The Ta–O bond length is 1.71 Å. There are a spread of Ta–Cl bond distances ranging from 2.44–2.53 Å. There are four inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to one Ta atom. In the second O site, O is bonded in a single-bond geometry to one Ta atom. In the third O site, O is bonded in a single-bond geometry to one Ta atom. In the fourth O site, O is bonded in a single-bond geometry to one Ta atom. There are six inequivalent Cl sites. In the first Cl site, Cl is bonded in a bent 120 degrees geometry to two Ta atoms. In the second Cl site, Cl is bonded in a bent 120 degrees geometry to two Ta atoms. In the third Cl site, Cl is bonded in a distorted bent 120 degrees geometry to two Ta atoms. In the fourth Cl site, Cl is bonded in a water-like geometry to two Ta atoms. In the fifth Cl site, Cl is bonded in a single-bond geometry to one Ta atom. In the sixth Cl site, Cl is bonded in a bent 120 degrees geometry to two Ta atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ta3(InS3)2 by Materials Project

Ta3(InS3)2 crystallizes in the trigonal R32 space group. The structure is three-dimensional. there are two inequivalent Ta+3.33+ sites. In the first Ta+3.33+ site, Ta+3.33+ is bonded to six equivalent S2- atoms to form distorted edge-sharing TaS6 pentagonal pyramids. All Ta–S bond lengths are 2.49 Å. In the second Ta+3.33+ site, Ta+3.33+ is bonded to six equivalent S2- atoms to form distorted edge-sharing TaS6 pentagonal pyramids. All Ta–S bond lengths are 2.49 Å. In1+ is bonded in a 6-coordinate geometry to six equivalent S2- atoms. All In–S bond lengths are 3.15 Å. S2- is bonded in a 5-coordinate geometry to three Ta+3.33+ and two equivalent In1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ta3(CuS3)2 by Materials Project

Ta3(CuS3)2 crystallizes in the orthorhombic Cmc2_1 space group. The structure is three-dimensional. there are three inequivalent Ta+3.33+ sites. In the first Ta+3.33+ site, Ta+3.33+ is bonded to six S2- atoms to form distorted TaS6 pentagonal pyramids that share corners with six CuS4 trigonal pyramids, edges with six TaS6 pentagonal pyramids, and a faceface with one CuS4 trigonal pyramid. There are a spread of Ta–S bond distances ranging from 2.45–2.54 Å. In the second Ta+3.33+ site, Ta+3.33+ is bonded to six S2- atoms to form distorted TaS6 pentagonal pyramids that share corners with seven CuS4 trigonal pyramids and edges with six TaS6 pentagonal pyramids. There are a spread of Ta–S bond distances ranging from 2.47–2.50 Å. In the third Ta+3.33+ site, Ta+3.33+ is bonded to six S2- atoms to form distorted TaS6 pentagonal pyramids that share corners with five CuS4 trigonal pyramids, edges with six TaS6 pentagonal pyramids, and a faceface with one CuS4 trigonal pyramid. There are a spread of Ta–S bond distances ranging from 2.47–2.54 Å. There are two inequivalent Cu1+ sites. In the first Cu1+ site, Cu1+ is bonded to four S2- atoms to form distorted CuS4 trigonal pyramids that share corners with nine TaS6 pentagonal pyramids, corners with two equivalent CuS4 trigonal pyramids, and a faceface with one TaS6 pentagonal pyramid. There are a spread of Cu–S bond distances ranging from 2.23–2.33 Å. In the second Cu1+ site, Cu1+ is bonded to four S2- atoms to form distorted CuS4 trigonal pyramids that share corners with nine TaS6 pentagonal pyramids, corners with two equivalent CuS4 trigonal pyramids, and a faceface with one TaS6 pentagonal pyramid. There are a spread of Cu–S bond distances ranging from 2.23–2.32 Å. There are six inequivalent S2- sites. In the first S2- site, S2- is bonded in a 5-coordinate geometry to three Ta+3.33+ and two equivalent Cu1+ atoms. In the second S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to three Ta+3.33+ and one Cu1+ atom. In the third S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to three Ta+3.33+ and one Cu1+ atom. In the fourth S2- site, S2- is bonded in a rectangular see-saw-like geometry to three Ta+3.33+ and one Cu1+ atom. In the fifth S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to three Ta+3.33+ and one Cu1+ atom. In the sixth S2- site, S2- is bonded in a 5-coordinate geometry to three Ta+3.33+ and two equivalent Cu1+ atoms.

36 MATERIALS SCIENCE↗
NASA NTRS1997

Visuo-Vestibular Interactions

Session TA3 includes short reports covering: (1) Vestibulo-Oculomotor Interaction in Long-Term Microgravity; (2) Effects of Weightlessness on the Spatial Orientation of Visually Induced Eye Movements; (3) Adaptive Modification of the Three-Dimensional Vestibulo-Ocular Reflex during Prolonged Microgravity; (4) The Dynamic Change of Brain Potential Related to Selective Attention to Visual Signals from Left and Right Visual Fields; (5) Locomotor Errors Caused by Vestibular Suppression; and (6) A Novel, Image-Based Technique for Three-Dimensional Eye Measurement.

Source record↗