SEARCH · Search NASA
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
MgTe is Zincblende, Sphalerite structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. Mg2+ is bonded to four equivalent Te2- atoms to form corner-sharing MgTe4 tetrahedra. All Mg–Te bond lengths are 2.82 Å. Te2- is bonded to four equivalent Mg2+ atoms to form corner-sharing TeMg4 tetrahedra.
MgTe(H4O3)3 crystallizes in the trigonal R3 space group. The structure is three-dimensional. Mg2+ is bonded in an octahedral geometry to six O2- atoms. There are three shorter (2.09 Å) and three longer (2.15 Å) Mg–O bond lengths. There are four inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a distorted single-bond geometry to two O2- atoms. There is one shorter (1.01 Å) and one longer (1.67 Å) H–O bond length. In the second H1+ site, H1+ is bonded in a distorted single-bond geometry to two O2- atoms. There is one shorter (1.02 Å) and one longer (1.63 Å) H–O bond length. In the third H1+ site, H1+ is bonded in a distorted single-bond geometry to two O2- atoms. There is one shorter (1.01 Å) and one longer (1.67 Å) H–O bond length. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. Te4+ is bonded in a distorted trigonal non-coplanar geometry to three equivalent O2- atoms. All Te–O bond lengths are 1.90 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted water-like geometry to one Mg2+ and two H1+ atoms. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to one Mg2+ and two H1+ atoms. In the third O2- site, O2- is bonded to three H1+ and one Te4+ atom to form distorted corner-sharing OTeH3 tetrahedra.
MgTe is Halite, Rock Salt structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Mg2+ is bonded to six equivalent Te2- atoms to form a mixture of edge and corner-sharing MgTe6 octahedra. The corner-sharing octahedral tilt angles are 0°. All Mg–Te bond lengths are 2.99 Å. Te2- is bonded to six equivalent Mg2+ atoms to form a mixture of edge and corner-sharing TeMg6 octahedra. The corner-sharing octahedral tilt angles are 0°.
MgTe is Molybdenum Carbide MAX Phase-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Mg2+ is bonded to six equivalent Te2- atoms to form a mixture of corner, edge, and face-sharing MgTe6 octahedra. The corner-sharing octahedral tilt angles are 48°. All Mg–Te bond lengths are 2.99 Å. Te2- is bonded in a 6-coordinate geometry to six equivalent Mg2+ atoms.
Pb2MgTeO6 is (Cubic) Perovskite-derived structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Mg2+ is bonded to six equivalent O2- atoms to form MgO6 octahedra that share corners with six equivalent TeO6 octahedra and faces with eight equivalent PbO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Mg–O bond lengths are 2.09 Å. Pb2+ is bonded to twelve equivalent O2- atoms to form PbO12 cuboctahedra that share corners with twelve equivalent PbO12 cuboctahedra, faces with six equivalent PbO12 cuboctahedra, faces with four equivalent MgO6 octahedra, and faces with four equivalent TeO6 octahedra. All Pb–O bond lengths are 2.86 Å. Te6+ is bonded to six equivalent O2- atoms to form TeO6 octahedra that share corners with six equivalent MgO6 octahedra and faces with eight equivalent PbO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Te–O bond lengths are 1.94 Å. O2- is bonded in a linear geometry to one Mg2+, four equivalent Pb2+, and one Te6+ atom.
MgO6TeCl6 is Modderite-like structured and crystallizes in the trigonal R-3 space group. The structure is zero-dimensional and consists of three MgO6 clusters and three TeCl6 clusters. In each MgO6 cluster, Mg is bonded in a distorted octahedral geometry to six equivalent O atoms. All Mg–O bond lengths are 2.18 Å. O is bonded in a 1-coordinate geometry to one Mg and two equivalent O atoms. Both O–O bond lengths are 1.52 Å. In each TeCl6 cluster, Te is bonded in an octahedral geometry to six equivalent Cl atoms. All Te–Cl bond lengths are 2.57 Å. Cl is bonded in a single-bond geometry to one Te atom.
Pb2MgTeO6 is (Cubic) Perovskite-derived structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with six equivalent TeO6 octahedra and faces with eight PbO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 1–6°. There are a spread of Mg–O bond distances ranging from 2.07–2.13 Å. There are two inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded to twelve O2- atoms to form PbO12 cuboctahedra that share corners with twelve equivalent PbO12 cuboctahedra, faces with six equivalent PbO12 cuboctahedra, faces with four equivalent MgO6 octahedra, and faces with four equivalent TeO6 octahedra. There are a spread of Pb–O bond distances ranging from 2.70–3.03 Å. In the second Pb2+ site, Pb2+ is bonded to twelve O2- atoms to form PbO12 cuboctahedra that share corners with twelve equivalent PbO12 cuboctahedra, faces with six equivalent PbO12 cuboctahedra, faces with four equivalent MgO6 octahedra, and faces with four equivalent TeO6 octahedra. There are a spread of Pb–O bond distances ranging from 2.70–3.01 Å. Te6+ is bonded to six O2- atoms to form TeO6 octahedra that share corners with six equivalent MgO6 octahedra and faces with eight PbO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 1–6°. There is three shorter (1.94 Å) and three longer (1.95 Å) Te–O bond length. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted linear geometry to one Mg2+, four Pb2+, and one Te6+ atom. In the second O2- site, O2- is bonded in a distorted linear geometry to one Mg2+, four Pb2+, and one Te6+ atom. In the third O2- site, O2- is bonded in a distorted linear geometry to one Mg2+, four Pb2+, and one Te6+ atom. In the fourth O2- site, O2- is bonded in a distorted linear geometry to one Mg2+, four Pb2+, and one Te6+ atom. In the fifth O2- site, O2- is bonded in a distorted linear geometry to one Mg2+, four Pb2+, and one Te6+ atom. In the sixth O2- site, O2- is bonded in a distorted linear geometry to one Mg2+, four Pb2+, and one Te6+ atom.
(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.
Not provided.