cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17188/1750992
title: Materials Data on LiIn(WO4)2 by Materials Project

description: LiInW2O8 is zeta iron carbide-derived structured and crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Li1+ is bonded to six O2- atoms to form distorted LiO6 octahedra that share corners with eight equivalent WO6 octahedra and edges with two equivalent InO6 octahedra. The corner-sharing octahedra tilt angles range from 44–57°. There are a spread of Li–O bond distances ranging from 2.15–2.39 Å. W6+ is bonded to six O2- atoms to form distorted WO6 octahedra that share corners with four equivalent LiO6 octahedra, corners with four equivalent InO6 octahedra, and edges with two equivalent WO6 octahedra. The corner-sharing octahedra tilt angles range from 43–57°. There are a spread of W–O bond distances ranging from 1.83–2.17 Å. In3+ is bonded to six O2- atoms to form InO6 octahedra that share corners with eight equivalent WO6 octahedra and edges with two equivalent LiO6 octahedra. The corner-sharing octahedra tilt angles range from 43–53°. There are a spread of In–O bond distances ranging from 2.16–2.22 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent W6+ and one In3+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one Li1+, one W6+, and one In3+ atom. In the third O2- site, O2- is bonded in a trigonal planar geometry to one Li1+ and two equivalent W6+ atoms. In the fourth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Li1+, one W6+, and one In3+ atom.
DOI: 10.17188/1750994
title: Materials Data on Co8(BiO4)5 by Materials Project

description: Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations
DOI: 10.17188/1750995
title: Materials Data on LiCo2C2O7 by Materials Project

description: Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations
DOI: 10.17188/1750996
title: Materials Data on Yb2Ga by Materials Project

description: Yb2Ga is Cotunnite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Yb sites. In the first Yb site, Yb is bonded to four equivalent Ga atoms to form a mixture of distorted edge and corner-sharing YbGa4 tetrahedra. There are a spread of Yb–Ga bond distances ranging from 3.07–3.11 Å. In the second Yb site, Yb is bonded in a 5-coordinate geometry to five equivalent Ga atoms. There are a spread of Yb–Ga bond distances ranging from 3.19–3.59 Å. Ga is bonded in a 9-coordinate geometry to nine Yb atoms.
DOI: 10.17188/1750997
title: Materials Data on BN by Materials Project

description: Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations
DOI: 10.17188/1750998
title: Materials Data on Li2Co2(SiO3)3 by Materials Project

description: Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations
DOI: 10.17188/1751001
title: Materials Data on TlBiTe2 by Materials Project

description: TlBiTe2 is Caswellsilverite-like structured and crystallizes in the orthorhombic Pmmm space group. The structure is three-dimensional. Tl1+ is bonded to six Te2- atoms to form TlTe6 octahedra that share corners with six equivalent TlTe6 octahedra, edges with four equivalent TlTe6 octahedra, and edges with eight equivalent BiTe6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (3.24 Å) and four longer (3.25 Å) Tl–Te bond lengths. Bi3+ is bonded to six Te2- atoms to form BiTe6 octahedra that share corners with six equivalent BiTe6 octahedra, edges with four equivalent BiTe6 octahedra, and edges with eight equivalent TlTe6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (3.24 Å) and four longer (3.25 Å) Bi–Te bond lengths. There are two inequivalent Te2- sites. In the first Te2- site, Te2- is bonded to two equivalent Tl1+ and four equivalent Bi3+ atoms to form a mixture of edge and corner-sharing TeTl2Bi4 octahedra. The corner-sharing octahedral tilt angles are 0°. In the second Te2- site, Te2- is bonded to four equivalent Tl1+ and two equivalent Bi3+ atoms to form TeTl4Bi2 octahedra that share corners with six equivalent TeTl4Bi2 octahedra and edges with twelve TeTl2Bi4 octahedra. The corner-sharing octahedral tilt angles are 0°.
DOI: 10.17188/1751002
title: Materials Data on Cr3CuO8 by Materials Project

description: Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations
DOI: 10.17188/1751003
title: Materials Data on Co2PbN2 by Materials Project

description: Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations
DOI: 10.17188/1751005
title: Materials Data on U2Te2N by Materials Project

description: U2NTe2 crystallizes in the tetragonal P4/mmm space group. The structure is zero-dimensional and consists of one U2NTe2 cluster. U+3.50+ is bonded in a distorted single-bond geometry to one N3- and one Te2- atom. The U–N bond length is 1.98 Å. The U–Te bond length is 3.14 Å. N3- is bonded in a linear geometry to two equivalent U+3.50+ atoms. Te2- is bonded in a distorted single-bond geometry to one U+3.50+ atom.
DOI: 10.17188/1751006
title: Materials Data on MgCrCu3Se4 by Materials Project

description: MgCrCu3Se4 crystallizes in the cubic P-43m space group. The structure is three-dimensional. Mg2+ is bonded to four equivalent Se2- atoms to form MgSe4 tetrahedra that share corners with four equivalent CrSe4 tetrahedra and corners with twelve equivalent CuSe4 tetrahedra. All Mg–Se bond lengths are 2.58 Å. Cr3+ is bonded to four equivalent Se2- atoms to form CrSe4 tetrahedra that share corners with four equivalent MgSe4 tetrahedra and edges with six equivalent CuSe4 tetrahedra. All Cr–Se bond lengths are 2.42 Å. Cu1+ is bonded to four equivalent Se2- atoms to form CuSe4 tetrahedra that share corners with four equivalent MgSe4 tetrahedra, corners with eight equivalent CuSe4 tetrahedra, and edges with two equivalent CrSe4 tetrahedra. All Cu–Se bond lengths are 2.47 Å. Se2- is bonded in a distorted pentagonal planar geometry to one Mg2+, one Cr3+, and three equivalent Cu1+ atoms.
DOI: 10.17188/1751007
title: Materials Data on Li3P7W5O29 by Materials Project

description: Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations
DOI: 10.17188/1751009
title: Materials Data on Rb(AsIr)2 by Materials Project

description: Rb(IrAs)2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Rb is bonded in a body-centered cubic geometry to eight equivalent As atoms. All Rb–As bond lengths are 3.57 Å. Ir is bonded to four equivalent As atoms to form a mixture of distorted edge and corner-sharing IrAs4 tetrahedra. All Ir–As bond lengths are 2.47 Å. As is bonded in a 8-coordinate geometry to four equivalent Rb and four equivalent Ir atoms.
DOI: 10.17188/1751011
title: Materials Data on FeNi2BO5 by Materials Project

description: Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations
DOI: 10.17188/1751012
title: Materials Data on RbC2 by Materials Project

description: RbC2 crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. Rb1+ is bonded in a distorted q4 geometry to ten C+0.50- atoms. There are a spread of Rb–C bond distances ranging from 3.06–3.51 Å. There are two inequivalent C+0.50- sites. In the first C+0.50- site, C+0.50- is bonded in a 2-coordinate geometry to five equivalent Rb1+ and one C+0.50- atom. The C–C bond length is 1.26 Å. In the second C+0.50- site, C+0.50- is bonded to five equivalent Rb1+ and one C+0.50- atom to form a mixture of distorted edge and corner-sharing CRb5C octahedra. The corner-sharing octahedral tilt angles are 20°.
DOI: 10.17188/1751013
title: Materials Data on KCr12Si8ClO28 by Materials Project

description: KCr12Si8O28Cl crystallizes in the tetragonal I4mm space group. The structure is three-dimensional. K1+ is bonded in a 4-coordinate geometry to eight O2- atoms. There are four shorter (2.63 Å) and four longer (2.98 Å) K–O bond lengths. There are three inequivalent Cr2+ sites. In the first Cr2+ site, Cr2+ is bonded in a distorted rectangular see-saw-like geometry to four O2- and one Cl1- atom. There are two shorter (2.06 Å) and two longer (2.07 Å) Cr–O bond lengths. The Cr–Cl bond length is 3.08 Å. In the second Cr2+ site, Cr2+ is bonded in a rectangular see-saw-like geometry to four O2- atoms. There are two shorter (2.05 Å) and two longer (2.06 Å) Cr–O bond lengths. In the third Cr2+ site, Cr2+ is bonded in a square co-planar geometry to four O2- atoms. There are two shorter (2.05 Å) and two longer (2.06 Å) Cr–O bond lengths. There are two inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded to four O2- atoms to form corner-sharing SiO4 tetrahedra. There is three shorter (1.64 Å) and one longer (1.65 Å) Si–O bond length. In the second Si4+ site, Si4+ is bonded to four O2- atoms to form corner-sharing SiO4 tetrahedra. There is three shorter (1.64 Å) and one longer (1.65 Å) Si–O bond length. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to one K1+, two equivalent Cr2+, and one Si4+ atom. In the second O2- site, O2- is bonded in a trigonal planar geometry to two equivalent Cr2+ and one Si4+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to two Cr2+ and one Si4+ atom. In the fourth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Cr2+ and one Si4+ atom. In the fifth O2- site, O2- is bonded in a distorted trigonal planar geometry to one K1+ and two Si4+ atoms. Cl1- is bonded in a 4-coordinate geometry to four equivalent Cr2+ atoms.
DOI: 10.17188/1751014
title: Materials Data on La3Al(FeO3)4 by Materials Project

description: La3Al(FeO3)4 crystallizes in the monoclinic Pm space group. The structure is three-dimensional. there are three inequivalent La3+ sites. In the first La3+ site, La3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of La–O bond distances ranging from 2.38–2.70 Å. In the second La3+ site, La3+ is bonded in a 4-coordinate geometry to eight O2- atoms. There are a spread of La–O bond distances ranging from 2.32–2.88 Å. In the third La3+ site, La3+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of La–O bond distances ranging from 2.43–2.91 Å. There are two inequivalent Fe3+ sites. In the first Fe3+ site, Fe3+ is bonded to six O2- atoms to form distorted FeO6 octahedra that share corners with six FeO6 octahedra and corners with two equivalent AlO4 tetrahedra. The corner-sharing octahedra tilt angles range from 26–48°. There are a spread of Fe–O bond distances ranging from 1.95–2.47 Å. In the second Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with six FeO6 octahedra and corners with two equivalent AlO4 tetrahedra. The corner-sharing octahedra tilt angles range from 25–48°. There are a spread of Fe–O bond distances ranging from 1.99–2.12 Å. Al3+ is bonded to four O2- atoms to form distorted AlO4 tetrahedra that share corners with eight FeO6 octahedra. The corner-sharing octahedra tilt angles range from 63–73°. There are a spread of Al–O bond distances ranging from 1.85–1.91 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded to two La3+ and two Fe3+ atoms to form a mixture of distorted corner and edge-sharing OLa2Fe2 tetrahedra. In the second O2- site, O2- is bonded in a 2-coordinate geometry to two La3+, two Fe3+, and one Al3+ atom. In the third O2- site, O2- is bonded in a 5-coordinate geometry to three La3+ and two Fe3+ atoms. In the fourth O2- site, O2- is bonded to two La3+ and two Fe3+ atoms to form a mixture of distorted corner and edge-sharing OLa2Fe2 trigonal pyramids. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to one La3+, two equivalent Fe3+, and one Al3+ atom. In the sixth O2- site, O2- is bonded in a 4-coordinate geometry to one La3+, two equivalent Fe3+, and one Al3+ atom. In the seventh O2- site, O2- is bonded to two La3+ and two equivalent Fe3+ atoms to form a mixture of distorted corner and edge-sharing OLa2Fe2 tetrahedra. In the eighth O2- site, O2- is bonded in a 3-coordinate geometry to three La3+ and two equivalent Fe3+ atoms.
DOI: 10.17188/1751016
title: Materials Data on V2Fe4Mo3O20 by Materials Project

description: Fe4V2Mo3O20 crystallizes in the tetragonal P4_122 space group. The structure is three-dimensional. there are two inequivalent V5+ sites. In the first V5+ site, V5+ is bonded to four O2- atoms to form VO4 tetrahedra that share corners with six FeO6 octahedra. The corner-sharing octahedra tilt angles range from 23–49°. There is two shorter (1.70 Å) and two longer (1.81 Å) V–O bond length. In the second V5+ site, V5+ is bonded to four O2- atoms to form VO4 tetrahedra that share corners with six FeO6 octahedra. The corner-sharing octahedra tilt angles range from 23–50°. There is two shorter (1.70 Å) and two longer (1.82 Å) V–O bond length. There are two inequivalent Mo6+ sites. In the first Mo6+ site, Mo6+ is bonded to four O2- atoms to form MoO4 tetrahedra that share corners with four FeO6 octahedra. The corner-sharing octahedra tilt angles range from 28–42°. There is two shorter (1.78 Å) and two longer (1.80 Å) Mo–O bond length. In the second Mo6+ site, Mo6+ is bonded to four O2- atoms to form MoO4 tetrahedra that share corners with four FeO6 octahedra. The corner-sharing octahedra tilt angles range from 19–48°. There is three shorter (1.79 Å) and one longer (1.81 Å) Mo–O bond length. There are two inequivalent Fe3+ sites. In the first Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with three VO4 tetrahedra, corners with three MoO4 tetrahedra, and an edgeedge with one FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 1.98–2.09 Å. In the second Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with three VO4 tetrahedra, corners with three MoO4 tetrahedra, and an edgeedge with one FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 2.00–2.07 Å. There are ten inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to one V5+ and two equivalent Fe3+ atoms. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to one Mo6+ and one Fe3+ atom. In the third O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Mo6+ and one Fe3+ atom. In the fourth O2- site, O2- is bonded in a distorted trigonal planar geometry to one V5+ and two equivalent Fe3+ atoms. In the fifth O2- site, O2- is bonded in a bent 150 degrees geometry to one Mo6+ and one Fe3+ atom. In the sixth O2- site, O2- is bonded in a bent 150 degrees geometry to one V5+ and one Fe3+ atom. In the seventh O2- site, O2- is bonded in a bent 150 degrees geometry to one Mo6+ and one Fe3+ atom. In the eighth O2- site, O2- is bonded in a bent 150 degrees geometry to one V5+ and one Fe3+ atom. In the ninth O2- site, O2- is bonded in a bent 150 degrees geometry to one Mo6+ and one Fe3+ atom. In the tenth O2- site, O2- is bonded in a bent 150 degrees geometry to one Mo6+ and one Fe3+ atom.
DOI: 10.17188/1751017
title: Materials Data on TcI4 by Materials Project

description: TcI4 crystallizes in the monoclinic P2_1/c space group. The structure is one-dimensional and consists of four TcI4 ribbons oriented in the (0, 1, 0) direction. there are two inequivalent Tc4+ sites. In the first Tc4+ site, Tc4+ is bonded to six I1- atoms to form edge-sharing TcI6 octahedra. There are a spread of Tc–I bond distances ranging from 2.63–2.85 Å. In the second Tc4+ site, Tc4+ is bonded to six I1- atoms to form edge-sharing TcI6 octahedra. There are a spread of Tc–I bond distances ranging from 2.64–2.86 Å. There are eight inequivalent I1- sites. In the first I1- site, I1- is bonded in a single-bond geometry to one Tc4+ atom. In the second I1- site, I1- is bonded in a single-bond geometry to one Tc4+ atom. In the third I1- site, I1- is bonded in a water-like geometry to two Tc4+ atoms. In the fourth I1- site, I1- is bonded in a water-like geometry to two Tc4+ atoms. In the fifth I1- site, I1- is bonded in a single-bond geometry to one Tc4+ atom. In the sixth I1- site, I1- is bonded in a single-bond geometry to one Tc4+ atom. In the seventh I1- site, I1- is bonded in a water-like geometry to two Tc4+ atoms. In the eighth I1- site, I1- is bonded in a water-like geometry to two Tc4+ atoms.
DOI: 10.17188/1751018
title: Materials Data on Tm(IO3)3 by Materials Project

description: Tm(O3I)3 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Tm3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Tm–O bond distances ranging from 2.23–2.56 Å. There are nine inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Tm3+ and one I5+ atom. The O–I bond length is 1.85 Å. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Tm3+ and one I5+ atom. The O–I bond length is 1.84 Å. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one I5+ atom. The O–I bond length is 1.83 Å. In the fourth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Tm3+ and one I5+ atom. The O–I bond length is 1.83 Å. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to one Tm3+ and one I5+ atom. The O–I bond length is 1.83 Å. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to one Tm3+ and one I5+ atom. The O–I bond length is 1.82 Å. In the seventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Tm3+ and one I5+ atom. The O–I bond length is 1.84 Å. In the eighth O2- site, O2- is bonded in a bent 150 degrees geometry to one Tm3+ and one I5+ atom. The O–I bond length is 1.83 Å. In the ninth O2- site, O2- is bonded in a bent 150 degrees geometry to one Tm3+ and one I5+ atom. The O–I bond length is 1.82 Å. There are three inequivalent I5+ sites. In the first I5+ site, I5+ is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. In the second I5+ site, I5+ is bonded in a 3-coordinate geometry to three O2- atoms. In the third I5+ site, I5+ is bonded in a 3-coordinate geometry to three O2- atoms.
DOI: 10.17188/1751019
title: Materials Data on Pr6N8O33 by Materials Project

description: Pr6N8O33 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are three inequivalent Pr sites. In the first Pr site, Pr is bonded in a 7-coordinate geometry to seven O atoms. There are a spread of Pr–O bond distances ranging from 2.37–2.66 Å. In the second Pr site, Pr is bonded in a 7-coordinate geometry to seven O atoms. There are a spread of Pr–O bond distances ranging from 2.36–2.64 Å. In the third Pr site, Pr is bonded in a 9-coordinate geometry to nine O atoms. There are a spread of Pr–O bond distances ranging from 2.42–2.80 Å. There are four inequivalent N sites. In the first N site, N is bonded in a trigonal planar geometry to three O atoms. There are a spread of N–O bond distances ranging from 1.24–1.27 Å. In the second N site, N is bonded in a trigonal planar geometry to three O atoms. There is one shorter (1.25 Å) and two longer (1.27 Å) N–O bond length. In the third N site, N is bonded in a trigonal planar geometry to three O atoms. There is one shorter (1.26 Å) and two longer (1.27 Å) N–O bond length. In the fourth N site, N is bonded in a trigonal planar geometry to three O atoms. There are a spread of N–O bond distances ranging from 1.23–1.29 Å. There are seventeen inequivalent O sites. In the first O site, O is bonded in a trigonal non-coplanar geometry to three Pr atoms. In the second O site, O is bonded in a distorted bent 120 degrees geometry to one Pr and one N atom. In the third O site, O is bonded in a single-bond geometry to one N atom. In the fourth O site, O is bonded in a distorted single-bond geometry to one Pr and one N atom. In the fifth O site, O is bonded in a trigonal non-coplanar geometry to three Pr atoms. In the sixth O site, O is bonded in a trigonal non-coplanar geometry to three Pr atoms. In the seventh O site, O is bonded in a distorted L-shaped geometry to one Pr and one N atom. In the eighth O site, O is bonded in a distorted single-bond geometry to one Pr and one N atom. In the ninth O site, O is bonded in a trigonal non-coplanar geometry to three Pr atoms. In the tenth O site, O is bonded in a single-bond geometry to one N atom. In the eleventh O site, O is bonded in a distorted L-shaped geometry to one Pr and one N atom. In the twelfth O site, O is bonded in a distorted linear geometry to two equivalent Pr atoms. In the thirteenth O site, O is bonded in a distorted bent 150 degrees geometry to one Pr and one N atom. In the fourteenth O site, O is bonded in a distorted single-bond geometry to one Pr and one N atom. In the fifteenth O site, O is bonded in a bent 120 degrees geometry to one Pr and one N atom. In the sixteenth O site, O is bonded in a distorted water-like geometry to one Pr and one N atom. In the seventeenth O site, O is bonded in a distorted water-like geometry to one Pr and one N atom.
DOI: 10.17188/1751020
title: Materials Data on CNClO4 by Materials Project

description: CNClO4 is Silicon tetrafluoride-derived structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of eight hydrogen cyanide molecules and eight ClO4 clusters. In each ClO4 cluster, there are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one Cl1- atom. The O–Cl bond length is 1.43 Å. In the second O2- site, O2- is bonded in a single-bond geometry to one Cl1- atom. The O–Cl bond length is 1.43 Å. In the third O2- site, O2- is bonded in a single-bond geometry to one Cl1- atom. The O–Cl bond length is 1.49 Å. In the fourth O2- site, O2- is bonded in a single-bond geometry to one Cl1- atom. The O–Cl bond length is 1.50 Å. Cl1- is bonded in a tetrahedral geometry to four O2- atoms.