cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17188/1285942
title: Materials Data on NaCo2H3(SO5)2 (SG:8) 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: 10.17188/1285943
title: Materials Data on Li2FeP2HO8 (SG:7) 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: 10.17188/1285944
title: Materials Data on Ba3La2Ti3Cr2O15 (SG:65) 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: 10.17188/1285945
title: Materials Data on SrNd7Fe8(AsO)8 (SG:107) 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: 10.17188/1285950
title: Materials Data on Ba2La3Ti2Cr3O15 (SG:65) 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: 10.17188/1285951
title: Materials Data on Ba3LaIn(WO6)2 (SG:160) 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: 10.17188/1285952
title: Materials Data on SnH6Cl4O3 by Materials Project

description: SnH6O3Cl4 crystallizes in the monoclinic P2_1/c space group. The structure is one-dimensional and consists of two SnH6O3Cl4 ribbons oriented in the (0, 0, 1) direction. Sn4+ is bonded in an octahedral geometry to two O2- and four Cl1- atoms. There are one shorter (2.21 Å) and one longer (2.22 Å) Sn–O bond lengths. There are a spread of Sn–Cl bond distances ranging from 2.38–2.46 Å. There are six inequivalent H1+ sites. In the first 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 second H1+ site, H1+ is bonded in a distorted linear geometry to two O2- atoms. There is one shorter (1.01 Å) and one longer (1.67 Å) H–O bond length. In the third H1+ site, H1+ is bonded in a distorted linear 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. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted water-like geometry to one Sn4+ and two H1+ atoms. In the second O2- site, O2- is bonded in a distorted water-like geometry to one Sn4+ and two H1+ atoms. In the third O2- site, O2- is bonded in a distorted water-like geometry to four H1+ atoms. There are four inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a single-bond geometry to one Sn4+ atom. In the second Cl1- site, Cl1- is bonded in a single-bond geometry to one Sn4+ atom. In the third Cl1- site, Cl1- is bonded in a single-bond geometry to one Sn4+ atom. In the fourth Cl1- site, Cl1- is bonded in a single-bond geometry to one Sn4+ atom.
DOI: 10.17188/1285964
title: Materials Data on MnF4 by Materials Project

description: MnF4 crystallizes in the trigonal R-3c space group. The structure is three-dimensional. Mn4+ is bonded to six F1- atoms to form corner-sharing MnF6 octahedra. The corner-sharing octahedral tilt angles are 38°. There is two shorter (1.76 Å) and four longer (1.91 Å) Mn–F bond length. There are three inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one Mn4+ atom. In the second F1- site, F1- is bonded in a bent 150 degrees geometry to two equivalent Mn4+ atoms. In the third F1- site, F1- is bonded in a bent 150 degrees geometry to two equivalent Mn4+ atoms.
DOI: 10.17188/1285965
title: Materials Data on FePH5NO4F (SG:1) 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: 10.17188/1285966
title: Materials Data on Ba3La3Mn2(WO6)3 (SG:160) 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: 10.17188/1285967
title: Materials Data on NaCa3Fe4(SiO3)8 (SG: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: 10.17188/1285968
title: Materials Data on Na6Al4Fe(Si4O13)2 (SG: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: 10.17188/1285970
title: Materials Data on U3Cu2H10(CO10)2 by Materials Project

description: U3Cu2H10(CO10)2 crystallizes in the triclinic P-1 space group. The structure is two-dimensional and consists of one U3Cu2H10(CO10)2 sheet oriented in the (0, -1, 1) direction. there are two inequivalent U6+ sites. In the first U6+ site, U6+ is bonded to eight O2- atoms to form distorted edge-sharing UO8 hexagonal bipyramids. There are a spread of U–O bond distances ranging from 1.87–2.58 Å. In the second U6+ site, U6+ is bonded to seven O2- atoms to form distorted UO7 pentagonal bipyramids that share corners with two equivalent CuO6 octahedra, edges with two equivalent UO8 hexagonal bipyramids, and an edgeedge with one UO7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 52–60°. There are a spread of U–O bond distances ranging from 1.83–2.47 Å. Cu2+ is bonded to six O2- atoms to form distorted CuO6 octahedra that share corners with two equivalent UO7 pentagonal bipyramids and edges with two equivalent CuO6 octahedra. There are a spread of Cu–O bond distances ranging from 1.96–2.69 Å. C4+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.27 Å) and two longer (1.30 Å) C–O bond length. There are five inequivalent H1+ sites. In the first 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 second 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 third H1+ site, H1+ is bonded in a single-bond geometry to two O2- atoms. There is one shorter (1.00 Å) and one longer (1.72 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 0.98 Å. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. There are ten inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Cu2+ and two H1+ atoms. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to one Cu2+ and two H1+ atoms. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one U6+ atom. In the fourth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one U6+ and one H1+ atom. In the fifth O2- site, O2- is bonded in a single-bond geometry to one U6+ atom. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to two U6+ and one C4+ atom. In the seventh O2- site, O2- is bonded in a trigonal planar geometry to three U6+ atoms. In the eighth O2- site, O2- is bonded in a distorted single-bond geometry to two U6+ and one C4+ atom. In the ninth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two equivalent Cu2+ and one C4+ atom. In the tenth O2- site, O2- is bonded in a distorted single-bond geometry to one U6+, two equivalent Cu2+, and one H1+ atom.
DOI: 10.17188/1285971
title: Materials Data on SrLaMnFeO6 (SG:13) 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: 10.17188/1285973
title: Materials Data on CaB3H5O8 by Materials Project

description: CaB3O3(OH)5 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Ca2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Ca–O bond distances ranging from 2.37–2.60 Å. There are three inequivalent B3+ sites. In the first B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.37–1.39 Å. In the second B3+ site, B3+ is bonded to four O2- atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.46–1.53 Å. In the third B3+ site, B3+ is bonded to four O2- atoms to form corner-sharing BO4 tetrahedra. There are a spread of B–O bond distances ranging from 1.48–1.50 Å. There are five inequivalent H1+ sites. In the first 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 second 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 third 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 fourth 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 fifth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted water-like geometry to one Ca2+ and two H1+ atoms. In the second O2- site, O2- is bonded in a 2-coordinate geometry to one Ca2+ and two B3+ atoms. In the third O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ca2+ and two B3+ atoms. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to one Ca2+, one B3+, and one H1+ atom. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to one Ca2+, one B3+, and one H1+ atom. In the sixth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ca2+ and two B3+ atoms. In the seventh O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two B3+ atoms. In the eighth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Ca2+, one B3+, and one H1+ atom.
DOI: 10.17188/1285976
title: Materials Data on Ba3LaZnReWO12 (SG:160) 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: 10.17188/1285977
title: Materials Data on Rb4NaW2N5O (SG:2) 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: 10.17188/1285978
title: Materials Data on Ce8Fe8As8O7F (SG:119) 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: 10.17188/1285979
title: Materials Data on SbHC3(NCl3)3 by Materials Project

description: C3H(NCl)3SbCl6 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four schembl11997375 molecules and four SbCl6 clusters. In each SbCl6 cluster, Sb5+ is bonded in an octahedral geometry to six Cl1- atoms. There are a spread of Sb–Cl bond distances ranging from 2.38–2.48 Å. There are six inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a single-bond geometry to one Sb5+ atom. In the second Cl1- site, Cl1- is bonded in a single-bond geometry to one Sb5+ atom. In the third Cl1- site, Cl1- is bonded in a single-bond geometry to one Sb5+ atom. In the fourth Cl1- site, Cl1- is bonded in a single-bond geometry to one Sb5+ atom. In the fifth Cl1- site, Cl1- is bonded in a single-bond geometry to one Sb5+ atom. In the sixth Cl1- site, Cl1- is bonded in a single-bond geometry to one Sb5+ atom.
DOI: 10.17188/1285980
title: Materials Data on Li10Sn(PSe6)2 by Materials Project

description: Li10Sn(PSe6)2 crystallizes in the tetragonal P4_2mc space group. The structure is three-dimensional. there are four inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded in a 4-coordinate geometry to four Se2- atoms. There are a spread of Li–Se bond distances ranging from 2.57–2.97 Å. In the second Li1+ site, Li1+ is bonded to six Se2- atoms to form LiSe6 octahedra that share corners with two equivalent PSe4 tetrahedra, edges with two equivalent PSe4 tetrahedra, and edges with four equivalent LiSe5 trigonal bipyramids. There are a spread of Li–Se bond distances ranging from 2.76–2.86 Å. In the third Li1+ site, Li1+ is bonded to six Se2- atoms to form LiSe6 octahedra that share corners with two equivalent PSe4 tetrahedra, edges with two equivalent SnSe4 tetrahedra, and faces with four equivalent LiSe5 trigonal bipyramids. There are a spread of Li–Se bond distances ranging from 2.83–2.94 Å. In the fourth Li1+ site, Li1+ is bonded to five Se2- atoms to form distorted LiSe5 trigonal bipyramids that share a cornercorner with one PSe4 tetrahedra, corners with two equivalent SnSe4 tetrahedra, corners with three equivalent LiSe5 trigonal bipyramids, an edgeedge with one LiSe6 octahedra, an edgeedge with one PSe4 tetrahedra, an edgeedge with one LiSe5 trigonal bipyramid, and a faceface with one LiSe6 octahedra. There are a spread of Li–Se bond distances ranging from 2.53–3.10 Å. Sn4+ is bonded to four Se2- atoms to form SnSe4 tetrahedra that share corners with eight equivalent LiSe5 trigonal bipyramids and edges with two equivalent LiSe6 octahedra. There are two shorter (2.55 Å) and two longer (2.56 Å) Sn–Se bond lengths. There are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four Se2- atoms to form PSe4 tetrahedra that share corners with four equivalent LiSe5 trigonal bipyramids and edges with two equivalent LiSe6 octahedra. There are two shorter (2.22 Å) and two longer (2.24 Å) P–Se bond lengths. In the second P5+ site, P5+ is bonded to four Se2- atoms to form PSe4 tetrahedra that share corners with four LiSe6 octahedra and edges with four equivalent LiSe5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 43–50°. There are two shorter (2.22 Å) and two longer (2.24 Å) P–Se bond lengths. There are six inequivalent Se2- sites. In the first Se2- site, Se2- is bonded to three Li1+ and one P5+ atom to form a mixture of edge and corner-sharing SeLi3P trigonal pyramids. In the second Se2- site, Se2- is bonded in a distorted hexagonal planar geometry to five Li1+ and one Sn4+ atom. In the third Se2- site, Se2- is bonded in a rectangular see-saw-like geometry to three Li1+ and one P5+ atom. In the fourth Se2- site, Se2- is bonded in a 6-coordinate geometry to five Li1+ and one Sn4+ atom. In the fifth Se2- site, Se2- is bonded in a 6-coordinate geometry to five Li1+ and one P5+ atom. In the sixth Se2- site, Se2- is bonded to three Li1+ and one P5+ atom to form distorted corner-sharing SeLi3P trigonal pyramids.
DOI: 10.17188/1285982
title: Materials Data on Ni15O16 by Materials Project

description: Ni15O16 crystallizes in the cubic Im-3m space group. The structure is three-dimensional. there are two inequivalent Ni+2.13+ sites. In the first Ni+2.13+ site, Ni+2.13+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing NiO6 octahedra. The corner-sharing octahedra tilt angles range from 0–11°. There are a spread of Ni–O bond distances ranging from 2.08–2.14 Å. In the second Ni+2.13+ site, Ni+2.13+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing NiO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (1.94 Å) and four longer (2.10 Å) Ni–O bond lengths. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded to six Ni+2.13+ atoms to form ONi6 octahedra that share corners with two equivalent ONi6 octahedra, corners with four equivalent ONi5 square pyramids, edges with eight ONi6 octahedra, and edges with four equivalent ONi5 square pyramids. The corner-sharing octahedral tilt angles are 0°. In the second O2- site, O2- is bonded to five Ni+2.13+ atoms to form ONi5 square pyramids that share corners with four equivalent ONi6 octahedra, corners with five equivalent ONi5 square pyramids, and edges with eight ONi6 octahedra. The corner-sharing octahedral tilt angles are 6°. In the third O2- site, O2- is bonded to six equivalent Ni+2.13+ atoms to form ONi6 octahedra that share corners with six equivalent ONi6 octahedra, edges with six equivalent ONi6 octahedra, and edges with six equivalent ONi5 square pyramids. The corner-sharing octahedral tilt angles are 3°.
DOI: 10.17188/1285983
title: Materials Data on Sn3H4(NO5)2 by Materials Project

description: Sn3H4(NO5)2 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four Sn3H4(NO5)2 clusters. there are three inequivalent Sn4+ sites. In the first Sn4+ site, Sn4+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Sn–O bond distances ranging from 2.20–2.70 Å. In the second Sn4+ site, Sn4+ is bonded in a 3-coordinate geometry to three O2- atoms. There are a spread of Sn–O bond distances ranging from 2.18–2.31 Å. In the third Sn4+ site, Sn4+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Sn–O bond distances ranging from 2.16–2.76 Å. There are two inequivalent N2+ sites. In the first N2+ site, N2+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.27 Å) and one longer (1.28 Å) N–O bond length. In the second N2+ site, N2+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of N–O bond distances ranging from 1.26–1.28 Å. There are four inequivalent H1+ sites. In the first 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 second 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 third 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 fourth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. There are ten inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one N2+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one Sn4+ and one N2+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to two Sn4+ and one H1+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to three Sn4+ and one H1+ atom. In the fifth O2- site, O2- is bonded in a single-bond geometry to one N2+ atom. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to two Sn4+ and one H1+ atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to two Sn4+ and one H1+ atom. In the eighth O2- site, O2- is bonded in a single-bond geometry to one N2+ atom. In the ninth O2- site, O2- is bonded in a single-bond geometry to one N2+ atom. In the tenth O2- site, O2- is bonded in a single-bond geometry to one Sn4+ and one N2+ atom.
DOI: 10.17188/1285985
title: Materials Data on CaLaVFeO6 (SG:1) 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: 10.17188/1285986
title: Materials Data on CuH7C3SN3O4 by Materials Project

description: CuC3H3S(NO)3H2H2O crystallizes in the monoclinic P2_1/c space group. The structure is one-dimensional and consists of four hydrogen molecules; four water molecules; and two CuC3H3S(NO)3 ribbons oriented in the (0, 0, 1) direction. In each CuC3H3S(NO)3 ribbon, Cu2+ is bonded in a rectangular see-saw-like geometry to two N3-, one S2-, and one O2- atom. There are one shorter (1.98 Å) and one longer (2.07 Å) Cu–N bond lengths. The Cu–S bond length is 2.32 Å. The Cu–O bond length is 1.95 Å. There are three inequivalent C+3.33+ sites. In the first C+3.33+ site, C+3.33+ is bonded in a distorted bent 120 degrees geometry to one N3-, one S2-, and one O2- atom. The C–N bond length is 1.33 Å. The C–S bond length is 1.68 Å. The C–O bond length is 1.37 Å. In the second C+3.33+ site, C+3.33+ is bonded in a bent 120 degrees geometry to one N3- and one H1+ atom. The C–N bond length is 1.31 Å. The C–H bond length is 1.09 Å. In the third C+3.33+ site, C+3.33+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.24 Å) and one longer (1.32 Å) C–O bond length. There are three inequivalent N3- sites. In the first N3- site, N3- is bonded in a distorted trigonal planar geometry to one Cu2+, one C+3.33+, and one N3- atom. The N–N bond length is 1.30 Å. In the second N3- site, N3- is bonded in a 3-coordinate geometry to one Cu2+, one N3-, and one O2- atom. The N–O bond length is 1.49 Å. In the third N3- site, N3- is bonded in a trigonal planar geometry to one C+3.33+ and two H1+ atoms. Both N–H bond lengths are 1.02 Å. There are three inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one C+3.33+ atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. S2- is bonded in a distorted water-like geometry to one Cu2+ and one C+3.33+ atom. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one C+3.33+ atom. In the second O2- site, O2- is bonded in a water-like geometry to one C+3.33+ and one N3- atom. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to one Cu2+ and one C+3.33+ atom.