cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17188/1722617
title: Materials Data on CdIn3Te4As by Materials Project

description: CdIn3AsTe4 crystallizes in the triclinic P1 space group. The structure is three-dimensional. Cd2+ is bonded to one As3- and three Te2- atoms to form CdTe3As tetrahedra that share corners with nine InTe3As tetrahedra. The Cd–As bond length is 2.68 Å. There are two shorter (2.87 Å) and one longer (2.89 Å) Cd–Te bond lengths. There are three inequivalent In3+ sites. In the first In3+ site, In3+ is bonded to one As3- and three Te2- atoms to form InTe3As tetrahedra that share corners with three equivalent CdTe3As tetrahedra and corners with six InTe3As tetrahedra. The In–As bond length is 2.66 Å. There are a spread of In–Te bond distances ranging from 2.84–2.87 Å. In the second In3+ site, In3+ is bonded to one As3- and three Te2- atoms to form InTe3As tetrahedra that share corners with three equivalent CdTe3As tetrahedra and corners with six InTe3As tetrahedra. The In–As bond length is 2.66 Å. There are a spread of In–Te bond distances ranging from 2.83–2.90 Å. In the third In3+ site, In3+ is bonded to one As3- and three Te2- atoms to form InTe3As tetrahedra that share corners with three equivalent CdTe3As tetrahedra and corners with six InTe3As tetrahedra. The In–As bond length is 2.66 Å. There are a spread of In–Te bond distances ranging from 2.84–2.87 Å. As3- is bonded in a tetrahedral geometry to one Cd2+ and three In3+ atoms. There are four inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a trigonal non-coplanar geometry to one Cd2+ and two In3+ atoms. In the second Te2- site, Te2- is bonded in a trigonal non-coplanar geometry to one Cd2+ and two In3+ atoms. In the third Te2- site, Te2- is bonded in a trigonal non-coplanar geometry to one Cd2+ and two In3+ atoms. In the fourth Te2- site, Te2- is bonded in a trigonal non-coplanar geometry to three In3+ atoms.
DOI: 10.17188/1722619
title: Materials Data on Mn3Fe5O12 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: 10.17188/1722620
title: Materials Data on AlSi3O8 by Materials Project

description: AlSi3O8 is Low Tridymite-derived structured and crystallizes in the monoclinic Pc space group. The structure is three-dimensional. Al is bonded to four O atoms to form AlO4 tetrahedra that share corners with four SiO4 tetrahedra. There are a spread of Al–O bond distances ranging from 1.74–1.76 Å. There are three inequivalent Si sites. In the first Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share a cornercorner with one AlO4 tetrahedra and corners with three SiO4 tetrahedra. There are a spread of Si–O bond distances ranging from 1.61–1.64 Å. In the second Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share corners with two equivalent AlO4 tetrahedra and corners with two SiO4 tetrahedra. There is two shorter (1.62 Å) and two longer (1.63 Å) Si–O bond length. In the third Si site, Si is bonded to four O atoms to form SiO4 tetrahedra that share a cornercorner with one AlO4 tetrahedra and corners with three SiO4 tetrahedra. There is one shorter (1.61 Å) and three longer (1.63 Å) Si–O bond length. There are eight inequivalent O sites. In the first O site, O is bonded in a bent 150 degrees geometry to one Al and one Si atom. In the second O site, O is bonded in a bent 150 degrees geometry to two Si atoms. In the third O site, O is bonded in a bent 150 degrees geometry to one Al and one Si atom. In the fourth O site, O is bonded in a bent 150 degrees geometry to two Si atoms. In the fifth O site, O is bonded in a bent 150 degrees geometry to one Al and one Si atom. In the sixth O site, O is bonded in a bent 150 degrees geometry to two Si atoms. In the seventh O site, O is bonded in a bent 150 degrees geometry to one Al and one Si atom. In the eighth O site, O is bonded in a bent 150 degrees geometry to two Si atoms.
DOI: 10.17188/1722621
title: Materials Data on BeGe3 by Materials Project

description: BeGe3 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Be is bonded in a distorted square co-planar geometry to twelve Ge atoms. There are four shorter (2.78 Å) and eight longer (2.95 Å) Be–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded to four equivalent Be and eight Ge atoms to form a mixture of distorted face, edge, and corner-sharing GeBe4Ge8 cuboctahedra. There are four shorter (2.78 Å) and four longer (2.95 Å) Ge–Ge bond lengths. In the second Ge site, Ge is bonded in a distorted square co-planar geometry to four equivalent Be and eight equivalent Ge atoms.
DOI: 10.17188/1722622
title: Materials Data on Y6Ga17Pd5 by Materials Project

description: Y6Pd5Ga17 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are three inequivalent Y sites. In the first Y site, Y is bonded to twelve Ga atoms to form distorted YGa12 cuboctahedra that share an edgeedge with one GaY4Ga4Pd4 cuboctahedra and faces with two equivalent YGa12 cuboctahedra. There are a spread of Y–Ga bond distances ranging from 3.19–3.23 Å. In the second Y site, Y is bonded in a 12-coordinate geometry to four Pd and ten Ga atoms. There are two shorter (3.10 Å) and two longer (3.26 Å) Y–Pd bond lengths. There are a spread of Y–Ga bond distances ranging from 3.09–3.52 Å. In the third Y site, Y is bonded in a 10-coordinate geometry to two equivalent Pd and twelve Ga atoms. Both Y–Pd bond lengths are 3.07 Å. There are a spread of Y–Ga bond distances ranging from 3.07–3.46 Å. There are three inequivalent Pd sites. In the first Pd site, Pd is bonded in a 10-coordinate geometry to two equivalent Y and eight Ga atoms. There are a spread of Pd–Ga bond distances ranging from 2.62–2.79 Å. In the second Pd site, Pd is bonded in a 12-coordinate geometry to two equivalent Y and six Ga atoms. There are a spread of Pd–Ga bond distances ranging from 2.55–2.72 Å. In the third Pd site, Pd is bonded in a 12-coordinate geometry to four equivalent Y and four Ga atoms. There are two shorter (2.62 Å) and two longer (2.63 Å) Pd–Ga bond lengths. There are nine inequivalent Ga sites. In the first Ga site, Ga is bonded in a 10-coordinate geometry to four Y, three Pd, and three equivalent Ga atoms. There are two shorter (2.65 Å) and one longer (2.73 Å) Ga–Ga bond lengths. In the second Ga site, Ga is bonded in a 10-coordinate geometry to four Y, two equivalent Pd, and four Ga atoms. There are two shorter (2.60 Å) and two longer (2.71 Å) Ga–Ga bond lengths. In the third Ga site, Ga is bonded in a 10-coordinate geometry to four Y, two equivalent Pd, and four Ga atoms. There are a spread of Ga–Ga bond distances ranging from 2.60–2.71 Å. In the fourth Ga site, Ga is bonded in a 10-coordinate geometry to four Y, three Pd, and three Ga atoms. There are two shorter (2.65 Å) and one longer (2.74 Å) Ga–Ga bond lengths. In the fifth Ga site, Ga is bonded in a 1-coordinate geometry to four Y, one Pd, and four Ga atoms. The Ga–Ga bond length is 2.55 Å. In the sixth Ga site, Ga is bonded in a 1-coordinate geometry to four Y, one Pd, and four Ga atoms. The Ga–Ga bond length is 2.58 Å. In the seventh Ga site, Ga is bonded in a 1-coordinate geometry to four Y, one Pd, and four Ga atoms. In the eighth Ga site, Ga is bonded in a 1-coordinate geometry to four Y, one Pd, and four Ga atoms. In the ninth Ga site, Ga is bonded to four equivalent Y, four equivalent Pd, and four Ga atoms to form distorted GaY4Ga4Pd4 cuboctahedra that share edges with two equivalent YGa12 cuboctahedra and faces with two equivalent GaY4Ga4Pd4 cuboctahedra.
DOI: 10.17188/1722623
title: Materials Data on Gd(BRh)4 by Materials Project

description: GdRh4B4 crystallizes in the tetragonal P4_2/nmc space group. The structure is three-dimensional. Gd is bonded in a 12-coordinate geometry to twelve equivalent Rh and twelve equivalent B atoms. There are four shorter (2.98 Å) and eight longer (3.18 Å) Gd–Rh bond lengths. There are eight shorter (3.04 Å) and four longer (3.15 Å) Gd–B bond lengths. Rh is bonded in a 5-coordinate geometry to three equivalent Gd and five equivalent B atoms. There are a spread of Rh–B bond distances ranging from 2.22–2.26 Å. B is bonded in a 6-coordinate geometry to three equivalent Gd, five equivalent Rh, and one B atom. The B–B bond length is 1.81 Å.
DOI: 10.17188/1722624
title: Materials Data on Cr5Si3B by Materials Project

description: Cr5BSi3 crystallizes in the hexagonal P6_3/mcm space group. The structure is three-dimensional. there are two inequivalent Cr3+ sites. In the first Cr3+ site, Cr3+ is bonded in a 8-coordinate geometry to two equivalent Cr3+ and six equivalent Si4- atoms. Both Cr–Cr bond lengths are 2.35 Å. All Cr–Si bond lengths are 2.44 Å. In the second Cr3+ site, Cr3+ is bonded to two equivalent B3- and five equivalent Si4- atoms to form a mixture of distorted corner, edge, and face-sharing CrSi5B2 pentagonal bipyramids. Both Cr–B bond lengths are 2.09 Å. There are a spread of Cr–Si bond distances ranging from 2.46–2.59 Å. B3- is bonded to six equivalent Cr3+ atoms to form face-sharing BCr6 octahedra. Si4- is bonded in a 9-coordinate geometry to nine Cr3+ atoms.
DOI: 10.17188/1722625
title: Materials Data on CdC2S2(IN2)2 by Materials Project

description: CdC2S2(N2I)2 crystallizes in the monoclinic P2_1/c space group. The structure is two-dimensional and consists of one CdC2S2(N2I)2 sheet oriented in the (1, 0, 0) direction. Cd2+ is bonded in a 4-coordinate geometry to one N1-, one S2-, and two I1- atoms. The Cd–N bond length is 2.27 Å. The Cd–S bond length is 2.49 Å. There are one shorter (2.97 Å) and one longer (3.02 Å) Cd–I bond lengths. There are two inequivalent C4+ sites. In the first C4+ site, C4+ is bonded in a linear geometry to two N1- atoms. There is one shorter (1.20 Å) and one longer (1.27 Å) C–N bond length. In the second C4+ site, C4+ is bonded in a 3-coordinate geometry to two N1- and one S2- atom. There is one shorter (1.27 Å) and one longer (1.36 Å) C–N bond length. The C–S bond length is 1.79 Å. There are four inequivalent N1- sites. In the first N1- site, N1- is bonded in a 1-coordinate geometry to one C4+ and one I1- atom. The N–I bond length is 2.17 Å. In the second N1- site, N1- is bonded in a bent 120 degrees geometry to one C4+ and one S2- atom. The N–S bond length is 1.61 Å. In the third N1- site, N1- is bonded in a distorted single-bond geometry to one C4+ and one I1- atom. The N–I bond length is 2.64 Å. In the fourth N1- site, N1- is bonded in a distorted trigonal planar geometry to one Cd2+, one C4+, and one S2- atom. The N–S bond length is 1.81 Å. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a water-like geometry to two N1- atoms. In the second S2- site, S2- is bonded in a 2-coordinate geometry to one Cd2+ and one C4+ atom. There are two inequivalent I1- sites. In the first I1- site, I1- is bonded in a distorted L-shaped geometry to one Cd2+ and one N1- atom. In the second I1- site, I1- is bonded in a distorted water-like geometry to one Cd2+ and one N1- atom.
DOI: 10.17188/1722626
title: Materials Data on Ca5(IrN3)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: 10.17188/1722627
title: Materials Data on K2CeCuBr6 by Materials Project

description: K2CeCuBr6 is (Cubic) Perovskite-derived structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. K1+ is bonded to twelve Br1- atoms to form KBr12 cuboctahedra that share corners with twelve equivalent KBr12 cuboctahedra, faces with six equivalent KBr12 cuboctahedra, faces with four equivalent CeBr6 octahedra, and faces with four equivalent CuBr6 octahedra. There are eight shorter (3.93 Å) and four longer (3.94 Å) K–Br bond lengths. Ce3+ is bonded to six Br1- atoms to form CeBr6 octahedra that share corners with six equivalent CuBr6 octahedra and faces with eight equivalent KBr12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Ce–Br bond lengths are 2.89 Å. Cu1+ is bonded to six Br1- atoms to form CuBr6 octahedra that share corners with six equivalent CeBr6 octahedra and faces with eight equivalent KBr12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.66 Å) and four longer (2.68 Å) Cu–Br bond lengths. There are two inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a distorted linear geometry to four equivalent K1+, one Ce3+, and one Cu1+ atom. In the second Br1- site, Br1- is bonded in a distorted linear geometry to four equivalent K1+, one Ce3+, and one Cu1+ atom.
DOI: 10.17188/1722628
title: Materials Data on LiSbAu2 by Materials Project

description: LiAu2Sb crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two LiAu2Sb ribbons oriented in the (1, 0, 0) direction. Li1+ is bonded in a linear geometry to two equivalent Au1+ atoms. Both Li–Au bond lengths are 2.55 Å. Au1+ is bonded in a linear geometry to one Li1+ and one Sb3- atom. The Au–Sb bond length is 2.63 Å. Sb3- is bonded in a linear geometry to two equivalent Au1+ atoms.
DOI: 10.6084/m9.figshare.13684640
title: Additional file 4 of Human keratinocyte-derived extracellular vesicles activate the MAPKinase pathway and promote cell migration and proliferation in vitro

description: Additional file 4: Supplementary Table 1. HaCaT extracellular vesicle unique proteins identified by comparison against Vesiclepedia.
DOI: 10.6084/m9.figshare.13684640.v1
title: Additional file 4 of Human keratinocyte-derived extracellular vesicles activate the MAPKinase pathway and promote cell migration and proliferation in vitro

description: Additional file 4: Supplementary Table 1. HaCaT extracellular vesicle unique proteins identified by comparison against Vesiclepedia.
DOI: 10.17188/1722629
title: Materials Data on MnP2PbO7 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: 10.17188/1722632
title: Materials Data on LiGdSe2 by Materials Project

description: LiGdSe2 is Caswellsilverite-like structured and crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Li1+ is bonded to six Se2- atoms to form LiSe6 octahedra that share corners with six equivalent LiSe6 octahedra, edges with four equivalent LiSe6 octahedra, and edges with eight equivalent GdSe6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.80 Å) and four longer (2.92 Å) Li–Se bond lengths. Gd3+ is bonded to six Se2- atoms to form GdSe6 octahedra that share corners with six equivalent GdSe6 octahedra, edges with four equivalent GdSe6 octahedra, and edges with eight equivalent LiSe6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.80 Å) and four longer (2.92 Å) Gd–Se bond lengths. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded to two equivalent Li1+ and four equivalent Gd3+ atoms to form a mixture of corner and edge-sharing SeLi2Gd4 octahedra. The corner-sharing octahedral tilt angles are 0°. In the second Se2- site, Se2- is bonded to four equivalent Li1+ and two equivalent Gd3+ atoms to form SeLi4Gd2 octahedra that share corners with six equivalent SeLi4Gd2 octahedra and edges with twelve SeLi2Gd4 octahedra. The corner-sharing octahedral tilt angles are 0°.
DOI: 10.17188/1722633
title: Materials Data on BaCoBP2HO9 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: 10.17188/1722634
title: Materials Data on Mn2CuSb2Pd by Materials Project

description: Mn2PdCuSb2 is half-Heusler-derived structured and crystallizes in the trigonal R3m space group. The structure is three-dimensional. there are two inequivalent Mn sites. In the first Mn site, Mn is bonded in a 4-coordinate geometry to one Pd, three equivalent Cu, and six Sb atoms. The Mn–Pd bond length is 2.68 Å. All Mn–Cu bond lengths are 2.67 Å. All Mn–Sb bond lengths are 3.07 Å. In the second Mn site, Mn is bonded in a 4-coordinate geometry to three equivalent Pd, one Cu, and six Sb atoms. All Mn–Pd bond lengths are 2.68 Å. The Mn–Cu bond length is 2.67 Å. There are three shorter (3.10 Å) and three longer (3.12 Å) Mn–Sb bond lengths. Pd is bonded in a body-centered cubic geometry to four Mn and four Sb atoms. There are three shorter (2.69 Å) and one longer (2.71 Å) Pd–Sb bond lengths. Cu is bonded in a body-centered cubic geometry to four Mn and four Sb atoms. There are one shorter (2.63 Å) and three longer (2.67 Å) Cu–Sb bond lengths. There are two inequivalent Sb sites. In the first Sb site, Sb is bonded in a 10-coordinate geometry to six Mn, three equivalent Pd, and one Cu atom. In the second Sb site, Sb is bonded in a 10-coordinate geometry to six Mn, one Pd, and three equivalent Cu atoms.
DOI: 10.17188/1722635
title: Materials Data on Ca3Si4 by Materials Project

description: Ca3Si4 crystallizes in the hexagonal P6_3/m space group. The structure is three-dimensional. there are four inequivalent Ca sites. In the first Ca site, Ca is bonded in an octahedral geometry to six equivalent Si atoms. All Ca–Si bond lengths are 3.17 Å. In the second Ca site, Ca is bonded in a 2-coordinate geometry to eleven Si atoms. There are a spread of Ca–Si bond distances ranging from 2.88–3.21 Å. In the third Ca site, Ca is bonded in a 1-coordinate geometry to nine Si atoms. There are a spread of Ca–Si bond distances ranging from 2.95–3.39 Å. In the fourth Ca site, Ca is bonded in a 3-coordinate geometry to nine Si atoms. There are three shorter (3.06 Å) and six longer (3.42 Å) Ca–Si bond lengths. There are four inequivalent Si sites. In the first Si site, Si is bonded in a 9-coordinate geometry to six Ca and three Si atoms. There are two shorter (2.38 Å) and one longer (2.40 Å) Si–Si bond lengths. In the second Si site, Si is bonded in a 9-coordinate geometry to six equivalent Ca and three equivalent Si atoms. In the third Si site, Si is bonded in a 10-coordinate geometry to seven Ca and three equivalent Si atoms. All Si–Si bond lengths are 2.56 Å. In the fourth Si site, Si is bonded in a 9-coordinate geometry to seven Ca and two Si atoms.
DOI: 10.17188/1722636
title: Materials Data on Na2MnPHO3F4 by Materials Project

description: Na2MnPHO3F4 crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. there are two inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded to two equivalent O2- and four F1- atoms to form distorted NaO2F4 octahedra that share corners with two equivalent MnO2F4 octahedra, corners with four equivalent PO3F tetrahedra, and edges with two equivalent NaO2F4 octahedra. The corner-sharing octahedral tilt angles are 60°. Both Na–O bond lengths are 2.72 Å. There are two shorter (2.24 Å) and two longer (2.53 Å) Na–F bond lengths. In the second Na1+ site, Na1+ is bonded in a 3-coordinate geometry to six F1- atoms. There are a spread of Na–F bond distances ranging from 2.32–2.89 Å. Mn2+ is bonded to two equivalent O2- and four F1- atoms to form MnO2F4 octahedra that share corners with two equivalent NaO2F4 octahedra, corners with two equivalent MnO2F4 octahedra, and corners with two equivalent PO3F tetrahedra. The corner-sharing octahedra tilt angles range from 54–60°. Both Mn–O bond lengths are 2.16 Å. There are two shorter (2.10 Å) and two longer (2.23 Å) Mn–F bond lengths. P5+ is bonded to three O2- and one F1- atom to form PO3F tetrahedra that share corners with two equivalent MnO2F4 octahedra and corners with four equivalent NaO2F4 octahedra. The corner-sharing octahedra tilt angles range from 44–64°. There is two shorter (1.50 Å) and one longer (1.57 Å) P–O bond length. The P–F bond length is 1.64 Å. H1+ is bonded in a linear geometry to one O2- and one F1- atom. The H–O bond length is 1.04 Å. The H–F bond length is 1.43 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two equivalent Na1+, one P5+, and one H1+ atom. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Mn2+ and one P5+ atom. There are three inequivalent F1- sites. In the first F1- site, F1- is bonded in a 3-coordinate geometry to three Na1+ and one Mn2+ atom. In the second F1- site, F1- is bonded to one Na1+, two equivalent Mn2+, and one H1+ atom to form distorted corner-sharing FNaMn2H tetrahedra. In the third F1- site, F1- is bonded in a 1-coordinate geometry to three Na1+ and one P5+ atom.
DOI: 10.17188/1722637
title: Materials Data on K3TaO2F7 by Materials Project

description: K3TaO2F7 crystallizes in the orthorhombic Pna2_1 space group. The structure is three-dimensional. there are three inequivalent K sites. In the first K site, K is bonded in a 6-coordinate geometry to six F atoms. There are a spread of K–F bond distances ranging from 2.60–3.13 Å. In the second K site, K is bonded in a 8-coordinate geometry to one O and seven F atoms. The K–O bond length is 2.97 Å. There are a spread of K–F bond distances ranging from 2.49–3.13 Å. In the third K site, K is bonded in a 6-coordinate geometry to one O and five F atoms. The K–O bond length is 3.02 Å. There are a spread of K–F bond distances ranging from 2.48–2.92 Å. Ta is bonded in a distorted pentagonal bipyramidal geometry to two O and five F atoms. Both Ta–O bond lengths are 2.12 Å. There are a spread of Ta–F bond distances ranging from 1.92–1.96 Å. There are two inequivalent O sites. In the first O site, O is bonded in a 3-coordinate geometry to one K, one Ta, and one O atom. The O–O bond length is 1.37 Å. In the second O site, O is bonded in a 3-coordinate geometry to one K, one Ta, and one O atom. There are seven inequivalent F sites. In the first F site, F is bonded in a distorted single-bond geometry to two K and one Ta atom. In the second F site, F is bonded in a distorted single-bond geometry to two K and one Ta atom. In the third F site, F is bonded in a distorted single-bond geometry to two K and one Ta atom. In the fourth F site, F is bonded in a distorted rectangular see-saw-like geometry to four K atoms. In the fifth F site, F is bonded to four K atoms to form distorted edge-sharing FK4 tetrahedra. In the sixth F site, F is bonded in a distorted trigonal non-coplanar geometry to two K and one Ta atom. In the seventh F site, F is bonded in a distorted single-bond geometry to two K and one Ta atom.