Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Br”

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.

At least 1,513 records · Page 84

Materials Data on Cd4P2Br3 by Materials Project

Cd4P2Br3 crystallizes in the cubic Pa-3 space group. The structure is three-dimensional. there are two inequivalent Cd2+ sites. In the first Cd2+ site, Cd2+ is bonded in a 4-coordinate geometry to two P+2.50- and two equivalent Br1- atoms. There are one shorter (2.51 Å) and one longer (2.55 Å) Cd–P bond lengths. There are one shorter (2.91 Å) and one longer (3.03 Å) Cd–Br bond lengths. In the second Cd2+ site, Cd2+ is bonded in a rectangular see-saw-like geometry to one P+2.50- and three equivalent Br1- atoms. The Cd–P bond length is 2.50 Å. All Cd–Br bond lengths are 2.78 Å. There are two inequivalent P+2.50- sites. In the first P+2.50- site, P+2.50- is bonded to four Cd2+ atoms to form corner-sharing PCd4 trigonal pyramids. In the second P+2.50- site, P+2.50- is bonded to three equivalent Cd2+ and one P+2.50- atom to form corner-sharing PCd3P tetrahedra. The P–P bond length is 2.20 Å. Br1- is bonded in a distorted trigonal non-coplanar geometry to three Cd2+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Tl5Se2Br by Materials Project

Tl5Se2Br crystallizes in the tetragonal I4/mcm space group. The structure is three-dimensional. there are two inequivalent Tl1+ sites. In the first Tl1+ site, Tl1+ is bonded to three equivalent Se2- and two equivalent Br1- atoms to form distorted TlSe3Br2 square pyramids that share corners with four equivalent TlSe4Br2 octahedra, corners with twelve equivalent TlSe3Br2 square pyramids, edges with seven equivalent TlSe3Br2 square pyramids, faces with two equivalent TlSe4Br2 octahedra, and a faceface with one TlSe3Br2 square pyramid. The corner-sharing octahedra tilt angles range from 43–67°. There are one shorter (3.08 Å) and two longer (3.30 Å) Tl–Se bond lengths. Both Tl–Br bond lengths are 3.67 Å. In the second Tl1+ site, Tl1+ is bonded to four equivalent Se2- and two equivalent Br1- atoms to form TlSe4Br2 octahedra that share corners with six equivalent TlSe4Br2 octahedra, corners with sixteen equivalent TlSe3Br2 square pyramids, and faces with eight equivalent TlSe3Br2 square pyramids. The corner-sharing octahedra tilt angles range from 0–40°. All Tl–Se bond lengths are 3.31 Å. Both Tl–Br bond lengths are 3.37 Å. Se2- is bonded in a 8-coordinate geometry to eight Tl1+ atoms. Br1- is bonded in a 10-coordinate geometry to ten Tl1+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Pd(PbBr3)2 by Materials Project

Pd(PbBr3)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Pd2+ is bonded to six Br1- atoms to form distorted corner-sharing PdBr6 octahedra. The corner-sharing octahedral tilt angles are 42°. There are a spread of Pd–Br bond distances ranging from 2.47–3.35 Å. Pb2+ is bonded in a 7-coordinate geometry to seven Br1- atoms. There are a spread of Pb–Br bond distances ranging from 3.01–3.40 Å. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 3-coordinate geometry to three equivalent Pb2+ atoms. In the second Br1- site, Br1- is bonded in a 1-coordinate geometry to two equivalent Pd2+ and two equivalent Pb2+ atoms. In the third Br1- site, Br1- is bonded in a 1-coordinate geometry to one Pd2+ and two equivalent Pb2+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on In7Br9 by Materials Project

In7Br9 crystallizes in the cubic Pa-3 space group. The structure is three-dimensional. there are two inequivalent In+1.29+ sites. In the first In+1.29+ site, In+1.29+ is bonded in a 4-coordinate geometry to four Br1- atoms. There are a spread of In–Br bond distances ranging from 3.08–3.38 Å. In the second In+1.29+ site, In+1.29+ is bonded in an octahedral geometry to six equivalent Br1- atoms. All In–Br bond lengths are 2.73 Å. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a distorted T-shaped geometry to three equivalent In+1.29+ atoms. In the second Br1- site, Br1- is bonded in an octahedral geometry to six equivalent In+1.29+ atoms. In the third Br1- site, Br1- is bonded in a 3-coordinate geometry to three In+1.29+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Li6MgBr8 by Materials Project

Li6MgBr8 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Li1+ is bonded to six Br1- atoms to form LiBr6 octahedra that share corners with six equivalent LiBr6 octahedra, edges with two equivalent MgBr6 octahedra, and edges with eight equivalent LiBr6 octahedra. The corner-sharing octahedra tilt angles range from 0–3°. All Li–Br bond lengths are 2.77 Å. Mg2+ is bonded to six equivalent Br1- atoms to form MgBr6 octahedra that share edges with twelve equivalent LiBr6 octahedra. All Mg–Br bond lengths are 2.69 Å. There are two inequivalent Br1- sites. In the first Br1- site, Br1- is bonded to six equivalent Li1+ atoms to form BrLi6 octahedra that share corners with six equivalent BrLi6 octahedra and edges with twelve equivalent BrLi4Mg square pyramids. The corner-sharing octahedral tilt angles are 0°. In the second Br1- site, Br1- is bonded to four equivalent Li1+ and one Mg2+ atom to form BrLi4Mg square pyramids that share corners with nine equivalent BrLi4Mg square pyramids, edges with four equivalent BrLi6 octahedra, and edges with four equivalent BrLi4Mg square pyramids.

36 MATERIALS SCIENCE↗

Materials Data on Li2MgBr4 by Materials Project

Li2MgBr4 crystallizes in the orthorhombic Cmmm space group. The structure is three-dimensional. Li1+ is bonded to six Br1- atoms to form LiBr6 octahedra that share corners with six equivalent LiBr6 octahedra, edges with four equivalent LiBr6 octahedra, and edges with four equivalent MgBr6 octahedra. The corner-sharing octahedral tilt angles are 4°. There are four shorter (2.77 Å) and two longer (2.79 Å) Li–Br bond lengths. Mg2+ is bonded to six Br1- atoms to form MgBr6 octahedra that share edges with two equivalent MgBr6 octahedra and edges with eight equivalent LiBr6 octahedra. There are two shorter (2.69 Å) and four longer (2.70 Å) Mg–Br bond lengths. There are two inequivalent Br1- sites. In the first Br1- site, Br1- is bonded to four equivalent Li1+ and one Mg2+ atom to form a mixture of corner and edge-sharing BrLi4Mg square pyramids. In the second Br1- site, Br1- is bonded in a rectangular see-saw-like geometry to two equivalent Li1+ and two equivalent Mg2+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on CaThBr6 by Materials Project

CaThBr6 crystallizes in the orthorhombic Pmma space group. The structure is two-dimensional and consists of two CaThBr6 sheets oriented in the (0, 0, 1) direction. Ca2+ is bonded in a 8-coordinate geometry to eight Br1- atoms. There are a spread of Ca–Br bond distances ranging from 2.85–3.19 Å. Th4+ is bonded in a 8-coordinate geometry to eight Br1- atoms. There are a spread of Th–Br bond distances ranging from 2.93–3.04 Å. There are four inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in an L-shaped geometry to two equivalent Ca2+ atoms. In the second Br1- site, Br1- is bonded in a distorted trigonal non-coplanar geometry to one Ca2+ and two equivalent Th4+ atoms. In the third Br1- site, Br1- is bonded in an L-shaped geometry to two equivalent Th4+ atoms. In the fourth Br1- site, Br1- is bonded in a distorted trigonal non-coplanar geometry to two equivalent Ca2+ and one Th4+ atom.

36 MATERIALS SCIENCE↗

Materials Data on SrThBr6 by Materials Project

SrThBr6 crystallizes in the orthorhombic Pmma space group. The structure is two-dimensional and consists of two SrThBr6 sheets oriented in the (0, 0, 1) direction. Sr2+ is bonded in a 8-coordinate geometry to eight Br1- atoms. There are a spread of Sr–Br bond distances ranging from 3.00–3.26 Å. Th4+ is bonded in a 8-coordinate geometry to eight Br1- atoms. There are a spread of Th–Br bond distances ranging from 2.95–3.04 Å. There are four inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a distorted trigonal non-coplanar geometry to one Sr2+ and two equivalent Th4+ atoms. In the second Br1- site, Br1- is bonded in an L-shaped geometry to two equivalent Th4+ atoms. In the third Br1- site, Br1- is bonded in an L-shaped geometry to two equivalent Sr2+ atoms. In the fourth Br1- site, Br1- is bonded in a distorted trigonal non-coplanar geometry to two equivalent Sr2+ and one Th4+ atom.

36 MATERIALS SCIENCE↗

Materials Data on Cd(W3Br7)2 by Materials Project

Cd(W3Br7)2 crystallizes in the cubic Pn-3 space group. The structure is three-dimensional. W2+ is bonded to five Br1- atoms to form WBr5 square pyramids that share a cornercorner with one CdBr6 octahedra and edges with four equivalent WBr5 square pyramids. The corner-sharing octahedral tilt angles are 46°. There are a spread of W–Br bond distances ranging from 2.64–2.66 Å. Cd2+ is bonded to six equivalent Br1- atoms to form CdBr6 octahedra that share corners with six equivalent WBr5 square pyramids. All Cd–Br bond lengths are 2.86 Å. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 12-coordinate geometry to three equivalent W2+ atoms. In the second Br1- site, Br1- is bonded in a distorted bent 120 degrees geometry to one W2+ and one Cd2+ atom. In the third Br1- site, Br1- is bonded in a 12-coordinate geometry to three equivalent W2+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Hg4As2Br3 by Materials Project

Hg4As2Br3 crystallizes in the cubic Pa-3 space group. The structure is three-dimensional. there are two inequivalent Hg2+ sites. In the first Hg2+ site, Hg2+ is bonded in a distorted rectangular see-saw-like geometry to two As+2.50- and two equivalent Br1- atoms. There are one shorter (2.58 Å) and one longer (2.60 Å) Hg–As bond lengths. There are one shorter (2.99 Å) and one longer (3.19 Å) Hg–Br bond lengths. In the second Hg2+ site, Hg2+ is bonded in a distorted rectangular see-saw-like geometry to one As+2.50- and three equivalent Br1- atoms. The Hg–As bond length is 2.57 Å. All Hg–Br bond lengths are 2.84 Å. There are two inequivalent As+2.50- sites. In the first As+2.50- site, As+2.50- is bonded to three equivalent Hg2+ and one As+2.50- atom to form corner-sharing AsHg3As tetrahedra. The As–As bond length is 2.44 Å. In the second As+2.50- site, As+2.50- is bonded to four Hg2+ atoms to form corner-sharing AsHg4 trigonal pyramids. Br1- is bonded in a trigonal non-coplanar geometry to three Hg2+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on CsAlBr4 by Materials Project

CsAlBr4 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Cs1+ is bonded in a 10-coordinate geometry to ten Br1- atoms. There are a spread of Cs–Br bond distances ranging from 3.85–4.28 Å. Al3+ is bonded in a tetrahedral geometry to four Br1- atoms. There are a spread of Al–Br bond distances ranging from 2.31–2.34 Å. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a distorted single-bond geometry to three equivalent Cs1+ and one Al3+ atom. In the second Br1- site, Br1- is bonded in a distorted single-bond geometry to one Cs1+ and one Al3+ atom. In the third Br1- site, Br1- is bonded in a distorted single-bond geometry to three equivalent Cs1+ and one Al3+ atom.

36 MATERIALS SCIENCE↗

Materials Data on Se2Br3N by Materials Project

NSe2Br3 crystallizes in the orthorhombic Pca2_1 space group. The structure is zero-dimensional and consists of eight NSe2Br3 clusters. N1+ is bonded in a bent 120 degrees geometry to two Se2- atoms. Both N–Se bond lengths are 1.77 Å. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a distorted T-shaped geometry to one N1+ and two Br1+ atoms. There are one shorter (2.47 Å) and one longer (2.71 Å) Se–Br bond lengths. In the second Se2- site, Se2- is bonded in a distorted T-shaped geometry to one N1+ and two Br1+ atoms. There are one shorter (2.40 Å) and one longer (2.79 Å) Se–Br bond lengths. There are three inequivalent Br1+ sites. In the first Br1+ site, Br1+ is bonded in a single-bond geometry to one Se2- atom. In the second Br1+ site, Br1+ is bonded in a 2-coordinate geometry to two Se2- atoms. In the third Br1+ site, Br1+ is bonded in a single-bond geometry to one Se2- atom.

36 MATERIALS SCIENCE↗

Materials Data on Bi(TeBr2)2 by Materials Project

BiTeBr4Te crystallizes in the triclinic P-1 space group. The structure is two-dimensional and consists of two tellurium molecules and one BiTeBr4 sheet oriented in the (0, 0, 1) direction. In the BiTeBr4 sheet, Bi2+ is bonded to six Br1- atoms to form edge-sharing BiBr6 octahedra. There are a spread of Bi–Br bond distances ranging from 2.71–3.14 Å. Te1+ is bonded in a distorted bent 120 degrees geometry to two Br1- atoms. There are one shorter (3.23 Å) and one longer (3.42 Å) Te–Br bond lengths. There are four inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 2-coordinate geometry to one Bi2+ and one Te1+ atom. In the second Br1- site, Br1- is bonded in a single-bond geometry to one Bi2+ atom. In the third Br1- site, Br1- is bonded in a distorted water-like geometry to two equivalent Bi2+ atoms. In the fourth Br1- site, Br1- is bonded in a 2-coordinate geometry to two equivalent Bi2+ and one Te1+ atom.

36 MATERIALS SCIENCE↗

Materials Data on Cd2P3Br by Materials Project

Cd2P3Br crystallizes in the monoclinic Cc space group. The structure is three-dimensional. there are two inequivalent Cd2+ sites. In the first Cd2+ site, Cd2+ is bonded to three P1- and two equivalent Br1- atoms to form distorted CdP3Br2 trigonal bipyramids that share corners with six PCd2P2 tetrahedra, corners with seven CdP3Br2 trigonal bipyramids, and an edgeedge with one CdP3Br2 trigonal bipyramid. There are a spread of Cd–P bond distances ranging from 2.59–2.67 Å. There are one shorter (2.89 Å) and one longer (3.31 Å) Cd–Br bond lengths. In the second Cd2+ site, Cd2+ is bonded to three P1- and two equivalent Br1- atoms to form distorted CdP3Br2 trigonal bipyramids that share corners with six PCd2P2 tetrahedra, corners with seven CdP3Br2 trigonal bipyramids, and an edgeedge with one CdP3Br2 trigonal bipyramid. There are a spread of Cd–P bond distances ranging from 2.59–2.68 Å. There are one shorter (2.89 Å) and one longer (3.31 Å) Cd–Br bond lengths. There are three inequivalent P1- sites. In the first P1- site, P1- is bonded to two Cd2+ and two P1- atoms to form distorted PCd2P2 tetrahedra that share corners with six PCd2P2 tetrahedra and corners with four CdP3Br2 trigonal bipyramids. Both P–P bond lengths are 2.21 Å. In the second P1- site, P1- is bonded to two equivalent Cd2+ and two P1- atoms to form distorted PCd2P2 tetrahedra that share corners with six PCd2P2 tetrahedra and corners with four CdP3Br2 trigonal bipyramids. The P–P bond length is 2.20 Å. In the third P1- site, P1- is bonded to two equivalent Cd2+ and two P1- atoms to form distorted PCd2P2 tetrahedra that share corners with six PCd2P2 tetrahedra and corners with four CdP3Br2 trigonal bipyramids. Br1- is bonded in a rectangular see-saw-like geometry to four Cd2+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on TlFeBr4 by Materials Project

FeTlBr4 crystallizes in the orthorhombic Pnna space group. The structure is three-dimensional. Fe3+ is bonded in a tetrahedral geometry to four Br1- atoms. There are two shorter (2.36 Å) and two longer (2.37 Å) Fe–Br bond lengths. Tl1+ is bonded in a 8-coordinate geometry to eight Br1- atoms. There are a spread of Tl–Br bond distances ranging from 3.44–3.62 Å. There are two inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a distorted single-bond geometry to one Fe3+ and two equivalent Tl1+ atoms. In the second Br1- site, Br1- is bonded in a distorted single-bond geometry to one Fe3+ and two equivalent Tl1+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on Rb2WBr6 by Materials Project

Rb2WBr6 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Rb1+ is bonded to twelve equivalent Br1- atoms to form RbBr12 cuboctahedra that share corners with twelve equivalent RbBr12 cuboctahedra, faces with six equivalent RbBr12 cuboctahedra, and faces with four equivalent WBr6 octahedra. All Rb–Br bond lengths are 3.82 Å. W4+ is bonded to six equivalent Br1- atoms to form WBr6 octahedra that share faces with eight equivalent RbBr12 cuboctahedra. All W–Br bond lengths are 2.56 Å. Br1- is bonded to four equivalent Rb1+ and one W4+ atom to form a mixture of distorted corner, edge, and face-sharing BrRb4W square pyramids.

36 MATERIALS SCIENCE↗

Materials Data on MgInBr3 by Materials Project

MgInBr3 crystallizes in the orthorhombic Pnma space group. The structure is one-dimensional and consists of two MgInBr3 ribbons oriented in the (1, 0, 0) direction. Mg2+ is bonded to six Br1- atoms to form edge-sharing MgBr6 octahedra. There are a spread of Mg–Br bond distances ranging from 2.63–2.76 Å. In1+ is bonded in a 2-coordinate geometry to three Br1- atoms. There are two shorter (3.21 Å) and one longer (3.41 Å) In–Br bond lengths. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 3-coordinate geometry to three equivalent Mg2+ atoms. In the second Br1- site, Br1- is bonded in a distorted L-shaped geometry to two equivalent Mg2+ and one In1+ atom. In the third Br1- site, Br1- is bonded in a 1-coordinate geometry to one Mg2+ and two equivalent In1+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on WBr2 by Materials Project

WBr2 crystallizes in the orthorhombic Cmce space group. The structure is two-dimensional and consists of two WBr2 sheets oriented in the (0, 1, 0) direction. there are two inequivalent W2+ sites. In the first W2+ site, W2+ is bonded to five Br1- atoms to form a mixture of edge and corner-sharing WBr5 square pyramids. There are four shorter (2.65 Å) and one longer (2.71 Å) W–Br bond lengths. In the second W2+ site, W2+ is bonded to five Br1- atoms to form edge-sharing WBr5 square pyramids. There are one shorter (2.58 Å) and four longer (2.66 Å) W–Br bond lengths. There are four inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 5-coordinate geometry to three W2+ atoms. In the second Br1- site, Br1- is bonded in a 12-coordinate geometry to three W2+ atoms. In the third Br1- site, Br1- is bonded in a distorted bent 150 degrees geometry to two equivalent W2+ atoms. In the fourth Br1- site, Br1- is bonded in a single-bond geometry to one W2+ atom.

36 MATERIALS SCIENCE↗