Materials Data on U8TiSe17 by Materials Project

doi:10.17188/1672866

Title: Materials Data on U8TiSe17 by Materials Project

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Abstract

U8TiSe17 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are three inequivalent U+3.75+ sites. In the first U+3.75+ site, U+3.75+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of U–Se bond distances ranging from 2.91–3.05 Å. In the second U+3.75+ site, U+3.75+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of U–Se bond distances ranging from 2.85–2.93 Å. In the third U+3.75+ site, U+3.75+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of U–Se bond distances ranging from 2.82–3.11 Å. Ti4+ is bonded in an octahedral geometry to six Se2- atoms. There are two shorter (2.47 Å) and four longer (2.56 Å) Ti–Se bond lengths. There are seven inequivalent Se2- sites. In the first Se2- site, Se2- is bonded to four U+3.75+ atoms to form distorted SeU4 trigonal pyramids that share corners with two equivalent SeU6 octahedra, corners with six equivalent SeU3Ti tetrahedra, edges with two equivalent SeU3Ti tetrahedra, and an edgeedge with one SeU4 trigonal pyramid. The corner-sharing octahedral tilt angles are 38°. In the second Se2- site, Se2- is bonded to six U+3.75+ atoms to formmore »« less

Authors:: The Materials Project

Publication Date:: 2020-05-05

Other Number(s):: mp-1192621

DOE Contract Number:: AC02-05CH11231; EDCBEE

Research Org.:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). LBNL Materials Project

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Collaborations:: MIT; UC Berkeley; Duke; U Louvain

Subject:: 36 MATERIALS SCIENCE

Keywords:: crystal structure; U8TiSe17; Se-Ti-U

OSTI Identifier:: 1672866

DOI:: https://doi.org/10.17188/1672866

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                    The Materials Project. Materials Data on U8TiSe17 by Materials Project.  United States: N. p., 2020. 
        Web.  doi:10.17188/1672866.

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                    The Materials Project. Materials Data on U8TiSe17 by Materials Project.  United States.  doi:https://doi.org/10.17188/1672866

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                    The Materials Project. 2020.  
"Materials Data on U8TiSe17 by Materials Project".  United States.  doi:https://doi.org/10.17188/1672866.  https://www.osti.gov/servlets/purl/1672866. Pub date:Tue May 05 00:00:00 EDT 2020

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@article{osti_1672866,

  title        = {Materials Data on U8TiSe17 by Materials Project},

  author       = {The Materials Project},

  abstractNote = {U8TiSe17 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are three inequivalent U+3.75+ sites. In the first U+3.75+ site, U+3.75+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of U–Se bond distances ranging from 2.91–3.05 Å. In the second U+3.75+ site, U+3.75+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of U–Se bond distances ranging from 2.85–2.93 Å. In the third U+3.75+ site, U+3.75+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of U–Se bond distances ranging from 2.82–3.11 Å. Ti4+ is bonded in an octahedral geometry to six Se2- atoms. There are two shorter (2.47 Å) and four longer (2.56 Å) Ti–Se bond lengths. There are seven inequivalent Se2- sites. In the first Se2- site, Se2- is bonded to four U+3.75+ atoms to form distorted SeU4 trigonal pyramids that share corners with two equivalent SeU6 octahedra, corners with six equivalent SeU3Ti tetrahedra, edges with two equivalent SeU3Ti tetrahedra, and an edgeedge with one SeU4 trigonal pyramid. The corner-sharing octahedral tilt angles are 38°. In the second Se2- site, Se2- is bonded to six U+3.75+ atoms to form SeU6 octahedra that share corners with four equivalent SeU3Ti tetrahedra and corners with four equivalent SeU4 trigonal pyramids. In the third Se2- site, Se2- is bonded in a rectangular see-saw-like geometry to four U+3.75+ atoms. In the fourth Se2- site, Se2- is bonded to three U+3.75+ and one Ti4+ atom to form distorted SeU3Ti tetrahedra that share a cornercorner with one SeU6 octahedra, corners with five equivalent SeU3Ti tetrahedra, corners with three equivalent SeU4 trigonal pyramids, edges with two equivalent SeU3Ti tetrahedra, and an edgeedge with one SeU4 trigonal pyramid. The corner-sharing octahedral tilt angles are 53°. In the fifth Se2- site, Se2- is bonded in a distorted rectangular see-saw-like geometry to three U+3.75+ and one Ti4+ atom. In the sixth Se2- site, Se2- is bonded in a rectangular see-saw-like geometry to four U+3.75+ atoms. In the seventh Se2- site, Se2- is bonded in a distorted rectangular see-saw-like geometry to four U+3.75+ atoms.},

  doi          = {10.17188/1672866},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {2020},

  month        = {5}

}

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DOI: https://doi.org/10.17188/1672866

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