Materials Data on K3Ta2AsSe11 by Materials Project

doi:10.17188/1283789

Title: Materials Data on K3Ta2AsSe11 by Materials Project

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Abstract

K3Ta2AsSe11 crystallizes in the monoclinic Cc space group. The structure is three-dimensional. there are three inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 9-coordinate geometry to nine Se+1.45- atoms. There are a spread of K–Se bond distances ranging from 3.39–3.72 Å. In the second K1+ site, K1+ is bonded in a 10-coordinate geometry to ten Se+1.45- atoms. There are a spread of K–Se bond distances ranging from 3.45–4.04 Å. In the third K1+ site, K1+ is bonded in a 10-coordinate geometry to ten Se+1.45- atoms. There are a spread of K–Se bond distances ranging from 3.32–4.07 Å. There are two inequivalent Ta5+ sites. In the first Ta5+ site, Ta5+ is bonded to seven Se+1.45- atoms to form distorted face-sharing TaSe7 pentagonal bipyramids. There are a spread of Ta–Se bond distances ranging from 2.37–2.93 Å. In the second Ta5+ site, Ta5+ is bonded to seven Se+1.45- atoms to form distorted face-sharing TaSe7 pentagonal bipyramids. There are a spread of Ta–Se bond distances ranging from 2.37–2.88 Å. As3+ is bonded in a distorted trigonal non-coplanar geometry to three Se+1.45- atoms. There are a spread of As–Se bond distances ranging from 2.41–2.48 Å. There are eleven inequivalent Se+1.45-more »« less

Authors:: The Materials Project

Publication Date:: Sun May 03 00:00:00 EDT 2020

Other Number(s):: mp-683905

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; K3Ta2AsSe11; As-K-Se-Ta

OSTI Identifier:: 1283789

DOI:: https://doi.org/10.17188/1283789

Citation Formats


                    The Materials Project. Materials Data on K3Ta2AsSe11 by Materials Project.  United States: N. p., 2020. 
        Web.  doi:10.17188/1283789.

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                    The Materials Project. Materials Data on K3Ta2AsSe11 by Materials Project.  United States.  doi:https://doi.org/10.17188/1283789

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                    The Materials Project. 2020.  
"Materials Data on K3Ta2AsSe11 by Materials Project".  United States.  doi:https://doi.org/10.17188/1283789.  https://www.osti.gov/servlets/purl/1283789. Pub date:Sun May 03 00:00:00 EDT 2020

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@article{osti_1283789,

  title        = {Materials Data on K3Ta2AsSe11 by Materials Project},

  author       = {The Materials Project},

  abstractNote = {K3Ta2AsSe11 crystallizes in the monoclinic Cc space group. The structure is three-dimensional. there are three inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 9-coordinate geometry to nine Se+1.45- atoms. There are a spread of K–Se bond distances ranging from 3.39–3.72 Å. In the second K1+ site, K1+ is bonded in a 10-coordinate geometry to ten Se+1.45- atoms. There are a spread of K–Se bond distances ranging from 3.45–4.04 Å. In the third K1+ site, K1+ is bonded in a 10-coordinate geometry to ten Se+1.45- atoms. There are a spread of K–Se bond distances ranging from 3.32–4.07 Å. There are two inequivalent Ta5+ sites. In the first Ta5+ site, Ta5+ is bonded to seven Se+1.45- atoms to form distorted face-sharing TaSe7 pentagonal bipyramids. There are a spread of Ta–Se bond distances ranging from 2.37–2.93 Å. In the second Ta5+ site, Ta5+ is bonded to seven Se+1.45- atoms to form distorted face-sharing TaSe7 pentagonal bipyramids. There are a spread of Ta–Se bond distances ranging from 2.37–2.88 Å. As3+ is bonded in a distorted trigonal non-coplanar geometry to three Se+1.45- atoms. There are a spread of As–Se bond distances ranging from 2.41–2.48 Å. There are eleven inequivalent Se+1.45- sites. In the first Se+1.45- site, Se+1.45- is bonded in a 1-coordinate geometry to two K1+, one Ta5+, and one Se+1.45- atom. The Se–Se bond length is 2.39 Å. In the second Se+1.45- site, Se+1.45- is bonded in a distorted L-shaped geometry to three K1+, one Ta5+, and one As3+ atom. In the third Se+1.45- site, Se+1.45- is bonded in a 2-coordinate geometry to four K1+ and two Ta5+ atoms. In the fourth Se+1.45- site, Se+1.45- is bonded in a 1-coordinate geometry to three K1+ and one Ta5+ atom. In the fifth Se+1.45- site, Se+1.45- is bonded in a 4-coordinate geometry to two equivalent K1+, one Ta5+, and one As3+ atom. In the sixth Se+1.45- site, Se+1.45- is bonded in a 2-coordinate geometry to two K1+, one Ta5+, and one Se+1.45- atom. The Se–Se bond length is 2.41 Å. In the seventh Se+1.45- site, Se+1.45- is bonded in a 2-coordinate geometry to two K1+, two Ta5+, and one Se+1.45- atom. In the eighth Se+1.45- site, Se+1.45- is bonded in a 1-coordinate geometry to four K1+ and one Ta5+ atom. In the ninth Se+1.45- site, Se+1.45- is bonded in an L-shaped geometry to one K1+, one Ta5+, and one As3+ atom. In the tenth Se+1.45- site, Se+1.45- is bonded in a distorted single-bond geometry to four K1+ and one Ta5+ atom. In the eleventh Se+1.45- site, Se+1.45- is bonded in a 2-coordinate geometry to two K1+, two Ta5+, and one Se+1.45- atom.},

  doi          = {10.17188/1283789},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Sun May 03 00:00:00 EDT 2020},

  month        = {Sun May 03 00:00:00 EDT 2020}

}

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DOI: https://doi.org/10.17188/1283789

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