Materials Data on K2MgH4 by Materials Project

doi:10.17188/1199829

Title: Materials Data on K2MgH4 by Materials Project

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Abstract

K2MgH4 is (La,Ba)CuO4 structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. K1+ is bonded in a distorted q6 geometry to nine H1- atoms. There are four shorter (2.82 Å) and five longer (2.86 Å) K–H bond lengths. Mg2+ is bonded to six H1- atoms to form corner-sharing MgH6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.01 Å) and four longer (2.02 Å) Mg–H bond lengths. There are two inequivalent H1- sites. In the first H1- site, H1- is bonded to five equivalent K1+ and one Mg2+ atom to form distorted HK5Mg octahedra that share corners with seventeen HK5Mg octahedra, edges with eight equivalent HK5Mg octahedra, and faces with four equivalent HK4Mg2 octahedra. The corner-sharing octahedra tilt angles range from 0–59°. In the second H1- site, H1- is bonded to four equivalent K1+ and two equivalent Mg2+ atoms to form distorted HK4Mg2 octahedra that share corners with fourteen HK5Mg octahedra, edges with two equivalent HK4Mg2 octahedra, and faces with eight HK5Mg octahedra. The corner-sharing octahedra tilt angles range from 0–59°.

Authors:: The Materials Project

Publication Date:: Thu Jul 16 00:00:00 EDT 2020

Other Number(s):: mp-23956

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; K2MgH4; H-K-Mg

OSTI Identifier:: 1199829

DOI:: https://doi.org/10.17188/1199829

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                    The Materials Project. Materials Data on K2MgH4 by Materials Project.  United States: N. p., 2020. 
        Web.  doi:10.17188/1199829.

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                    The Materials Project. Materials Data on K2MgH4 by Materials Project.  United States.  doi:https://doi.org/10.17188/1199829

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                    The Materials Project. 2020.  
"Materials Data on K2MgH4 by Materials Project".  United States.  doi:https://doi.org/10.17188/1199829.  https://www.osti.gov/servlets/purl/1199829. Pub date:Thu Jul 16 00:00:00 EDT 2020

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@article{osti_1199829,

  title        = {Materials Data on K2MgH4 by Materials Project},

  author       = {The Materials Project},

  abstractNote = {K2MgH4 is (La,Ba)CuO4 structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. K1+ is bonded in a distorted q6 geometry to nine H1- atoms. There are four shorter (2.82 Å) and five longer (2.86 Å) K–H bond lengths. Mg2+ is bonded to six H1- atoms to form corner-sharing MgH6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.01 Å) and four longer (2.02 Å) Mg–H bond lengths. There are two inequivalent H1- sites. In the first H1- site, H1- is bonded to five equivalent K1+ and one Mg2+ atom to form distorted HK5Mg octahedra that share corners with seventeen HK5Mg octahedra, edges with eight equivalent HK5Mg octahedra, and faces with four equivalent HK4Mg2 octahedra. The corner-sharing octahedra tilt angles range from 0–59°. In the second H1- site, H1- is bonded to four equivalent K1+ and two equivalent Mg2+ atoms to form distorted HK4Mg2 octahedra that share corners with fourteen HK5Mg octahedra, edges with two equivalent HK4Mg2 octahedra, and faces with eight HK5Mg octahedra. The corner-sharing octahedra tilt angles range from 0–59°.},

  doi          = {10.17188/1199829},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Thu Jul 16 00:00:00 EDT 2020},

  month        = {Thu Jul 16 00:00:00 EDT 2020}

}

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DOI: https://doi.org/10.17188/1199829

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