Materials Data on Na2Ca(Ge3O7)2 by Materials Project

doi:10.17188/1752776

Title: Materials Data on Na2Ca(Ge3O7)2 by Materials Project

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Abstract

Na2CaGe6O14 is Esseneite-like structured and crystallizes in the monoclinic C2 space group. The structure is three-dimensional. Na1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Na–O bond distances ranging from 2.46–2.90 Å. Ca2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ca–O bond distances ranging from 2.44–2.79 Å. There are four inequivalent Ge4+ sites. In the first Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with two equivalent GeO6 octahedra and corners with two equivalent GeO4 tetrahedra. The corner-sharing octahedra tilt angles range from 60–62°. There are a spread of Ge–O bond distances ranging from 1.77–1.80 Å. In the second Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with two equivalent GeO6 octahedra and corners with two equivalent GeO4 tetrahedra. The corner-sharing octahedral tilt angles are 61°. There is two shorter (1.77 Å) and two longer (1.81 Å) Ge–O bond length. In the third Ge4+ site, Ge4+ is bonded to six O2- atoms to form corner-sharing GeO6 octahedra. There are a spread of Ge–O bond distances ranging from 1.92–1.95 Å.more »« less

Authors:: The Materials Project

Publication Date:: 2020-05-02

Other Number(s):: mp-1221459

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; Na2Ca(Ge3O7)2; Ca-Ge-Na-O

OSTI Identifier:: 1752776

DOI:: https://doi.org/10.17188/1752776

Citation Formats


                    The Materials Project. Materials Data on Na2Ca(Ge3O7)2 by Materials Project.  United States: N. p., 2020. 
        Web.  doi:10.17188/1752776.

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                    The Materials Project. Materials Data on Na2Ca(Ge3O7)2 by Materials Project.  United States.  doi:https://doi.org/10.17188/1752776

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                    The Materials Project. 2020.  
"Materials Data on Na2Ca(Ge3O7)2 by Materials Project".  United States.  doi:https://doi.org/10.17188/1752776.  https://www.osti.gov/servlets/purl/1752776. Pub date:Sat May 02 00:00:00 EDT 2020

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@article{osti_1752776,

  title        = {Materials Data on Na2Ca(Ge3O7)2 by Materials Project},

  author       = {The Materials Project},

  abstractNote = {Na2CaGe6O14 is Esseneite-like structured and crystallizes in the monoclinic C2 space group. The structure is three-dimensional. Na1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Na–O bond distances ranging from 2.46–2.90 Å. Ca2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ca–O bond distances ranging from 2.44–2.79 Å. There are four inequivalent Ge4+ sites. In the first Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with two equivalent GeO6 octahedra and corners with two equivalent GeO4 tetrahedra. The corner-sharing octahedra tilt angles range from 60–62°. There are a spread of Ge–O bond distances ranging from 1.77–1.80 Å. In the second Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with two equivalent GeO6 octahedra and corners with two equivalent GeO4 tetrahedra. The corner-sharing octahedral tilt angles are 61°. There is two shorter (1.77 Å) and two longer (1.81 Å) Ge–O bond length. In the third Ge4+ site, Ge4+ is bonded to six O2- atoms to form corner-sharing GeO6 octahedra. There are a spread of Ge–O bond distances ranging from 1.92–1.95 Å. In the fourth Ge4+ site, Ge4+ is bonded to four O2- atoms to form corner-sharing GeO4 tetrahedra. There are a spread of Ge–O bond distances ranging from 1.70–1.81 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to one Na1+ and two Ge4+ atoms. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to one Na1+ and two Ge4+ atoms. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to one Ca2+ and two Ge4+ atoms. In the fourth O2- site, O2- is bonded to two equivalent Na1+, one Ca2+, and one Ge4+ atom to form distorted corner-sharing ONa2CaGe tetrahedra. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to one Na1+, one Ca2+, and two Ge4+ atoms. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Na1+ and two Ge4+ atoms. In the seventh O2- site, O2- is bonded in a 2-coordinate geometry to one Na1+, one Ca2+, and two Ge4+ atoms.},

  doi          = {10.17188/1752776},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {2020},

  month        = {5}

}

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DOI: https://doi.org/10.17188/1752776

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