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Na2Si12Pt7

Alexandria ALEX

Alex-ID: agm005671613 · Space group: P-3 (#147)

Basic Information

Formula
Na2Si12Pt7
Alex-ID
agm005671613
Elements
3
Sites
21
Space group
P-3 (#147)
Crystal system
trigonal
Volume
343.31
ų
Cell a
3.8404
Å
Cell b
10.1600
Å
Cell c
10.1600
Å
α angle
120.00
°
β angle
90.00
°
γ angle
90.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Na2Si12Pt7
Na
2.00 · 9.5%
Si
12.00 · 57.1%
Pt
7.00 · 33.3%

Energy & Stability

Energy above hull
0.1274
eV/atom
Formation energy
-0.3979
eV/atom
Corrected total energy
-118.6873
eV
Raw total energy
-118.6872
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0063
eV
DOS at Fermi level
8.0920
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

A2B7C12_5_spg147

Decomposition

Na(SiPt)4 Na3(SiPt)4 Si

Computed at

2023-06-21 08:03:37.190589

Citation

Alexandria website
https://alexandria.icams.rub.de/
Attribution

The crystal structure and related material properties of this entry were obtained from the Alexandria database (Alex-ID: agm005671613).

Reference

Th. Cavignac, J. Schmidt, P.-P. De Breuck, A. Loew, T. F. T. Cerqueira, H.-C. Wang, A. Bochkarev, Y. Lysogorskiy, A. H. Romero, R. Drautz, S. Botti and M. A. L. Marques. AI-Driven expansion and application of the Alexandria database. J. Phys. Mater. 9, 025014 (2026). https://doi.org/10.1088/2515-7639/ae6620

BibTeX
@article{Cavignac2026Alexandria,
  author  = {Cavignac, Th{\'e}o and Schmidt, Jonathan and De Breuck, Pierre-Paul and Loew, Antoine
             and Cerqueira, Tiago F. T. and Wang, Hai-Chen and Bochkarev, Anton
             and Lysogorskiy, Yury and Romero, Aldo H. and Drautz, Ralf and Botti, Silvana
             and Marques, Miguel A. L.},
  title   = {{AI}-Driven expansion and application of the {A}lexandria database},
  journal = {Journal of Physics: Materials},
  year    = {2026},
  volume  = {9},
  number  = {2},
  pages   = {025014},
  doi     = {10.1088/2515-7639/ae6620},
  url     = {https://doi.org/10.1088/2515-7639/ae6620}
}

3D Crystal Structure Rendering

Loading 3D structure…

Style: Ball & Stick
Raw CIF Data
# CIF generated by HEAS from Alexandria entry agm005671613
data_agm005671613
_cell_length_a     3.84039
_cell_length_b     10.15996
_cell_length_c     10.15997
_cell_angle_alpha  120.00000
_cell_angle_beta   89.99999
_cell_angle_gamma  90.00000
_cell_volume       343.31354
_symmetry_space_group_name_H-M 'P 1'
_symmetry_Int_Tables_number 1
loop_
_symmetry_equiv_pos_as_xyz
  'x, y, z'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
  Na1 Na 0.26306 0.33333 0.66667 1.00000
  Na2 Na 0.73694 0.66667 0.33333 1.00000
  Si1 Si 0.25864 0.62174 0.06982 1.00000
  Si2 Si 0.25864 0.44808 0.37826 1.00000
  Si3 Si 0.25864 0.93018 0.55192 1.00000
  Si4 Si 0.74136 0.37826 0.93018 1.00000
  Si5 Si 0.74136 0.55192 0.62174 1.00000
  Si6 Si 0.74136 0.06982 0.44808 1.00000
  Si7 Si 0.27459 0.11724 0.26603 1.00000
  Si8 Si 0.27459 0.14879 0.88276 1.00000
  Si9 Si 0.27459 0.73397 0.85121 1.00000
  Si10 Si 0.72541 0.88276 0.73397 1.00000
  Si11 Si 0.72541 0.85121 0.11724 1.00000
  Si12 Si 0.72541 0.26603 0.14879 1.00000
  Pt1 Pt 0.50000 0.00000 0.00000 1.00000
  Pt2 Pt 0.21705 0.89187 0.29208 1.00000
  Pt3 Pt 0.21705 0.40021 0.10813 1.00000
  Pt4 Pt 0.21705 0.70792 0.59979 1.00000
  Pt5 Pt 0.78295 0.10813 0.70792 1.00000
  Pt6 Pt 0.78295 0.59979 0.89187 1.00000
  Pt7 Pt 0.78295 0.29208 0.40021 1.00000
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