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Na4Pb2Br9

Alexandria ALEX

Alex-ID: agm005640145 · Space group: P-3c1 (#165)

Basic Information

Formula
Na4Pb2Br9
Alex-ID
agm005640145
Elements
3
Sites
30
Space group
P-3c1 (#165)
Crystal system
trigonal
Volume
1,002.44
ų
Cell a
7.5446
Å
Cell b
7.5443
Å
Cell c
20.3364
Å
α angle
90.01
°
β angle
90.01
°
γ angle
60.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Na4Pb2Br9
Na
8.00 · 26.7%
Pb
4.00 · 13.3%
Br
18.00 · 60.0%

Energy & Stability

Energy above hull
0.0454
eV/atom
Formation energy
-1.1563
eV/atom
Corrected total energy
-90.1851
eV
Raw total energy
-90.1851
eV

Electronic Structure

Indirect band gap
0.0157
eV
Direct band gap
0.0157
eV
DOS at Fermi level
24.4888
Total magnetisation
0.0001
μB

Additional Information

Prototype ID

A2B4C9_0_spg9

Decomposition

NaPbBr3 Br NaBr

Computed at

2023-06-16 22:41:56.417393

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: agm005640145).

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 agm005640145
data_agm005640145
_cell_length_a     7.54460
_cell_length_b     7.54427
_cell_length_c     20.33636
_cell_angle_alpha  90.00628
_cell_angle_beta   90.00635
_cell_angle_gamma  60.00000
_cell_volume       1002.43786
_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 0.33365 0.33331 0.98425 1.00000
  Na2 Na 0.33311 0.33342 0.48434 1.00000
  Na3 Na 0.66635 0.66669 0.01575 1.00000
  Na4 Na 0.33288 0.33335 0.17937 1.00000
  Na5 Na 0.66689 0.66658 0.51566 1.00000
  Na6 Na 0.66634 0.66669 0.32057 1.00000
  Na7 Na 0.33366 0.33331 0.67943 1.00000
  Na8 Na 0.66712 0.66665 0.82063 1.00000
  Pb1 Pb 0.99970 1.00000 0.35039 1.00000
  Pb2 Pb 0.99970 0.00008 0.14960 1.00000
  Pb3 Pb 0.00030 0.00000 0.64961 1.00000
  Pb4 Pb 0.00030 0.99992 0.85040 1.00000
  Br1 Br 0.00040 0.30564 0.75003 1.00000
  Br2 Br 0.30615 0.69413 0.75004 1.00000
  Br3 Br 0.69464 0.99992 0.75001 1.00000
  Br4 Br 0.99960 0.69436 0.24997 1.00000
  Br5 Br 0.69385 0.30587 0.24996 1.00000
  Br6 Br 0.30536 0.00008 0.24999 1.00000
  Br7 Br 0.66816 0.97328 0.41641 1.00000
  Br8 Br 0.97309 0.35834 0.41637 1.00000
  Br9 Br 0.35813 0.66850 0.41646 1.00000
  Br10 Br 0.64136 0.02681 0.08356 1.00000
  Br11 Br 0.33136 0.64161 0.08359 1.00000
  Br12 Br 0.02675 0.33133 0.08342 1.00000
  Br13 Br 0.33184 0.02672 0.58359 1.00000
  Br14 Br 0.02691 0.64166 0.58363 1.00000
  Br15 Br 0.64187 0.33150 0.58354 1.00000
  Br16 Br 0.35864 0.97319 0.91644 1.00000
  Br17 Br 0.66864 0.35839 0.91641 1.00000
  Br18 Br 0.97325 0.66867 0.91658 1.00000
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