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Li2Al2H7

Alexandria ALEX

Alex-ID: agm005570321 · Space group: C2/m (#12)

Basic Information

Formula
Li2Al2H7
Alex-ID
agm005570321
Elements
3
Sites
22
Space group
C2/m (#12)
Crystal system
monoclinic
Volume
216.44
ų
Cell a
5.3493
Å
Cell b
5.3493
Å
Cell c
8.3751
Å
α angle
103.62
°
β angle
103.62
°
γ angle
102.79
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Li2Al2H7
Li
4.00 · 18.2%
Al
4.00 · 18.2%
H
14.00 · 63.6%

Energy & Stability

Energy above hull
0.1300
eV/atom
Formation energy
-0.1305
eV/atom
Corrected total energy
-70.8647
eV
Raw total energy
-70.8647
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.4366
eV
DOS at Fermi level
1.9007
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

A2B2C7_681_spg12

Decomposition

Li3AlH6 AlH3 Al

Computed at

2023-06-04 14:31:41.743341

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: agm005570321).

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 agm005570321
data_agm005570321
_cell_length_a     5.34925
_cell_length_b     5.34925
_cell_length_c     8.37515
_cell_angle_alpha  103.61668
_cell_angle_beta   103.61668
_cell_angle_gamma  102.78540
_cell_volume       216.43583
_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
  Li1 Li 0.31391 0.68609 0.50001 1.00000
  Li2 Li 0.31391 0.68609 0.99999 1.00000
  Li3 Li 0.68609 0.31391 0.00001 1.00000
  Li4 Li 0.68609 0.31391 0.49999 1.00000
  Al1 Al 0.19959 0.19959 0.16163 1.00000
  Al2 Al 0.19959 0.19959 0.66163 1.00000
  Al3 Al 0.80041 0.80041 0.33837 1.00000
  Al4 Al 0.80041 0.80041 0.83837 1.00000
  H1 H 0.90801 0.55738 0.39460 1.00000
  H2 H 0.09196 0.44259 0.10538 1.00000
  H3 H 0.37959 0.37961 0.36390 1.00000
  H4 H 0.00004 0.99996 0.25000 1.00000
  H5 H 0.55738 0.90801 0.89460 1.00000
  H6 H 0.44259 0.09196 0.60538 1.00000
  H7 H 0.37961 0.37959 0.86390 1.00000
  H8 H 0.62039 0.62041 0.13610 1.00000
  H9 H 0.55741 0.90804 0.39462 1.00000
  H10 H 0.44262 0.09199 0.10540 1.00000
  H11 H 0.99996 0.00004 0.75000 1.00000
  H12 H 0.62041 0.62039 0.63610 1.00000
  H13 H 0.90804 0.55741 0.89462 1.00000
  H14 H 0.09199 0.44262 0.60540 1.00000
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