Navigation

HEAS Data Platform · Materials Science Database

Mg2As2H7

Alexandria ALEX

Alex-ID: agm006284499 · Space group: P1 (#1)

Basic Information

Formula
Mg2As2H7
Alex-ID
agm006284499
Elements
3
Sites
22
Space group
P1 (#1)
Crystal system
triclinic
Volume
365.43
ų
Cell a
6.1578
Å
Cell b
8.2566
Å
Cell c
9.1519
Å
α angle
61.84
°
β angle
68.48
°
γ angle
65.82
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Mg2As2H7
Mg
4.00 · 18.2%
As
4.00 · 18.2%
H
14.00 · 63.6%

Energy & Stability

Energy above hull
0.1617
eV/atom
Formation energy
-0.0757
eV/atom
Corrected total energy
-71.9980
eV
Raw total energy
-71.9980
eV

Electronic Structure

Indirect band gap
2.9244
eV
Direct band gap
2.9244
eV
DOS at Fermi level
0.0000
Total magnetisation
0.0002
μB

Additional Information

Prototype ID

A2B2C7_1903_spg1

Decomposition

MgH6 AsH9 Mg3As2

Computed at

2025-05-28 03:21:46

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: agm006284499).

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 agm006284499
data_agm006284499
_cell_length_a     6.15775
_cell_length_b     8.25660
_cell_length_c     9.15194
_cell_angle_alpha  61.83842
_cell_angle_beta   68.48052
_cell_angle_gamma  65.82493
_cell_volume       365.42917
_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
  Mg1 Mg 0.70259 0.05941 0.14663 1.00000
  Mg2 Mg 0.13201 0.20176 0.13800 1.00000
  Mg3 Mg 0.04835 0.64203 0.09730 1.00000
  Mg4 Mg 0.28715 0.07439 0.48953 1.00000
  As1 As 0.39190 0.55279 0.30149 1.00000
  As2 As 0.59382 0.17068 0.71473 1.00000
  As3 As 0.28924 0.76365 0.77528 1.00000
  As4 As 0.06326 0.41861 0.52070 1.00000
  H1 H 0.24554 0.63227 0.72038 1.00000
  H2 H 0.44447 0.02771 0.83720 1.00000
  H3 H 0.42481 0.49040 0.15512 1.00000
  H4 H 0.45041 0.20665 0.03534 1.00000
  H5 H 0.70955 0.06352 0.59148 1.00000
  H6 H 0.80545 0.04582 0.80866 1.00000
  H7 H 0.59830 0.07475 0.35518 1.00000
  H8 H 0.96187 0.44466 0.12431 1.00000
  H9 H 0.89440 0.48286 0.40000 1.00000
  H10 H 0.15305 0.04067 0.35745 1.00000
  H11 H 0.23017 0.75583 0.20601 1.00000
  H12 H 0.55787 0.65057 0.77548 1.00000
  H13 H 0.78139 0.81946 0.15349 1.00000
  H14 H 0.98441 0.13150 0.04623 1.00000
Get direct link