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K3(AsSe2)2

Alexandria ALEX

Alex-ID: agm005649455 · Space group: C2/c (#15)

Basic Information

Formula
K3(AsSe2)2
Alex-ID
agm005649455
Elements
3
Sites
18
Space group
C2/c (#15)
Crystal system
monoclinic
Volume
634.92
ų
Cell a
8.6577
Å
Cell b
9.4845
Å
Cell c
9.0823
Å
α angle
121.48
°
β angle
92.91
°
γ angle
90.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
K3(AsSe2)2
K
6.00 · 33.3%
As
4.00 · 22.2%
Se
8.00 · 44.4%

Energy & Stability

Energy above hull
0.0649
eV/atom
Formation energy
-0.6979
eV/atom
Corrected total energy
-65.6983
eV
Raw total energy
-65.6983
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0000
eV
DOS at Fermi level
6.5021
Total magnetisation
-0.0001
μB

Additional Information

Prototype ID

A2B3C4_706_spg15

Decomposition

K4As2Se5 KAsSe2 As

Computed at

2023-06-27 06:22:04.984388

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: agm005649455).

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 agm005649455
data_agm005649455
_cell_length_a     8.65768
_cell_length_b     9.48453
_cell_length_c     9.08233
_cell_angle_alpha  121.47601
_cell_angle_beta   92.91250
_cell_angle_gamma  90.00000
_cell_volume       634.92118
_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
  K1 K 0.13649 0.77955 0.74429 1.00000
  K2 K 0.36351 0.03526 0.25571 1.00000
  K3 K 0.86351 0.22045 0.25571 1.00000
  K4 K 0.63649 0.96474 0.74429 1.00000
  K5 K 0.75000 0.50804 0.00000 1.00000
  K6 K 0.25000 0.49196 1.00000 1.00000
  As1 As 0.52980 0.53833 0.38329 1.00000
  As2 As 0.97020 0.15503 0.61671 1.00000
  As3 As 0.47020 0.46167 0.61671 1.00000
  As4 As 0.02980 0.84497 0.38329 1.00000
  Se1 Se 0.49756 0.71794 0.88362 1.00000
  Se2 Se 0.00244 0.83433 0.11638 1.00000
  Se3 Se 0.50244 0.28206 0.11638 1.00000
  Se4 Se 0.99756 0.16567 0.88362 1.00000
  Se5 Se 0.79703 0.61736 0.43716 1.00000
  Se6 Se 0.70297 0.18020 0.56284 1.00000
  Se7 Se 0.20297 0.38264 0.56284 1.00000
  Se8 Se 0.29703 0.81980 0.43716 1.00000
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