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KFeS2O9

Alexandria ALEX

Alex-ID: agm005227666 · Space group: P2_1/m (#11)

Basic Information

Formula
KFeS2O9
Alex-ID
agm005227666
Elements
4
Sites
26
Space group
P2_1/m (#11)
Crystal system
monoclinic
Volume
389.88
ų
Cell a
5.2261
Å
Cell b
8.3480
Å
Cell c
8.9391
Å
α angle
88.61
°
β angle
90.00
°
γ angle
90.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
KFeS2O9
K
2.00 · 7.7%
Fe
2.00 · 7.7%
S
4.00 · 15.4%
O
18.00 · 69.2%

Energy & Stability

Energy above hull
0.1030
eV/atom
Formation energy
-1.9143
eV/atom
Corrected total energy
-174.6594
eV
Raw total energy
-153.8984
eV

Electronic Structure

Indirect band gap
1.2391
eV
Direct band gap
1.2398
eV
DOS at Fermi level
-0.0017
Total magnetisation
10.0353
μB

Additional Information

Prototype ID

ABC2D9_41_spg11

Decomposition

Fe2(SO4)3 KFe(SO4)2 SO12 KO12

Computed at

2023-05-11 02:01:03.006546

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: agm005227666).

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 agm005227666
data_agm005227666
_cell_length_a     5.22613
_cell_length_b     8.34805
_cell_length_c     8.93905
_cell_angle_alpha  88.60880
_cell_angle_beta   90.00000
_cell_angle_gamma  90.00000
_cell_volume       389.87751
_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 0.75000 0.53231 0.77601 1.00000
  K2 K 0.25000 0.46769 0.22399 1.00000
  Fe1 Fe 0.75000 0.00069 0.76009 1.00000
  Fe2 Fe 0.25000 0.99931 0.23991 1.00000
  S1 S 0.75000 0.74269 0.35075 1.00000
  S2 S 0.25000 0.25731 0.64925 1.00000
  S3 S 0.75000 0.19395 0.09263 1.00000
  S4 S 0.25000 0.80605 0.90737 1.00000
  O1 O 0.75000 0.77714 0.52971 1.00000
  O2 O 0.25000 0.22286 0.47029 1.00000
  O3 O 0.75000 0.56903 0.35482 1.00000
  O4 O 0.25000 0.43097 0.64518 1.00000
  O5 O 0.98335 0.81238 0.28547 1.00000
  O6 O 0.48335 0.18762 0.71453 1.00000
  O7 O 0.01665 0.18762 0.71453 1.00000
  O8 O 0.51665 0.81238 0.28547 1.00000
  O9 O 0.75000 0.07313 0.97400 1.00000
  O10 O 0.25000 0.92687 0.02600 1.00000
  O11 O 0.75000 0.35913 0.03520 1.00000
  O12 O 0.25000 0.64087 0.96480 1.00000
  O13 O 0.98200 0.16796 0.18956 1.00000
  O14 O 0.48200 0.83204 0.81044 1.00000
  O15 O 0.01800 0.83204 0.81044 1.00000
  O16 O 0.51800 0.16796 0.18956 1.00000
  O17 O 0.75000 0.94859 0.55171 1.00000
  O18 O 0.25000 0.05141 0.44829 1.00000
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