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H8C3

Alexandria ALEX

Alex-ID: agm090973104 · Space group: P2_1/c (#14)

Basic Information

Formula
H8C3
Alex-ID
agm090973104
Elements
2
Sites
44
Space group
P2_1/c (#14)
Crystal system
monoclinic
Volume
429.35
ų
Cell a
4.5611
Å
Cell b
13.0606
Å
Cell c
7.2077
Å
α angle
90.00
°
β angle
89.52
°
γ angle
90.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
H8C3
H
32.00 · 72.7%
C
12.00 · 27.3%

Energy & Stability

Energy above hull
0.0261
eV/atom
Formation energy
-0.3155
eV/atom
Corrected total energy
-228.2392
eV
Raw total energy
-228.2392
eV

Electronic Structure

Indirect band gap
6.6627
eV
Direct band gap
6.7637
eV
DOS at Fermi level
0.0000
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

A3B8_391_spg14

Decomposition

H4C C

Computed at

2025-05-28 03:36:46

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: agm090973104).

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 agm090973104
data_agm090973104
_cell_length_a     4.56106
_cell_length_b     13.06062
_cell_length_c     7.20767
_cell_angle_alpha  90.00000
_cell_angle_beta   89.52093
_cell_angle_gamma  90.00000
_cell_volume       429.34768
_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
  H1 H 0.27197 0.05546 0.04355 1.00000
  H2 H 0.72803 0.55546 0.95645 1.00000
  H3 H 0.22714 0.94366 0.45684 1.00000
  H4 H 0.77286 0.44366 0.54316 1.00000
  H5 H 0.93091 0.07626 0.15679 1.00000
  H6 H 0.06909 0.57626 0.84321 1.00000
  H7 H 0.56840 0.92312 0.34375 1.00000
  H8 H 0.43160 0.42312 0.65625 1.00000
  H9 H 0.97050 0.97373 0.99660 1.00000
  H10 H 0.02950 0.47373 0.00340 1.00000
  H11 H 0.52821 0.02548 0.50421 1.00000
  H12 H 0.47179 0.52548 0.49579 1.00000
  H13 H 0.04061 0.09923 0.73544 1.00000
  H14 H 0.95939 0.59923 0.26456 1.00000
  H15 H 0.45842 0.89974 0.76500 1.00000
  H16 H 0.54158 0.39974 0.23500 1.00000
  H17 H 0.70133 0.11869 0.84681 1.00000
  H18 H 0.29867 0.61869 0.15319 1.00000
  H19 H 0.79783 0.88048 0.65357 1.00000
  H20 H 0.20217 0.38048 0.34643 1.00000
  H21 H 0.25938 0.24601 0.91768 1.00000
  H22 H 0.74062 0.74601 0.08232 1.00000
  H23 H 0.24014 0.75303 0.58228 1.00000
  H24 H 0.75986 0.25303 0.41772 1.00000
  H25 H 0.95013 0.28690 0.78916 1.00000
  H26 H 0.04987 0.78690 0.21084 1.00000
  H27 H 0.54953 0.71214 0.71065 1.00000
  H28 H 0.45047 0.21214 0.28935 1.00000
  H29 H 0.91768 0.26490 0.03158 1.00000
  H30 H 0.08232 0.76490 0.96842 1.00000
  H31 H 0.58192 0.73440 0.46832 1.00000
  H32 H 0.41808 0.23440 0.53168 1.00000
  C1 C 0.03280 0.05355 0.02404 1.00000
  C2 C 0.96720 0.55355 0.97596 1.00000
  C3 C 0.46627 0.94565 0.47652 1.00000
  C4 C 0.53373 0.44565 0.52348 1.00000
  C5 C 0.94011 0.12491 0.86705 1.00000
  C6 C 0.05989 0.62491 0.13295 1.00000
  C7 C 0.55907 0.87420 0.63333 1.00000
  C8 C 0.44093 0.37420 0.36667 1.00000
  C9 C 0.02079 0.23673 0.90278 1.00000
  C10 C 0.97921 0.73673 0.09722 1.00000
  C11 C 0.47871 0.76240 0.59721 1.00000
  C12 C 0.52129 0.26240 0.40279 1.00000
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