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HgI

Elasticity Data ELA

MP-ID: mp-22859 · Space group: I4/mmm (#139)

Basic Information

Formula
HgI
MP-ID
mp-22859
Elements
2
Sites
4
Density
7.1876
g/cm³
Volume
151.32
ų
Cell a
5.0704
Å
Cell b
5.0704
Å
Cell c
6.8888
Å
α Angle
111.55
°
β Angle
111.55
°
γ Angle
90.02
°
Space Group
I4/mmm
Point Group
4/mmm
Crystal System
Tetragonal
Bravais Lattice
Tetragonal I
Stability
Yes
Packing Fraction
0.7400

X-ray Diffraction

Diffraction Pattern
X-axis: 2θ (°); Y-axis: relative intensity; CuKa ; λ=1.5406 Å
Diffraction Peaks (Top 24)
2θd (Å)Ihkl
19.05 4.6579 11.1 (1,0,0)
19.05 4.6579 11.1 (0,1,0)
19.06 4.6557 21.8 (1,0,-1)
24.83 3.5860 100.0 (1,-1,0)
24.84 3.5847 99.9 (1,1,-1)
30.37 2.9429 45.2 (0,0,2)
35.41 2.5352 80.5 (2,0,-1)
39.60 2.2756 22.2 (1,1,1)
39.62 2.2749 44.5 (1,-1,2)
39.64 2.2736 22.3 (1,1,-3)
40.51 2.2271 3.7 (2,-1,0)
40.51 2.2268 1.8 (2,-1,-1)
40.51 2.2268 1.8 (1,-2,1)
40.51 2.2267 1.9 (2,1,-1)
40.51 2.2267 1.9 (1,2,-1)
40.53 2.2260 3.5 (2,1,-2)
42.32 2.1359 19.6 (1,0,2)
42.34 2.1349 9.7 (1,0,-3)
42.34 2.1349 9.7 (0,1,-3)
47.31 1.9214 26.7 (2,0,1)
47.34 1.9202 13.5 (2,0,-3)
47.34 1.9202 13.5 (0,2,-3)
50.93 1.7930 14.4 (2,-2,0)
50.95 1.7923 14.4 (2,2,-2)
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Energy Properties

Formation Energy/atom
-0.44357
eV/atom
Energy/atom
-1.36041
eV/atom
Energy above Hull
0.0000
eV/atom
Uncorrected Energy
-37.2674
eV/atom
Volume/atom
37.83
ų
c/a Ratio
1.3586

Electronic Properties

Metallic
Non-metal
Band Gap
1.658
eV
Direct Gap
No
CBM
N/A
eV

Magnetic Properties

Magnetic
Yes
Total Mag. Moment
0.0000
μB
Mag. Ordering
Unknown
Mag. Sites
0
Magnetization/Volume
0.000000
μB/ų

Elastic Properties

KVRH
10.380
GPa
GVRH
4.529
GPa
Young's Modulus E
11.862
GPa
Poisson Ratio ν
0.310
Pugh Ratio K/G
2.292
Vickers Hardness Est.
0.000
GPa
Ductility
Brittle
Anisotropy
11.877
Lame λ
7.361
GPa

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Hg · 0.500
Element Family
5d-TM
Solute Fraction
0.500
Interstitial Fraction
0.000

Elasticity Features

Elastic Modulus Comparison (GPa)
Elastic Features
Elastic Anisotropy AU
11.8770
Homogeneous Poisson ν
0.3100
Debye Temperature
92.7
K
Sound Velocity
887.7
m/s
Homogeneity
0.3100

Related Tasks

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-22859
Reference Citation

The crystal structure and related material properties of HgI were obtained from the Materials Project database (MP-ID: mp-22859, database version v2026.04.13).

Literature Citation

Horton, M.K., Huck, P., Yang, R.X. et al. Accelerated data-driven materials science with the Materials Project. Nat. Mater. 24, 1522–1532 (2025). https://doi.org/10.1038/s41563-025-02272-0

BibTeX
@article{Horton2025,
  author  = {Horton, Matthew K. and Huck, Patrick and Yang, Ruo Xi and Munro, Jason M. and Dwaraknath, Shyam and Ganose, Alex M. and Kingsbury, Ryan S. and Wen, Mingjian and Shen, Jimmy X. and Mathis, Tyler S. and Kaplan, Aaron D. and Berket, Karlo and Riebesell, Janosh and George, Janine and Rosen, Andrew S. and Spotte-Smith, Evan W. C. and McDermott, Matthew J. and Cohen, Orion A. and Dunn, Alex and Kuner, Matthew C. and Rignanese, Gian-Marco and Petretto, Guido and Waroquiers, David and Griffin, Sinead M. and Neaton, Jeffrey B. and Chrzan, Daryl C. and Asta, Mark and Hautier, Geoffroy and Cholia, Shreyas and Ceder, Gerbrand and Ong, Shyue Ping and Jain, Anubhav and Persson, Kristin A.},
  title   = {Accelerated data-driven materials science with the Materials Project},
  journal = {Nature Materials},
  year    = {2025},
  volume  = {24},
  number  = {10},
  pages   = {1522--1532},
  month   = {oct},
  doi     = {10.1038/s41563-025-02272-0},
  issn    = {1476-4660},
  url     = {https://doi.org/10.1038/s41563-025-02272-0},
  abstract = {The Materials Project was launched formally in 2011 to drive materials discovery forwards through high-throughput computation and open data. More than a decade later, the Materials Project has become an indispensable tool used by more than 600,000 materials researchers around the world. This Perspective describes how the Materials Project, as a data platform and a software ecosystem, has helped to shape research in data-driven materials science. We cover how sustainable software and computational methods have accelerated materials design while becoming more open source and collaborative in nature. Next, we present cases where the Materials Project was used to understand and discover functional materials. We then describe our efforts to meet the needs of an expanding user base, through technical infrastructure updates ranging from data architecture and cloud resources to interactive web applications. Finally, we discuss opportunities to better aid the research community, with the vision that more accessible and easy-to-understand materials data will result in democratized materials knowledge and an increasingly collaborative community.}
}

3D Crystal Structure Rendering

Loading 3D structure…

Style: Ball & Stick
Raw CIF Data
# generated using pymatgen
data_HgI
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.07044117
_cell_length_b   5.07044047
_cell_length_c   6.88874723
_cell_angle_alpha   111.55174889
_cell_angle_beta   111.55175722
_cell_angle_gamma   90.02089924
_symmetry_Int_Tables_number   1
_chemical_formula_structural   HgI
_chemical_formula_sum   'Hg2 I2'
_cell_volume   151.32114782
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Hg  Hg0  1  0.88843798  0.88843798  0.77664109  1.0
  Hg  Hg1  1  0.11156202  0.11156202  0.22335891  1.0
  I  I2  1  0.65477992  0.65477992  0.30860253  1.0
  I  I3  1  0.34522008  0.34522008  0.69139747  1.0
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