CuH11C4(NO5)2

High-Entropy Materials HEA

MP-ID: mp-698276 · Space group: P-1 (#2)

Materials Project API

Basic Information

Formula

CuH11C4(NO5)2

MP-ID

mp-698276

Elements

Sites

Density

1.9057

g/cm³

Volume

541.44

Å³

Cell a

6.9794

Cell b

8.9964

Cell c

9.2862

α Angle

108.11

β Angle

98.63

γ Angle

95.59

Space Group

P-1

Point Group

-1

Crystal System

Triclinic

Bravais Lattice

Triclinic P

Stability

Packing Fraction

0.5240

X-ray Diffraction

Diffraction Pattern

Target / Radiation

X-axis: 2θ (°); Y-axis: relative intensity; CuKa ; λ=1.5406 Å

Diffraction Peaks (Top 24)

2θ	d (Å)	I	hkl
10.47	8.4496	100.0	(0,1,0)
12.98	6.8188	4.8	(1,0,0)
14.92	5.9364	72.1	(1,0,-1)
15.40	5.7552	9.9	(1,-1,0)
16.91	5.2440	14.5	(0,1,1)
17.44	5.0854	28.6	(1,1,-1)
17.92	4.9486	6.2	(1,1,0)
17.95	4.9430	24.9	(1,-1,1)
18.02	4.9219	6.1	(1,0,1)
19.05	4.6576	13.4	(1,-1,-1)
19.70	4.5076	22.0	(0,1,-2)
20.11	4.4162	2.7	(0,2,-1)
20.50	4.3321	17.4	(0,0,2)
21.03	4.2248	8.2	(0,2,0)
23.30	3.8184	3.6	(1,-2,1)
23.48	3.7893	4.9	(1,1,1)
24.07	3.6970	6.0	(0,2,-2)
24.70	3.6044	4.7	(1,2,-1)
24.92	3.5736	4.1	(1,-1,2)
26.03	3.4227	2.7	(0,1,2)
26.14	3.4094	3.9	(2,0,0)
26.54	3.3587	1.2	(1,-1,-2)
26.65	3.3447	9.8	(2,-1,0)
27.02	3.3000	3.0	(1,-2,-1)

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Energy Properties

Formation Energy/atom

-1.03522

eV/atom

Energy/atom

-6.19687

eV/atom

Energy above Hull

0.1650

eV/atom

Uncorrected Energy

-5.9515

eV/atom

Volume/atom

9.67

Å³

c/a Ratio

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

2.4316

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.004490

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

H · 0.393

Element Family

Alkali-AlkEarth

Solute Fraction

0.607

Interstitial Fraction

0.214

High-Entropy Alloy Features

Composite Radar (normalized)

Element-Class Share

Mix Entropy ΔS/R

1.3203

HEA criterion (>1.0 = high entropy)

Mix Entropy ΔS

10.9767

J/mol·K

Ω Parameter

9.4964

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

48.581%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.5713

smaller = more stable mixing

VEC

3.143

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

-0.722

kJ/mol; negative = exothermic mixing

Entropy Norm

0.8203

SS Former

Phase Tendency

Related Tasks

Related computation task IDs (1)

aaaefhmw

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-698276

Reference Citation

The crystal structure and related material properties of CuH11C4(NO5)2 were obtained from the Materials Project database (MP-ID: mp-698276, 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…

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Raw CIF Data

# generated using pymatgen
data_CuH11C4(NO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.97937800
_cell_length_b   8.99644161
_cell_length_c   9.28616040
_cell_angle_alpha   108.11147628
_cell_angle_beta   98.62620227
_cell_angle_gamma   95.59276338
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CuH11C4(NO5)2
_chemical_formula_sum   'Cu2 H22 C8 N4 O20'
_cell_volume   541.43672936
_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
  Cu  Cu0  1  0.00000000  0.00000000  0.00000000  1.0
  Cu  Cu1  1  0.50000000  0.00000000  0.50000000  1.0
  H  H2  1  0.36519400  0.60153100  0.67838400  1.0
  H  H3  1  0.63480600  0.39846900  0.32161600  1.0
  H  H4  1  0.17476000  0.26476900  0.28984200  1.0
  H  H5  1  0.82524000  0.73523100  0.71015800  1.0
  H  H6  1  0.97359800  0.32868800  0.36515600  1.0
  H  H7  1  0.02640200  0.67131200  0.63484400  1.0
  H  H8  1  0.17807300  0.29267900  0.47579200  1.0
  H  H9  1  0.82192700  0.70732100  0.52420800  1.0
  H  H10  1  0.19438400  0.45096300  0.41772900  1.0
  H  H11  1  0.80561600  0.54903700  0.58227100  1.0
  H  H12  1  0.28409100  0.50869700  0.99167000  1.0
  H  H13  1  0.71590900  0.49130300  0.00833000  1.0
  H  H14  1  0.34613000  0.32386300  0.93161300  1.0
  H  H15  1  0.65387000  0.67613700  0.06838700  1.0
  H  H16  1  0.11824500  0.35882200  0.86057900  1.0
  H  H17  1  0.88175500  0.64117800  0.13942100  1.0
  H  H18  1  0.17743200  0.35944600  0.04448100  1.0
  H  H19  1  0.82256800  0.64055400  0.95551900  1.0
  H  H20  1  0.00609200  0.94407800  0.31578700  1.0
  H  H21  1  0.99390800  0.05592200  0.68421300  1.0
  H  H22  1  0.79149700  0.97601700  0.25618900  1.0
  H  H23  1  0.20850300  0.02398300  0.74381100  1.0
  C  C24  1  0.62870600  0.00065900  0.86548500  1.0
  C  C25  1  0.37129400  0.99934100  0.13451500  1.0
  C  C26  1  0.71552900  0.17630000  0.96056300  1.0
  C  C27  1  0.28447100  0.82370000  0.03943700  1.0
  C  C28  1  0.55956100  0.31950400  0.64055400  1.0
  C  C29  1  0.44043900  0.68049600  0.35944600  1.0
  C  C30  1  0.76487500  0.26763600  0.64886600  1.0
  C  C31  1  0.23512500  0.73236400  0.35113400  1.0
  N  N32  1  0.12936500  0.33402400  0.38675300  1.0
  N  N33  1  0.87063500  0.66597600  0.61324700  1.0
  N  N34  1  0.23139600  0.38709700  0.95696700  1.0
  N  N35  1  0.76860400  0.61290300  0.04303300  1.0
  O  O36  1  0.74235200  0.89845800  0.88081100  1.0
  O  O37  1  0.25764800  0.10154200  0.11918900  1.0
  O  O38  1  0.89527800  0.19809000  0.03009300  1.0
  O  O39  1  0.10472200  0.80191000  0.96990700  1.0
  O  O40  1  0.46593900  0.96702500  0.77904800  1.0
  O  O41  1  0.53406100  0.03297500  0.22095200  1.0
  O  O42  1  0.61581400  0.28361900  0.95934200  1.0
  O  O43  1  0.38418600  0.71638100  0.04065800  1.0
  O  O44  1  0.41433200  0.20452200  0.57113500  1.0
  O  O45  1  0.58566800  0.79547800  0.42886500  1.0
  O  O46  1  0.76309900  0.11618000  0.58969800  1.0
  O  O47  1  0.23690100  0.88382000  0.41030200  1.0
  O  O48  1  0.54215200  0.45906500  0.70353700  1.0
  O  O49  1  0.45784800  0.54093500  0.29646300  1.0
  O  O50  1  0.91470500  0.36593900  0.71649500  1.0
  O  O51  1  0.08529500  0.63406100  0.28350500  1.0
  O  O52  1  0.92793400  0.98321200  0.24224500  1.0
  O  O53  1  0.07206600  0.01678800  0.75775500  1.0
  O  O54  1  0.26513100  0.64855100  0.62661700  1.0
  O  O55  1  0.73486900  0.35144900  0.37338300  1.0

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