NClO

NClO is a stable, semiconducting inorganic compound that serves as a subject of interest in structural materials research.

ClNO
Crystal structure of NClO (orthorhombic, Pnma (No. 62))
Ground-state structure · Materials Project
Overview

About NClO

NClO is a unique inorganic compound characterized by its semiconducting electronic nature. As a thermodynamically stable phase residing on the convex hull, it represents a robust configuration of nitrogen, chlorine, and oxygen atoms that holds significant interest for fundamental materials science research.

With numerous reported structural variations across multiple databases, this compound serves as a focal point for understanding complex bonding environments. Its stability makes it a compelling candidate for exploring specialized chemical pathways and potential functional applications in electronic materials.

At a glance

Key Properties

Cross-validated computational properties for NClO, aggregated across 3 databases.

Band Gap

1.29–1.90 eV
Range across DFT structures · ground state: narrow gap

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

Stable
3 DFT sources

Structures

20
3 databases, 7 space groups
Validation

Cross-Source DFT Agreement

How well independent DFT databases agree on the thermodynamics of NClO. Tight agreement means computed properties can be trusted without re-running calculations.

Agreement Score

0.42 / 1.00
Trust tier: low

Hull Spread

0.145 eV
EAH spread across sources

Sources Compared

3
jarvis, materials_project, oqmd

Space Group Consensus

All match
Crystallography

Reported Structures

Lowest-energy structures reported for NClO, ranked by energy above hull.

Space GroupCrystal SystemBand Gap (eV)E above hull (eV/atom)E/atom (eV)Density (g/cm³)
——1.900.0000-0.271—
——0.000.0474-0.223—
Pnma (No. 62)orthorhombic1.760.11140.017—
P21/c (No. 14)monoclinic1.550.11910.025—
Pnma (No. 62)orthorhombic1.980.1447-5.2431.90
P21/c (No. 14)monoclinic2.070.1595-6.9941.81
P21/c (No. 14)monoclinic1.700.1638-5.2241.74
P21/c (No. 14)monoclinic1.750.1684-5.2191.83
Pm (No. 6)monoclinic1.290.19460.100—
P21/c (No. 14)monoclinic———1.81
Pnma (No. 62)orthorhombic———1.63
P-1 (No. 2)triclinic———3.46
Reference

Frequently Asked Questions

Common questions about NClO, answered from cross-validated data.

What is NClO?

NClO is a stable, semiconducting inorganic compound that serves as a subject of interest in structural materials research.

More questions
What is the band gap of NClO?
NClO has a DFT-computed band gap of 1.29–1.90 eV across 20 reported structures. Standard DFT underestimates band gaps, so the measured gap is typically larger.
Is NClO a metal, semiconductor, or insulator?
DFT predicts a band gap of up to 1.90 eV (a semiconductor). Measured gaps are typically larger.
Is NClO thermodynamically stable?
Yes — NClO sits on the convex hull (energy above hull 0 eV/atom), i.e. stable.
What is the crystal structure of NClO?
The reference structure of NClO is orthorhombic symmetry, space group Pnma (No. 62).
How many polymorphs of NClO are known?
20 structures of NClO are reported across 3 databases, spanning 7 distinct space groups.
What elements does NClO contain?
NClO contains Cl, N, and O (3 elements).
Where does the data for NClO come from?
NClO data is cross-referenced from oqmd, jarvis, materials_project, mpaloe.
Comparison

How It Compares

As a standalone entry in this context, NClO represents a distinct structural archetype. Its position on the convex hull distinguishes it as a particularly stable configuration, serving as a benchmark for future investigations into the chemical space of nitrogen-chlorine-oxygen systems.

Data sources & attribution
  • oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
  • jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
  • materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
  • mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.

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