ICl
Iodine monochloride · Wijs' solution
Iodine monochloride is a reactive interhalogen compound that appears as a reddish-brown liquid or solid. It is primarily used as a chemical reagent in organic synthesis, particularly for halogenation reactions and in analytical chemistry for determining the degree of unsaturation in fats and oils.
Key Properties
Cross-validated computational properties for Iodine monochloride, aggregated across 4 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Reported Structures
Lowest-energy structures reported for ICl, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| P21/c (No. 14) | monoclinic | 1.85 | 0.0000 | -2.151 | 3.60 |
| P21/c (No. 14) | monoclinic | 1.50 | 0.0059 | -2.145 | 3.72 |
| P21/c (No. 14) | monoclinic | 1.18 | 0.1011 | -2.050 | 2.67 |
| P21/c (No. 14) | Monoclinic | — | — | — | 2.70 |
| P21/c (No. 14) | — | — | — | — | — |
| C2/m (No. 12) | Monoclinic | — | — | — | 3.08 |
| C2 (No. 5) | Monoclinic | — | — | — | 2.76 |
| P21/c (No. 14) | Monoclinic | — | — | — | 2.67 |
| Cm (No. 8) | Monoclinic | — | — | — | 3.04 |
| R-3m (No. 166) | Trigonal | — | — | — | 3.42 |
| P-1 (No. 2) | Triclinic | — | — | — | 4.99 |
| Ama2 (No. 40) | Orthorhombic | — | — | — | 4.42 |
Applications
Where Iodine monochloride is used.
Frequently Asked Questions
Common questions about Iodine monochloride, answered from cross-validated data.
What is ICl?
Iodine monochloride is a reactive interhalogen compound that appears as a reddish-brown liquid or solid. It is primarily used as a chemical reagent in organic synthesis, particularly for halogenation reactions and in analytical chemistry for determining the degree of unsaturation in fats and oils.
What is ICl used for?
What is the band gap of ICl?
Is ICl a metal, semiconductor, or insulator?
Is ICl thermodynamically stable?
What is the crystal structure of ICl?
What is the density of ICl?
How many polymorphs of ICl are known?
What elements does ICl contain?
Where does the data for ICl come from?
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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