CuCl2
Copper(II) chloride · cupric chloride
Copper(II) chloride is a stable, metallic copper-based halide widely used as a catalyst and chemical reagent in industrial and laboratory settings.

About Copper(II) chloride
Copper(II) chloride is a well-characterized inorganic compound that exists as a thermodynamically stable phase on the convex hull. Its metallic electronic character distinguishes it within its chemical family, facilitating its role in various redox-active processes and coordination chemistry applications. The compound is highly data-rich, with numerous structural configurations documented across scientific databases, reflecting its extensive history in laboratory and industrial research. Its ability to participate in electron transfer makes it a cornerstone reagent for organic synthesis and surface treatment technologies. Beyond its chemical reactivity, it serves as a critical precursor for the synthesis of other copper-based materials and pigments. Its stability ensures reliable performance in controlled environments, making it a staple in chemical manufacturing and academic study.
Key Properties
Cross-validated computational properties for Copper(II) chloride, aggregated across 3 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.
Synthesis Routes
Literature-extracted synthesis procedures targeting CuCl2.
Applications
Where Copper(II) chloride is used.
Frequently Asked Questions
Common questions about Copper(II) chloride, answered from cross-validated data.
What is CuCl2?
Copper(II) chloride is a stable, metallic copper-based halide widely used as a catalyst and chemical reagent in industrial and laboratory settings.
What is CuCl2 used for?
What is the band gap of CuCl2?
Is CuCl2 a metal, semiconductor, or insulator?
Is CuCl2 thermodynamically stable?
How many polymorphs of CuCl2 are known?
How is CuCl2 synthesized?
What elements does CuCl2 contain?
Where does the data for CuCl2 come from?
How It Compares
As a thermodynamically stable and structurally diverse compound, copper(II) chloride serves as a fundamental reference point for copper-halide chemistry, offering a robust baseline for understanding the electronic and structural behavior of transition metal halides.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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