CrCl2
Chromium(II) chloride · Chromous chloride
Chromium(II) chloride is a metastable, semiconducting metal halide frequently utilized as a specialized reducing agent in chemical synthesis.

About Chromium(II) chloride
Chromium(II) chloride is a metal halide that functions as a semiconducting material. Its chemical behavior is defined by the oxidation state of the chromium center, which influences its reactivity and structural coordination in various environments. As a metastable compound, it serves as a critical reagent in organic synthesis and inorganic research. Its ability to participate in specific reduction reactions makes it a valuable tool for chemists working on complex molecular transformations.
Key Properties
Cross-validated computational properties for Chromium(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.
Applications
Where Chromium(II) chloride is used.
Frequently Asked Questions
Common questions about Chromium(II) chloride, answered from cross-validated data.
What is CrCl2?
Chromium(II) chloride is a metastable, semiconducting metal halide frequently utilized as a specialized reducing agent in chemical synthesis.
What is CrCl2 used for?
What is the band gap of CrCl2?
Is CrCl2 a metal, semiconductor, or insulator?
Is CrCl2 thermodynamically stable?
How many polymorphs of CrCl2 are known?
What elements does CrCl2 contain?
Where does the data for CrCl2 come from?
How It Compares
As a member of the transition metal halide family, this compound is notable for its distinct electronic character and its utility as a powerful reducing agent, occupying a specialized niche in synthetic inorganic chemistry compared to more inert or stable halide counterparts.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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