TiCl3

Titanium trichloride · Titanium(III) chloride

Titanium trichloride is a stable semiconducting compound frequently utilized as a catalyst in the industrial production of polymers.

ClTi
Crystal structure of TiCl3 (trigonal, R-3 (No. 148))
Ground-state structure · Materials Project
Overview

About Titanium trichloride

Titanium trichloride is a thermodynamically stable inorganic compound that exhibits characteristic semiconducting electronic properties. Its structural versatility is highlighted by the extensive number of reported crystalline arrangements documented across materials databases.

This compound is primarily valued for its utility in chemical synthesis and industrial manufacturing. Its ability to facilitate specific chemical reactions makes it a cornerstone material in the production of high-performance polymers and other specialized chemical products.

At a glance

Key Properties

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

Band Gap

0.18 eV
Range across DFT structures · ground state: small gap

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

Stable
3 DFT sources

Structures

111
3 databases, 21 space groups
Validation

Cross-Source DFT Agreement

How well independent DFT databases agree on the thermodynamics of TiCl3. Tight agreement means computed properties can be trusted without re-running calculations.

Agreement Score

1.00 / 1.00
Trust tier: high

Hull Spread

0.000 eV
EAH spread across sources

Sources Compared

3
jarvis, materials_project, oqmd

Space Group Consensus

Mixed (most: R-3 (No. 148))
Crystallography

Reported Structures

Lowest-energy structures reported for TiCl3, ranked by energy above hull.

Space GroupCrystal SystemBand Gap (eV)E above hull (eV/atom)E/atom (eV)Density (g/cm³)
Cc (No. 9)monoclinic0.350.0000-5.4482.62
——0.000.0000-1.870—
P63/mcm (No. 193)hexagonal0.000.0000-1.667—
P3112 (No. 151)trigonal0.000.0001-5.4482.62
C2/c (No. 15)monoclinic0.020.0003-5.4472.62
C2/m (No. 12)monoclinic0.100.0024-5.4452.64
R-3 (No. 148)trigonal0.000.0043-1.663—
P-31c (No. 163)trigonal0.000.0044-1.663—
C2/m (No. 12)monoclinic0.000.0050-1.662—
P-31m (No. 162)trigonal0.000.0054-1.662—
P3112 (No. 151)trigonal0.000.0056-1.662—
C2/c (No. 15)monoclinic0.180.0153-1.652—
Synthesis

Synthesis Routes

Literature-extracted synthesis procedures targeting TiCl3.

Solid State
Procedure available · ceder_solid_state
Uses

Applications

Where Titanium trichloride is used.

Ziegler-Natta polymerization catalystChemical synthesis reagentOrganic reaction catalyst
Reference

Frequently Asked Questions

Common questions about Titanium trichloride, answered from cross-validated data.

What is TiCl3?

Titanium trichloride is a stable semiconducting compound frequently utilized as a catalyst in the industrial production of polymers.

More questions
What is TiCl3 used for?
Titanium trichloride (TiCl3) is used in ziegler-Natta polymerization catalyst, chemical synthesis reagent, and organic reaction catalyst.
What is the band gap of TiCl3?
Titanium trichloride (TiCl3) has a DFT-computed band gap of 0.18 eV across 111 reported structures. Standard DFT underestimates band gaps, so the measured gap is typically larger.
Is TiCl3 a metal, semiconductor, or insulator?
DFT predicts a band gap of up to 0.18 eV (a semiconductor). Measured gaps are typically larger.
Is TiCl3 thermodynamically stable?
Yes — Titanium trichloride (TiCl3) sits on the convex hull (energy above hull 0 eV/atom), i.e. stable.
What is the crystal structure of TiCl3?
The reference structure of Titanium trichloride (TiCl3) is trigonal symmetry, space group R-3 (No. 148).
How many polymorphs of TiCl3 are known?
111 structures of TiCl3 are reported across 3 databases, spanning 21 distinct space groups.
How is TiCl3 synthesized?
Literature-reported routes for TiCl3 include solid state.
What elements does TiCl3 contain?
Titanium trichloride (TiCl3) contains Cl and Ti (2 elements).
Where does the data for TiCl3 come from?
TiCl3 data is cross-referenced from materials_project, oqmd, jarvis.
Comparison

How It Compares

As a primary titanium-based halide, titanium trichloride serves as a fundamental benchmark for transition metal chemistry. It defines the standard for catalytic activity in its class, providing a robust and well-understood framework for researchers exploring the reactivity and structural behavior of trivalent titanium compounds.

Data sources & attribution
  • materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
  • 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)

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