PI3

Phosphorus triiodide · Phosphorus(III) iodide

Phosphorus triiodide is a stable semiconducting compound frequently employed as a chemical reagent in organic synthesis.

IP
Crystal structure of PI3
Ground-state structure · Materials Project
Overview

About Phosphorus triiodide

Phosphorus triiodide is a thermodynamically stable compound that serves as a vital phosphorus-based reagent. Its semiconducting electronic character and structural versatility make it a significant subject of study, with numerous reported structural configurations documented in material databases.

This compound is primarily utilized for its ability to facilitate specific chemical transformations, particularly in halogenation reactions. Its stability and reactivity profile allow it to function effectively in laboratory and industrial settings where precise molecular modifications are required.

At a glance

Key Properties

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

Band Gap

2.27 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
2 DFT sources

Structures

24
3 databases, 8 space groups
Uses

Applications

Where Phosphorus triiodide is used.

Organic synthesisHalogenation reagentChemical manufacturing
Reference

Frequently Asked Questions

Common questions about Phosphorus triiodide, answered from cross-validated data.

What is PI3?

Phosphorus triiodide is a stable semiconducting compound frequently employed as a chemical reagent in organic synthesis.

More questions
What is PI3 used for?
Phosphorus triiodide (PI3) is used in organic synthesis, halogenation reagent, and chemical manufacturing.
What is the band gap of PI3?
Phosphorus triiodide (PI3) has a DFT-computed band gap of 2.27 eV across 24 reported structures.
Is PI3 a metal, semiconductor, or insulator?
With a band gap up to 2.27 eV it is a semiconductor.
Is PI3 thermodynamically stable?
Yes — Phosphorus triiodide (PI3) sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of PI3 are known?
24 structures of PI3 are reported across 3 databases, spanning 8 distinct space groups.
What elements does PI3 contain?
Phosphorus triiodide (PI3) contains I and P (2 elements).
Where does the data for PI3 come from?
PI3 data is cross-referenced from latticegraph.
Comparison

How It Compares

As a standalone phosphorus halide, phosphorus triiodide represents a key member of the phosphorus-iodine system, providing a distinct chemical reactivity profile compared to other phosphorus halides that are often used in similar synthetic pathways.

Data sources & attribution
  • latticegraph — Lattice Graph Materials Intelligence Platform

Analyze PI3 in the Lattice Graph platform

Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.

Explore the Platform →