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307629

Sigma-Aldrich

Boron triiodide

95%

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Synonym(s):
Boron iodide (BI3), Triiodoborane
Empirical Formula (Hill Notation):
BI3
CAS Number:
Molecular Weight:
391.52
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

Assay

95%

form

solid

density

3.35 g/mL at 25 °C (lit.)

storage temp.

2-8°C

SMILES string

IB(I)I

InChI

1S/BI3/c2-1(3)4

InChI key

YMEKEHSRPZAOGO-UHFFFAOYSA-N

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This Item
230367419508178934
Boron triiodide 95%

Sigma-Aldrich

307629

Boron triiodide

Boron tribromide ≥99.99%

Sigma-Aldrich

230367

Boron tribromide

Boron tribromide ReagentPlus®, ≥99%

Sigma-Aldrich

419508

Boron tribromide

form

solid

form

liquid

form

-

form

liquid

density

3.35 g/mL at 25 °C (lit.)

density

2.60 g/mL at 20 °C (lit.)

density

2.60 g/mL at 20 °C (lit.)

density

1.326 g/mL at 25 °C

storage temp.

2-8°C

storage temp.

-

storage temp.

-

storage temp.

2-8°C

General description

Boron triiodide is a strong Lewis acid. It can be prepared by treating iodine (I2) with potassium borohydride (KBH4) in heptane.

Application

Boron triiodide can be used as a reagent to cleave C-O bonds in ethers, esters, and alcohols. It can also be used to cleave silanes and halides. Boron triiodide converts alcohols to alkyl iodides; sulfonyl and sulfinyl to disulfides. Borylation of triarylamines can be achievd using this reagent.
It can also be used to prepare imidazole based imino aluminum dihalide metal complexes and boron carbonitride (BCN) nanowires.

Pictograms

Corrosion

Signal Word

Danger

Hazard Statements

Hazard Classifications

Skin Corr. 1B

Storage Class Code

8A - Combustible, corrosive hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Boron triiodide
Ronald R and Karatholuvhu MS
Encyclopedia of Reagents for Organic Synthesis, Second Edition (2009)
Synthesis and growth mechanism of BCN nanowires
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Materials Letters, 65(15-16), 2476-2478 (2011)
Multiple Electrophilic C-H Borylation of Arenes Using Boron Triiodide
Oda S, et al.
Organic Letters, 22(2), 700-704 (2020)
Boron Triiodide
Ronald R and Karatholuvhu MS
Encyclopedia of Reagents for Organic Synthesis, Second Edition (2001)
Synthesis, characterization and reactivity of an imidazolin-2-iminato aluminium dihydride
Franz D, et al.
Dalton Transactions, 43(11), 4451-4461 (2014)

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