Borane-triethylamine complex Chemical Properties

Melting point:

−4-−2 °C

Boiling point:

97 °C12 mm Hg(lit.)

Density 

0.783 g/mL at 20 °C(lit.)

refractive index 

n20/D 1.444

Flash point:

20 °F

storage temp. 

Refrigerator

form 

Liquid

color 

Colorless to pale yellow

Water Solubility 

MAY DECOMPOSE

Sensitive 

Moisture Sensitive

InChIKey

ONRDAGWFOUZNLV-UHFFFAOYSA-N

CAS DataBase Reference

1722-26-5(CAS DataBase Reference)

NIST Chemistry Reference

Triethylamineborane(1722-26-5)

EPA Substance Registry System

Boron, (N,N-diethylethanamine)trihydro-, (T-4)- (1722-26-5)

Safety Information

Hazard Codes 

F,C

Risk Statements 

11-20/21/22-34

Safety Statements 

26-36/37/39-45-33-16

RIDADR 

UN 2924 3/PG 2

WGK Germany 

3

F 

10-21

TSCA 

Yes

HazardClass 

3

PackingGroup 

II

HS Code 

29299090

MSDS

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Borane-triethylamine complex Usage And Synthesis

Chemical Properties

clear colourless liquid

Uses

Borane–trimethylamine complex (Me3N·BH3; BTM) is the most stable of the amine–borane complexes that are commercially available, and it is cost-effective. It is a valuable reagent in organic chemistry with applications in the reduction of carbonyl groups and carbon–nitrogen double bond reduction, with considerable examples in the reduction of oximes, hydrazones and azines.
As a reducing agent and in hydroboration reactionsBorane-triethylamine complex is used for ethanolysis of amine-borane adducts. It is also used in photochemical hydroboration and oxidation of single-walled carbon nanotubes. Further, it acts as a reactant for the synthesis of silylboranate and N-heterocyclic carbene borane complexes through Lewis base exchange with amine-boranes. It plays an important role in the generation of boron carbide nitride films through low-pressure chemical vapor deposition.

Purification Methods

Distil it in a vacuum using a 60cm glass helices-packed column. [Brown et al. J Am Chem Soc 64 325 1942, Ashby & Foster J Am Chem Soc 84 3407 1962, Matsuura & Tolcura Tetrahedron Lett 4703 1968, Beilstein 4 IV 329.]

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