Diborane

B₂H₆

IUPAC: Diborane(6)

CAS: 19287-45-7

Overview

Diborane is a colorless, pyrophoric gas with three-center two-electron bonds that challenged classical bonding theory. Its unusual 'banana bond' structure was instrumental in developing the modern understanding of electron-deficient molecules.

Composition

Element Symbol Atoms Atomic Mass
Hydrogen H 6 1.0080
Boron B 2 10.8100

Elemental Composition

H
Hydrogen ×6
21.9%
B
Boron ×2
78.1%

Uses

  • • Boron doping in semiconductors
  • • Rocket fuel additive
  • • Hydroboration reactions in organic chemistry
  • • Chemical vapor deposition

Fun Facts

  • ✦ Its bonding structure was so unusual that it helped revolutionize chemical bonding theory

Safety

  • ⚠ Highly toxic
  • ⚠ Pyrophoric (ignites in air)
  • ⚠ Explosive mixtures with air

Structure

SMILES

B.B

Properties

Type
inorganic
State
gas
Molar Mass
27.67 g/mol
Density
1.1310 g/cm³
Melting Point
-164.9 °C
Boiling Point
-92.5 °C
Solubility
decomposes

Molecular Descriptors

Exact Mass
28.0656
TPSA
0.0 Ų
H-Bond Donors
0
H-Bond Acceptors
0
Rotatable Bonds
0
Heavy Atoms
2
Complexity
0.0

Also Known As

Diborane

Related Compounds

Aluminum Chloride

AlCl₃

Aluminum Nitride

AlN

Ammonium Persulfate

(NH₄)₂S₂O₈

Arsine

AsH₃

Barium Ferrite

BaFe₁₂O₁₉

Barium Titanate

BaTiO₃

Boron Nitride

BN

Boron Trichloride

BCl₃

Calcium Aluminate Cement

CaO·Al₂O₃

Calcium Carbide

CaC₂

Frequently Asked Questions

What is Diborane?
Diborane (B₂H₆) is a inorganic compound with the IUPAC name Diborane(6).
What is the molecular weight of Diborane?
Diborane has a molar mass of 27.67 g/mol.
What state is Diborane at room temperature?
Diborane is a gas at room temperature.
Is Diborane organic or inorganic?
Diborane is classified as an inorganic compound.
What elements make up Diborane?
Diborane (B₂H₆) is composed of Hydrogen (H), Boron (B).