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Sigma-Aldrich

Borane-ammonia complex

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technical grade, 90%

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Synonym(s):
Amminetrihydroboron, Borazane
Linear Formula:
H3N · BH3
CAS Number:
Molecular Weight:
30.87
MDL number:
PubChem Substance ID:
NACRES:
NA.22

grade

technical grade

Quality Level

Assay

90%

form

solid

reaction suitability

reagent type: reductant

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SMILES string

B.N

InChI

1S/BH3.H3N/h2*1H3

InChI key

WZMUUWMLOCZETI-UHFFFAOYSA-N

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General description

Ammonia borane, also known as borazane has high hydrogen content (about 20% mass). Thermal decomposition of borazane takes place in the temperature range of 350-410K accompanied by hydrogen release and heat evolution. It may find use as a hydrogen source in fuel cells in the future.
Borane-ammonia complex is a novel material, where ammonia is tightly bound to a ligand through all four of its atoms. It is a donor-acceptor complex that is formed by electron donation from a Lewis base (NH3) to a Lewis acid (BH3). It shows a B-N bond distance of 1.564 Å.
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Application

Borazane acts as a mild, efficient, and stereoselective reducing agent for aldehydes and ketones in protic or nonprotic media.It can be used as a storage medium for release of hydrogenBorazane is popularly used as an ammonia borane (AB) source for the formation of hexagonal boron nitride monolayers which are used as a substrate for graphene growth.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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William C Ewing et al.
Journal of the American Chemical Society, 133(42), 17093-17099 (2011-10-04)
Studies of the activating effect of Verkade's base, 2,8,9-triisobutyl-2,5,8,9-tetraaza-1-phosphabicyclo[3.3.3]undecane (VB), on the rate and extent of H(2) release from ammonia borane (AB) have led to the syntheses and structural characterizations of three anionic aminoborane chain-growth products that provide direct support
X. Yang, et al.,
Tetrahedron, 67, 7121-7127 (2011)
Tetrahedron Letters, 693-693 (1980)
Weng, B.; et al.
International Journal of Hydrogen Energy, 36, 10870-10870 (2011)
Ab initio/GIAO-CCSD (T) study of the effects of protonation on borane-ammonia (H3BNH3) and related complexes
Rasul G, et al.
Journal of Molecular Structure: THEOCHEM, 818(1-3), 65-70 (2007)

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