pentaborane(9)
Sign in to saveAlso known as pentaboron nonahydride, nonahydropentaborane, (2,3-muH),(2,5-muH),(3,4-muH),(4,5-muH)-nido-pentaborane(9), pentaborane
Pentaborane(9) is an inorganic compound with the formula . It is one of the most common boron hydride clusters, although it is a highly reactive compound. Because of its high reactivity with oxygen, it was once evaluated as rocket or jet fuel. Like many of the smaller boron hydrides, pentaborane is colourless, diamagnetic, and volatile. It is related to pentaborane(11) ().
Wikidata facts
- Mass
- 64.116959
Show 15 more facts
- electric dipole moment
- 2.13
- chemical formula
- B₅H₉
- canonical SMILES
- [BH]123[BH]456[BH]17([BH]28([BH]34([H]5)[H]8)[H]7)[H]6
- NIOSH Pocket Guide ID
- 0481
- density
- 0.62
- immediately dangerous to life or health
- 2.58
- melting point
- -46.6
- boiling point
- 60
- vapor pressure
- 171
- flash point
- 86
- lower flammable limit
- 0.42
- ionization energy
- 9.9
- time-weighted average exposure limit
- 0.01
- short-term exposure limit
- 0.03
- Commons category
- Pentaborane(9)
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~5 min read
Article
6 sectionsContents
- Structure, synthesis, properties
- Reactions
- History of its use as a fuel
- Safety
- See also
- References
Pentaborane(9) is an inorganic compound with the formula . It is one of the most common boron hydride clusters, although it is a highly reactive compound. Because of its high reactivity with oxygen, it was once evaluated as rocket or jet fuel. Like many of the smaller boron hydrides, pentaborane is colourless, diamagnetic, and volatile. It is related to pentaborane(11) ().
==Structure, synthesis, properties== Its structure is that of five atoms of boron arranged in a square pyramid. Each boron has a terminal hydride ligand and four hydrides span the edges of the base of the pyramid. It is classified as a nido cage.