pentaborane(11)
Sign in to savePentaborane(11) is an inorganic compound with the chemical formula B5H11. It is an obscure boron hydride cluster, especially relative to the heavily studied pentaborane(9) (B5H9). With two more hydrogen atoms than nido-pentaborane(9), pentaborane(11) is classified as an arachno- cluster.
Wikidata facts
- Mass
- 66.132607
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- chemical formula
- B₅H₁₁
- canonical SMILES
- [BH3]1[BH2]2[BH]13[BH2]2[BH3]3
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- Synthesis
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Pentaborane(11) is an inorganic compound with the chemical formula B5H11. It is an obscure boron hydride cluster, especially relative to the heavily studied pentaborane(9) (B5H9). With two more hydrogen atoms than nido-pentaborane(9), pentaborane(11) is classified as an arachno- cluster.
== Synthesis == Like many boron hydride clusters, pentaborane(11) was originally obtained from the pyrolysis of diborane. A more systematic synthesis entails treatment of [B4H9]− with boron tribromide. The Lewis acid abstracts hydride to give unstable B4H8, the precursor to B5H11: [B4H9]− + BBr3 → B4H8 + HBBr3− 2 B4H8 → B5H11 + "B3H5"