Hexaborane, also called hexaborane(10) to distinguish it from hexaborane(12) (B6H12), is an inorganic compound with the formula B6H10. It is a colorless liquid that is unstable in air.[1]
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B6H10 | |
Molar mass | 74.94 g·mol−1 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Hexaborane(10) is classified as a nido-cluster.[2]: 152 The boron atoms define a pentagonal pyramid, with four bridging hydrogen atoms and six terminal ones. The point group of the molecule is Cs.[3]
A laboratory route begins with bromination of pentaborane(11) followed by deprotonation of the bromide to give [BrB5H7]−. This anionic cluster is reduced with diborane to give the neutral product:[1]
It can also be generated by pyrolysis of pentaborane(11).
B6H10 can be deprotonated to give [B6H9]− or protonated to give [B6H11]+.[1] It can act as a Lewis base towards reactive borane radicals, forming various conjuncto-clusters.[2]: 162