Hexaborane(12)

Hexaborane(12)
Identifiers
CAS Number
3D model (JSmol)
InChI
  • InChI=1S/B6H12/c7-1-3-4(5(1,3,7)10-4)2-6(3,4,8-2)9-3/h3-6H,1-2H2
    Key: ZMLJCODVOXNMHE-UHFFFAOYSA-N
SMILES
  • [BH2]12[BH]34([H]1)[BH]256[BH]38([H]4)[BH]75([H]6)[BH2]8[H]7
Properties
Chemical formula
 B6H12
Molar mass 76.96 g·mol−1
Appearance colorless liquid
Melting point −82.3 °C (−116.1 °F; 190.8 K)
Boiling point 85 °C (185 °F; 358 K) (approx)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Hexaborane(12) is an inorganic compound with the formula B6H12. It is an obscure member of the boranes. It is a colorless liquid that, like some other boron hydride clusters, is readily hydrolyzed and flammable.

The molecular structure conforms to C2 symmetry group. With the formula BnHn+6, it is classified as an arachno-cluster. As such the boron positions match six of the boron positions in the closo-B8H2−
8.

Preparation

It is typically prepared by the cluster expansion method from B5H−
8, the conjugate base of pentaborane(9):[2]

LiB5H8 + 1/2 B2H6 → LiB6H11
LiB6H11 + HCl → B6H12 + LiCl

References

  1. ^ "Hexaborane(12)". webbook.nist.gov. National Institute of Standards and Technology.
  2. ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. doi:10.1016/C2009-0-30414-6. ISBN 978-0-08-037941-8. p.172.
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