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Structural formula
Ball-and-stick model
CAS number 99393-62-1 YesY
PubChem 11732527
ChemSpider 9907240 YesY
Jmol-3D images Image 1
Molecular formula C8HN7O14
Molar mass 419.13204
Main hazards Explosive
Related compounds
Related compounds Cubane
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Heptanitrocubane is a new experimental high explosive based on the cubic eight-carbon cubane molecule and closely related to octanitrocubane. Seven of the eight hydrogen atoms at the corners of the cubane molecule are replaced by nitro groups, giving the final molecular formula C8H(NO2)7.

As with octanitrocubane, not enough heptanitrocubane has been synthesized to perform detailed tests on its stability and energy. It is hypothesized to have slightly better performance than explosives such as HMX, the current high-energy standard explosive, based on chemical energy analysis. While in theory not as energetic as octanitrocubane's theoretical maximum density, the HNC that has been synthesized so far is a more effective explosive than any ONC that has been produced, due to more efficient crystal packing and hence higher density.[1]

Heptanitrocubane was first synthesized by the same team who synthesized octanitrocubane, Philip Eaton and Mao-Xi Zhang at the University of Chicago, in 1999.[2]


  1. ^ Gejji, Shridhar P; Patil, Ujwala N; Dhumal, Nilesh R (2004). "Molecular electrostatic potentials and electron densities in nitrocubanes C8H8−α(NO2)α (α=1–8): Ab initio and density functional study". Journal of Molecular Structure: THEOCHEM 681: 117. doi:10.1016/j.theochem.2004.05.012. 
  2. ^ Mao-Xi Zhang, Philip E. Eaton, Richard Gilardi (2000). "Hepta- and Octanitrocubanes". Angewandte Chemie International Edition 39 (2): 401–404. doi:10.1002/(SICI)1521-3773(20000117)39:2<401::AID-ANIE401>3.0.CO;2-P. PMID 10649425. 

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