BASF
Hazard to Others
Posts: 282
Registered: 5-11-2002
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Borazine - "the perfect candidate" ?
Borazine is known as the "inorganic" benzene although it is not aromatic.
The hydrogens at the boronns are more easily substituted than the carbons on the benzene-ring.
Although the density is much lower for a boron-compound, the high heat of formation of N2 and B2O3 still has to be considered, in my opinion.
My suggestion in terms of achieving a higher density would be to get a pentafluorosulfonyl-group on the borons(reactive with nucleophiles) and get a
fuel-group(methyl- / thio- or amino- (hydrogen-bonding  etc..) on the
aza-position(s).
  
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chemoleo
Biochemicus Energeticus
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Registered: 23-7-2003
Location: England Germany
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Slightly related to your quest is this:
http://www.sciencemadness.org/talk/viewthread.php?tid=1244
Never Stop to Begin, and Never Begin to Stop...
Tolerance is good. But not with the intolerant! (Wilhelm Busch)
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