halogen
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Silicon Tetrachloride based nitration
The idea goes like this:
Silicon tetrachloride is mixed with Sodium Nitrite. The solution will be comprised of NaCl and Si(NO2)4. However there really cannot be Si(NO2)4, so
no reaction occurs.
But when mixed with a ketone for example the reaction happens thusly:
2(CH3)2CO + SiCl4 +4NaNO2 --> 4NaCl + SiO2 + 2 (CH3)2C(NO2)2
This product seems interesting because the dinitropropane(?) may be explosive.
Does this look OK?
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chemoleo
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Do you have a reference for this (to indicate how you came about this), or is this just a random idea?
If this reaction works, it'd be rather complicated to make - looking at this reaction equation, it seems water is really undesired, one'd
need dry ether or something.
On top of that, making SiCl4 also requires good equipment etc.
The final product will still have a bad OB.
Also, the reaction mechanism - in detail - how do you suppose it'd go? Essentially you presume the formation of a SiCl3+ ion or radical, where,
the oxygen of the acetone can attack. How likely is this to form? You'd need this ion in order to transfer the oxygen to the silicon.
Never Stop to Begin, and Never Begin to Stop...
Tolerance is good. But not with the intolerant! (Wilhelm Busch)
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halogen
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It was my idea.
(CH3)2CO + 2NaNO2 --> Na2O + (CH3)2CO
SiCl4 + Na2O --> SiOCl2 + 2NaCl
or something along those lines. I'm not sure that the acetone/NaNO2 reaction would occur. I was thinking that The fact SiCl4 Would much rather O2
than Cl4, that that would act to cause the reaction or speed it up. It might not...
And also, is it dinitropropane? I'm not sure. Some weird isomer?
CH3--C(NO2)2--CH3
Yes it would have bad OB, but it has a C(NO2)2 part to it which you might use to make something else.
[Edited on 12-2-2005 by halogen]
F. de Lalande and M. Prud'homme showed that a mixture of boric oxide and sodium chloride is decomposed in a stream of dry air or oxygen at a red heat
with the evolution of chlorine.
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halogen
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Water would not be too undesirable as long as it is kept to a minimum
4NaNO2 + SiCl4 + 2H2O --> 4NaCl + SiO2 + 4HNO2
SiCl4 is incredibly corrosine and toxic, but I didn't think it was that hard to make.
The mixture might react with Methyl alcohol to form nitromethane/methyl nitrite and nitrous acid.
And perhaps this approach might work with other salts. Nitrates Hypochlorites etc. What would happen if you used sodium silicate in place of nitrite -
Silicon Tetrasilicate?
[Edited on 26-11-2005 by halogen]
F. de Lalande and M. Prud'homme showed that a mixture of boric oxide and sodium chloride is decomposed in a stream of dry air or oxygen at a red heat
with the evolution of chlorine.
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simply RED
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No way Na2O to be formed this way...
All reactions are theoretically impossible .
When logic and proportion have fallen sloppy dead...
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BromicAcid
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I remember when I was doing research on trimethylsilyl nitrate I found some information on tetramethylsilyl nitrite, one of the methods of preparation
was mixing a soluion of chlorotrimethyl silane with sodium nitrite in acetonitrile to give the desired trimethylsilyl nitrite. However the nitrite is
not produced in good yield, the use of silver nitrite is prefered.
A better reagent yet is trimethylsilyl nitrate, fairly stable and an excelent reagent for organic synthesis. There are references to this reagent in
the journal of organic synthesis.
[Edited on 11/26/2005 by BromicAcid]
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PHILOU Zrealone
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Why to play is harder when easier ways exists?
Look at gem-dinitro synthesis and you would for sure find 2.2-dinitropropane synthesis...from acetone...
Note that the mix is mentionned as inadvisable in most safety data books...you have to take in account you have in hand a mix of a fuel and a oxydant
mixed intimately on a molecular level...miscibility is indeed 100%.
Mix might be heat and shock senstitive!
gem-DNPr is a good and stable explosive...gem dinitro compounds have indeed much better chemical stability than the RR'CH-NO2...towards acids and
bases(in the later case thus lower shock sensitivities)...
On the other hand!
CH3-CH2-NO2 + CH2=O (1 equivalent) --> CH3-CH(NO2)-CH2OH + CH3-C(NO2)(-CH2OH)2
CH3-CH(NO2)-CH2OH --> CH3-C(NO2)=CH2
CH3-C(NO2)=CH2 + HI --> CH3-CI(NO2)-CH3 + CH3-CHNO2-CH2I
CH3-CI(NO2)-CH3 + AgNO2 --> CH3-C(NO2)2-CH3 + CH3-C(NO2)(-O-N=O)-CH3
The nitronitrite compound may be allowed to react with HI to recover CH3-CI(NO2)-CH3...
The lability of the alfa halogeno nitrocompounds is obvious if you consider the fact Chlorpicrine is a war gas...
Also many reactions of alfa- halonitro compounds allow acces to gem dinitros...Ter Meer reaction if I remember wel.
Also:
Aceton + P2Cl5 --> 2.2-dichloropropane -aceton + NaI->
2.2 -diiodopropane -exces AgNO2->
(CH3)2C(ONO)2 (turns into aceton) + (CH3)2C(NO2)(ONO) + (CH3)2C(NO2)
[Edited on 1-12-2005 by PHILOU Zrealone]
PH Z (PHILOU Zrealone)
"Physic is all what never works; Chemistry is all what stinks and explodes!"-"Life that deadly disease, sexually transmitted."(W.Allen)
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