new ernergetic materials

I think the nitration of pentazole gave a strong energetic material.

N5-NO2

for instance
3-nitro-1,2,3,4,5-cyclopentazole

What made you think that?

Cyclopentazole should be CN5 squeleton!
The possible nitration in 3 would mean that C has 2 H and one of the N has 1:
CH2(-N=N-)2NH -HNO3-> CH2(-N=N-)2N-NO2 + H2O

(O2N)2C(-N=N-)2NH
O2N-CH(-N=N-)2NH
O2N-CH(-N=N-)2N-NO2
(O2N)2C(-N=N-)2N-NO2

Should then be also investigated!

5 membered nitrogen rings do not exist (yet ), except the pentazole ion . Even that has only been isolated as a compund with AsF6-, I think, and that exploded while they were carrying out tests on it. You might want to check that, there may have been more developments but that was the last that I heard on the subject.
Tetrazole exists, I have 2kg of 5-aminotetrazole. Even on it's own it is quite energetic, if you heat some up on a spoon after a short while it will start a fairly violent self-sustaining decomposition.
The nitrate salt is really good stuff, it is the only nitrate salt I've encountered that is easy to set off with a hammer blow . I would guess that it would be powerful compared to other nitrates, too. A great use for it is 5-ATZN dynamite, but I don't make it too often since I have not found any safety data for the nitrate. Also when I make a batch of 5-ATZN I end up burning most of it since it makes a really nice flame .

(>N=N=N=N=N<-(NO2)

Here a little draw of nitropentazole.

Nick, you should try oxidizing the amino group in your 5-aminotetrazole to a nitro group, ozone being the oxidant. Just imagine 5-nitrotetrazole!

I would rather not reveal my exact source, but I will say that a bit of searching on the net and a few nice e-mails can get you a lot of nice things .
The original plan was to make 5-aminotetrazole dinitramide, N4HCNH3(+) (-)N(NO2)2, but without dry ice (ie, using my freezer which gets to around -22*C) the yield of KDN that I've been getting is hardly worth bothering to make, and I don't get dry ice very often.
HNO2 turns it into ditetrazolyltriazine, which seems surprisingly stable (the sample I made is still here, and still seems normal...), but all oxidising agents I've tried so far turn it into a load of bubbles .

tetrazoles

Why ditetrazoyltriazine and not 2,4,6-tritetrazoyl-1,3,5-triazine ?
A other examble of the tetrazine family is
3,6-bis(3,5-diaminopyrazoyl)-1,2,4,5-tetrazine a stable expensive secondary explosive.

sorry, a little copy mistake in my last post.
The correct name of course

3,6-bis(3,5-diaminotetrazolyl)-1,2,4,5-tetrazine

Ok! I see!
N5-NO2 thus nitrocyclopentaazapentadiene!

(-N=N-)2N-NO2

NH2-CHN4 -->
perchlorate NH2-CHN4.HClO4
nitrate NH2-CHN4.HNO3
nitroformate NH2-CHN4.HC(NO2)3

Whatabang!

Why not

pentanitrocyclopentaazapentadiene
>NNO2-NNO2-NNO2-NNO2-NNO2->

or

pentanitrocyclopentaazapentadienecyclopentadiene
[{5[(-N-N-)2N-NO2]}C5H]

the topic question
was nitrocyclopentazole
and not
nitropentazole

>pentanitrocyclopentaazapentadiene >NNO2-NNO2-NNO2-NNO2-NNO2-
-This is pentanitrocyclopentaazapentane!
No dienicdiaza -N=N- here!

>pentanitrocyclopentaazapentadienecyclopentadi>ene >[{5[(-N-N-)2N-NO2]}C5H]
-Could you make a drawing, I think there is something wrong here

>the topic question was nitrocyclopentazole >and not nitropentazole
-Unless I'm wrong you wrote in the first post:
"I think the nitration of pentazole gave a strong energetic material. N5-NO2
for instance 3-nitro-1,2,3,4,5-cyclopentazole"

I don't know what to think or to answer, you are rather confusing

When your cyclopentaazapentadiene nitrated with five than the nito name

cyclopentaazapentadienepentanitrate

and the formula name

1,2,3,4,5-pentanitrocyclopentazole

and your aza name

1,2,3,4,5-pentanitro-1,2,3,4,5-pentazacyclopentane



The draw to the double-cyclo-compound later !!

examples

bromo-RDX?

Sorry to say but genealogy has nothing to do with bromination.
Unless it was a bad taste joke , you have made a mistake in the link!

This was a insinuation to some members in the forum which scattering some topic themes with crap.

wow, from the big master. Let´s mark the day red in the calendar.

Hmm, would the bromine change places with the nitro-group on the aza-function?

This would be bad... maybe one could attach a protective-group to the the aza-function, then halogenate then remove the protective-group and oxidize.

Arrrgh....how complicated this got again.

BTW, pat. GB 615793 mentions a linear nitramine with 3 nitro-groups on the aza-functions and 2 nitrate-groups at the ends of the chain. It has a MW over 400g/mol, despite this it performed very well in the Trauzl test(580ccm), and this at a density of 0.7g/ccm...

Not a big surprise then, this simple molecule with OB near zero is sensitive as hell(3 times more sensitive than PETN)...

Maybe stabilization via hydrogen-bonding? - What if one would replace two of the nitro-groups with 2 -NH2-functions instead of it ....

HLR

A nice link

So you can make sodium tetrazolide by reacting hydrogen cyanide and sodium azide. To get 1-nitrotetrazole, react this with a nitryl salt. And to get 1-azido-5-nitrotetrazole, do the above mentioned procedure but use cyanogen chloride (if you dare ) or, alternately, use chlorazide and hydrogen cyanide and then react with a nitryl salt or use straight nitryl cyanide, then react your product with sodium azide.
To get 5-azido-1-nitrotetrazole, use cyanogen azide and hydrazoc acid, then react with a nitryl salt.
Both of these compounds have perfect OB and presumably VoDs, as 5-nitrotetrazole has a VoD of more than 8.5 km/s.