Ammonium Tri-iodide
Matt0150
I read that by dissolving iodine crystals in household ammonium, it
produces ammonium triodide. Would the formula for this be NH4I3? How
would this produce ammonium triodide? Wouldn't it produce NH4I(ammonium
ion combined with iodine ion)?
Jim A
In article <5035mf$r...@newsbf02.news.aol.com>, Matt0150
<matt...@aol.com> writes
What you actually end up with is NH3.NI3, which is often mistakenly
called nitrogen triodide instead of ammonia triodide. These are the
black crystals, and I suppose the other product of the reaction is HI.
--
With Best Regards
Jim A.
Scott Aaron Hart
Well, Jim, if you say it is not nitrogen triiodide, then that
is fine, but the formula you draw could not be called ammonia
triiodide, or even ammonium triiodide... what about the otrher
nitrogen you have shown? Ammonia triiodide, as you write,
would be something like NH3I3, not NH3.NI3. What you appear to
be talking about is that when nitrogen triiodide forms, it
is isolated as some sort of ammonium salt. (which might make
sense to me... there really is no purification other than
washing, I believe. i.e. no acid or base quenching)
I really have no idea, but your post seems to have
inconsistencies. I'd be curious to know the truth, so if you
made a mistake, or if I'm just stupid, let me know. (be nice)
Scott
--
Peter Koenig
>> >I read that by dissolving iodine crystals in household ammonium, it
>> >produces ammonium triodide. Would the formula for this be NH4I3? How
>Well, Jim, if you say it is not nitrogen triiodide, then that
>is fine, but the formula you draw could not be called ammonia
>triiodide, or even ammonium triiodide... what about the otrher
>nitrogen you have shown? Ammonia triiodide, as you write,
>would be something like NH3I3, not NH3.NI3.
IMHO the formula of ammonium trijodide should NH4(+)J3(-)
Cu
Pete
Jim A
In article <DwyG1...@murdoch.acc.Virginia.EDU>, Scott Aaron Hart
<sa...@faraday.clas.Virginia.EDU> writes
>Jim A writes:
>> In article <5035mf$r...@newsbf02.news.aol.com>, Matt0150
>> <matt...@aol.com> writes
>> >produces ammonium triodide. Would the formula for this be NH4I3? How
>> >ion combined with iodine ion)?
>> ________________________________________________________________________
>> What you actually end up with is NH3.NI3, which is often mistakenly
>> called nitrogen triodide instead of ammonia triodide. These are the
>> black crystals, and I suppose the other product of the reaction is HI.
>>
>> --
>> With Best Regards
>> Jim A.
>
>is fine, but the formula you draw could not be called ammonia
>triiodide, or even ammonium triiodide... what about the otrher
>nitrogen you have shown? Ammonia triiodide, as you write,
>be talking about is that when nitrogen triiodide forms, it
>is isolated as some sort of ammonium salt. (which might make
>sense to me... there really is no purification other than
>washing, I believe. i.e. no acid or base quenching)
>
>I really have no idea, but your post seems to have
>inconsistencies. I'd be curious to know the truth, so if you
>made a mistake, or if I'm just stupid, let me know. (be nice)
>
>Scott
I am *not* a specialist on this particular molecule, but am repeating
the contents of a textbook I read many years ago. NI3 is quite
unstable, but apparently aquires some stability by latching on to an
ammonia molecule (I put the '.' in myself for clarity. As anyone who has
made it knows very well, this stability is not very great.
Anyway I am not intending to research this subject any more. It's not an
easy substance to investigate!
Bob Burns
Actually, it forms nitrogen triiodide, NI3, which is highly unstable-
like it detonates at the slightest disturbance.
Please, if you value your fingers, eyes, and indeed life, DON'T DO IT!!!
--
"GOPHER IT!!!"
Bob Burns
rbu...@oak.kcsd.k12.pa.us
Mill Hall, PA USA
Steven Arnold
Bob Burns wrote:
>
> Actually, it forms nitrogen triiodide, NI3, which is highly unstable-
> like it detonates at the slightest disturbance.
>
> Please, if you value your fingers, eyes, and indeed life, DON'T DO IT!!!
According to Cotton & Wilkinson, Advanced Inorganic Chemistry, the black,
explosive crystals of nitrogen triiodide ammoniate have the formula
(NI3.NH3)n . The compound exists as polymeric chains that have " NI4
tetrahedra sharing corners with NH3 molecules lying between the chains
and linking them together. "
Indeed, the stuff is impressive. It should be prepared only by qualified
persons and then only in small amounts (milligrams). My advanced
inorganic chemistry students are making it in lab tomorrow. See you in
the emergency room! :-)
Steve Arnold
Assistant Professor of Chemistry
Oakland City University, Oakland City, IN
Michael Moroney
In article <DwyG1...@murdoch.acc.Virginia.EDU>,
sa...@faraday.clas.Virginia.EDU (Scott Aaron Hart) wrote:
> Jim A writes:
> > In article <5035mf$r...@newsbf02.news.aol.com>, Matt0150
> > <matt...@aol.com> writes
> > >I read that by dissolving iodine crystals in household ammonium, it
> > >produces ammonium triodide. Would the formula for this be NH4I3? How
> > >would this produce ammonium triodide? Wouldn't it produce NH4I(ammonium
> > >ion combined with iodine ion)?
> > ________________________________________________________________________
> > What you actually end up with is NH3.NI3, which is often mistakenly
> > called nitrogen triodide instead of ammonia triodide. These are the
> > black crystals, and I suppose the other product of the reaction is HI.
> >
> > --
> > With Best Regards
> > Jim A.
>
> Well, Jim, if you say it is not nitrogen triiodide, then that
> is fine, but the formula you draw could not be called ammonia
> triiodide, or even ammonium triiodide... what about the otrher
> nitrogen you have shown? Ammonia triiodide, as you write,
> would be something like NH3I3, not NH3.NI3. What you appear to
> be talking about is that when nitrogen triiodide forms, it
> is isolated as some sort of ammonium salt. (which might make
> sense to me... there really is no purification other than
> washing, I believe. i.e. no acid or base quenching)
Ammonium triiodide is a compound that should be able to be produced by
combining hydriodic acid with ammonia (producing NH4I) and adding excess
iodine, producing ammonium triiodide (NH4I3). Iodine reacts with the
iodide ion forming I3- which is why iodine is soluble in solutions of an
iodide.
What Jim was talking about is a different compound, nitrogen triiodide
(NI3), usually stablized with ammonia (I've seen various formulas for
this, NI3.NH3, NI3.2NH3 etc) It is an extremely sensitive explosive.
Note that this compound is often mistakenly referred to as "ammonium
triiodide" by the 'k00l bombz, d00d' crowd of Anarchist Cookbook fans
and is probably what the original poster was really looking for.
-Mike