Pyrovus - 7-12-2005 at 23:01
I'm not sure whether this is true or not, but I vaguely remember reading somewhere that for every compound containing hydrogen, there exists a
fluorine analogue. This got me thinking as to the existence of OF3+, the fluorine analogue of the hydronium ion. This should be an insanely powerful
oxidiser, featuring oxygen in the +4 (!) state. Of course, the trouble would be finding an anion to go with it that isn't oxidised. Anyway, googling
yeilded nothing on it 
. Does anyone know if this ion is indeed stable?
guy - 7-12-2005 at 23:40
I don't see how it could exist because F- or F don't have an empty slot for it to accept a pair electrons like a H+.
Pyrovus - 7-12-2005 at 23:58
Well, if you were to try to make it in an analogous way to H3O+, you would be reacting F+ with F2O (which isn't likely to happen, as you're not going
to find F+ ions under any conditions remotely approaching normal). But in terms of structure alone, there's nothing wrong with it - all you've got is
an oxygen which has lost an electron, and as a result needs to make three covalent bonds in order to have 8 in the outer shell, and these three bonds
are made with fluorine atoms:
F
|
:O(+) --- F
|
F
It's isoelectric with NF3:
F
|
:N --- F
|
F
[Edited on 8-12-2005 by Pyrovus]
sparkgap - 8-12-2005 at 01:38
Does anyone here have access to Elsevier publications? I found a journal article that might answer Pyrovus' question on the trifluorooxonium ion's
existence:
Crawford, M. and Klapötke, T.M., J. Flourine Chem. 99, 151-156 (1999)
http://dx.doi.org/10.1016/S0022-1139(99)00139-6
and a corrigendum:
http://dx.doi.org/10.1016/S0022-1139(00)00237-2
Hope this helps...
sparky (~_~)
[Edited on 8-12-2005 by sparkgap]
woelen - 8-12-2005 at 09:44
This is not such a strange question, because the ion NF4(+) exists and is synthesized in the recent past.
Crawford, M. and Klapötke, T.M., J. Fluorine Chem. 99, 151-156 (1999)
sparkgap - 10-2-2006 at 22:28
(misspelled earlier. 
)
sparky (~_~)
Attachment: OF3+.pdf (181kB)
This file has been downloaded 1119 times
The corrigendum to Crawford and Klapötke
sparkgap - 10-2-2006 at 22:41
is attached
sparky (~_~)
Attachment: OF3+ corrigendum.pdf (64kB)
This file has been downloaded 904 times