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Fusionfire
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Very interesting. Anyone have this pdf about atomic hydrogen?
http://pubs.acs.org/doi/pdf/10.1021/ja01392a011
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rstar
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I think the strongest base is n-Butyllithium
eh... don't laugh...
..I might be wrong !!
"A tidy laboratory means a lazy chemist "
- Jöns Jacob Berzelius
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Adas
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What about n-Pentylrubidium?  JK
Rest In Pieces!
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turd
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Quote: Originally posted by Methyl.Magic  | | The organotellurium have the palm of the most putrid compound. Chemistry of telluride cannot be really investigated because chemists wouldnt work with
this element anymore since they lost their wife and their friends because when some telluride compound are in the body they slowly diffuses a stroug
garlic odour out of the skin that can lasts up to one year according to some source I've forgotten... |
That's mostly old wives' tales. Yes they're bad, but not that bad. The body gets rid of Te compounds quite easily (easier than Se).
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rstar
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n-hexylcesium and n-heptylfrancium ? 
"A tidy laboratory means a lazy chemist "
- Jöns Jacob Berzelius
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AirCowPeaCock
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n-octylununennium?
[Edited on 1-26-2012 by AirCowPeaCock]
BOLD
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GreenD
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TROLL
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White Yeti
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Hold on, don't jump to conclusions just yet.
"Ja, Kalzium, das ist alles!" -Otto Loewi
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Mr. Wizard
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Fusionfire, I hadn't seen that interesting pdf about atomic hydrogen. I found a page in my McGraw / Hill Encyclopedia of Chemistry 2nd Edition, that
gives104.2 kcal / mole at 25 degrees C which corresponds well with the value in your reference. Converting from joules it is a close match.
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Fusionfire
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| Quote: Originally posted by Mr. Wizard | Fusionfire, I hadn't seen that interesting pdf about atomic hydrogen. I found a page in my McGraw / Hill Encyclopedia of Chemistry 2nd Edition, that
gives104.2 kcal / mole at 25 degrees C which corresponds well with the value in your reference. Converting from joules it is a close match.
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Hmmm, fascinating scan you provided. I'm going to buy that book when I get back from my holidays 
It is clear that anyone who makes atomic hydrogen not only makes a powerful fuel/explosive/energy store, but also a very useful precursor chemical
that can be used to produce all sorts of reactive products (reduce reactive metals, H2O2, produce hydrides, etc.)
Care to start a thread in a suitable sub-forum (I think technochemistry) about ideas to try to stabilise atomic hydrogen?
Would continuous irradiation with photons of the right frequency work if the goal is to keep the hydrogen atoms as positive hydrogen ions + free
electrons?
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Mr. Wizard
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I bought the book from some guy at a swap meet for next to nothing, and I see from a quick search of the name you can still buy it for next to nothing
($3.97) It is a fairly large book, filled with all kinds of esoteric information. I found the information about the monatomic hydrogen after my first
post on this thread.
I don't care to or feel qualified to start a thread about it, but if want to feel free.
The method used now to isolate the material is to use the atoms that have their electron and proton spins aligned so as to make it possible to keep
the atoms aligned in a magnetic field. Since atoms sharing the same magnetic spin or alignment cannot share the same orbital they can't combine to
form H2. I can't say I understand the Pauli exclusion principle but it is based on it. I think its like bar magnets repelling like poles. When the bar
magnets flip over the H atoms can combine, with the protons sharing the two electrons that have their spins in opposite directions. The spinning
electron generate a magnetic pole. Anyone with more understanding please explain it better.
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Fusionfire
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| Quote: Originally posted by Mr. Wizard | I bought the book from some guy at a swap meet for next to nothing, and I see from a quick search of the name you can still buy it for next to nothing
($3.97) It is a fairly large book, filled with all kinds of esoteric information. I found the information about the monatomic hydrogen after my first
post on this thread.
I don't care to or feel qualified to start a thread about it, but if want to feel free.
The method used now to isolate the material is to use the atoms that have their electron and proton spins aligned so as to make it possible to keep
the atoms aligned in a magnetic field. Since atoms sharing the same magnetic spin or alignment cannot share the same orbital they can't combine to
form H2. I can't say I understand the Pauli exclusion principle but it is based on it. I think its like bar magnets repelling like poles. When the bar
magnets flip over the H atoms can combine, with the protons sharing the two electrons that have their spins in opposite directions. The spinning
electron generate a magnetic pole. Anyone with more understanding please explain it better. |
OK I'll go start a thread in the technochemistry forum so we don't hijack this thread.
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Methyl.Magic
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No, tert-butyllithium is the strongest base available. Since n-butylpotassium can be made via the schlosser method I think n-butylcesium can be made
too ?
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Zan Divine
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Hardest - Rhenium diboride >10 Mohs
Cyclopentyl cesium ought to be pretty basic. It's not really possible to name the most basic.
I think the strongest acids known presently may be the carborane superacids.
[Edited on 30-1-2012 by Zan Divine]
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Adas
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Yeah, and the cool thing about it is, that they are also very gentle. Perfect H+ donor for making AP
Rest In Pieces!
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Formatik
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Superfluid helium (beyond "liquid helium") is one of the most extreme liquids known:
http://www.youtube.com/watch?v=2Z6UJbwxBZI&NR
Here is an aluminium boat floating on sulfur hexafluoride (d= > 6g/L). The gas is completely harmless to inhale:
http://www.youtube.com/watch?v=1PJTq2xQiQ0
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Phantom
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| Quote: Originally posted by nezza | | I thought lead azide has the fastest velocity of propagation for non-nuclear explosives. Does Octanitrocubane beat it ?. |
Of course. Lead Azide is in the middle with his 5180 m/s @ 4.0 g/cc.
ONC : 10100m/s
Adrenaline filled experimentalism.
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tatapouette
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| Quote: Originally posted by Methyl.Magic |
No, tert-butyllithium is the strongest base available. Since n-butylpotassium can be made via the schlosser method I think n-butylcesium can be made
too ? |
It is known that t-BuLi is stronger than n-BuLi. But, as already said, for these extreme compounds, measure of pKa is difficult, if not impossible.
Maybe another way to measure the strength of these compounds could be their rate of deprotonating the solvent in which they are used (even if pKa is
not a cinetic, but thermodynamic parameter...).
For example, it is said in wiki (and ref herein (even if not checked ^^ )) that :
- n-BuLi has a half-life of 153 hours in Et2O at 20°C ;
- whereas t-BuLi's is less than 30 minutes !!
Talking about BuLi and stuff, I was wondering : as n-BuLi seems to be 'easily' made in industry by :
n-BuX + Li(0) -> n-BuLi + LiX
with X = Cl or Br
couldn't n-BuNa or n-BuK (or others) be made using the same way ?
If so, how come these aren't produced ? Does anyone have an answer ?
[Edited on 18-11-2012 by tatapouette]
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Eddygp
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Dicyanoacetylene hottest flame of any chemical.
there may be bugs in gfind
[ˌɛdidʒiˈpiː] IPA pronunciation for my Username |
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Eddygp
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Sorry, last one was already written before. Titin, the largest protein known to man, with a molar mass of 2 million or 3 million.
there may be bugs in gfind
[ˌɛdidʒiˈpiː] IPA pronunciation for my Username |
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Zan Divine
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Only stable species are included in this list
Highest catenation observed with nitrogen atoms = 5 in the pentazenium cation (also known as pentanitrogen)
Highest thermal conductivity, He II
Metal with the highest specific heat, Lithium
Metal with the highest Young's modulus, Osmium
Most refractory material, Tantalum hafnium carbide (Ta4HfC5), with a melting point of 4215 °C.
Highest coordination number in a planar species, decacoordinated molecular wheels anions, Ta©B10− and
Nb©B10− (these are doubly aromatic! they have six delocalized pi electrons and another 10 delocalized sigma electrons)
Highest coordination number in a non-planar species, Thorium dimethylaminodiboranate, Th(H3BNMe2BH3)4. The thorium
atom is coordinated to 15 hydrogens.
Highest specific impulse (isp), Metastable Helium
[Edited on 11/18/2012 by Zan Divine]
He who makes a beast of himself gets rid of some of the pain of being a man. --HST
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weschem
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| Quote: Originally posted by simba | | Quote: Originally posted by paulr1234 | | Most potent inorganic neurotoxin (I think Botulism is actually the most potent neurotoxin but given that it is a naturally occurring protein, I'm not
sure where it should sit in a chemical taxonomy). |
Botulinum is in fact the most acutely toxic substance known. Less than a kilo is enough to kill the whole planet. |
I read just a pint is enough to kill the entire planet. Kind of scary that it can be found almost anywhere and rich white women get it injected into
their faces.
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Nitrous2000
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Hardly harmless to inhale. It is both an asphyxiant and a gas that is not easily cleared from the lungs.
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Tsjerk
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As asphyxiating as nitrogen and while typing this post I cleared my lungs of gas multiple times...
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Praxichys
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This is a myth. Turbulence from air passing through the tiny tubes in your lungs would effectively mix the gases. They will not
separate again because kinetic diffusion is far stronger than their gravitational buoyancy in each other.
Even if you took a gigantic breath of SF6 followed by normal breaths that did not fully purge it, low blood oxygen would cause you to feel out of
breath and want to breathe harder, expelling it anyway.
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