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00:29
> Organic Chemistry AND PHYSICAL CHEMISTRY USING NUCLEAR REACTION OF FISSION REACTION
 
2 hours later…
02:44
1
Q: Do quaternary sulfur dications exist?

user73910We know that sulfur can form sulfides $\ce{R2S}$, with two substituents bonded to it. The simplest example of this would be hydrogen sulfide. However, sulfur can also form sulfonium ions $\ce{R3S+}$, where 3 substituents are attached to the sulfur atom and a negatively-charged counteranion is p...

 
3 hours later…
05:38
@orthocresol Such a big name for a small homework question :-|
I am disappointed.
 
3 hours later…
08:15
@orthocresol "Nuclear reaction of fission reaction" sounds like "PIN number"
 
6 hours later…
14:08
3
Q: Why is a LCAO necessary within Hartree Fock?

JacobAs I understand it, the electronic Schrödinger equation cannot be solved for polyelectronic systems. To circumvent this problem in the Hartree-Fock method, it is assumed that the polyelectronic wavefunction can be written as a combination of single-electron, molecular orbitals. To satisfy the ant...

 
1 hour later…
15:09
5
Q: Are the triply-bonded carbons in pyridyne (and benzyne) sp-hybridised?

BlueI was given this molecule (3,4-pyridyne) in a test: I had to find out if it had any atoms which had a hybridization state other than sp2. The solution said that it doesn't have any. But aren't the triply-bonded carbon atoms sp-hybridized? Edit: Benzyne also has a similar structure, with a dis...

7. (1.99223) BD ( 1) C  1- C  2
               ( 50.00%)   0.7071* C  1 s( 50.02%)p 0.99( 49.75%)d 0.00(  0.17%)
                                                  f 0.00(  0.06%)
8. (1.92129) BD ( 2) C  1- C  2
               ( 50.02%)   0.7073* C  1 s(  0.39%)p99.99( 99.38%)d 0.46(  0.18%)
                                                  f 0.13(  0.05%)
9. (1.68001) BD ( 3) C  1- C  2
               ( 50.00%)   0.7071* C  1 s(  0.00%)p 1.00( 99.84%)d 0.00(  0.12%)
                                                  f 0.00(  0.05%)
C1 (the alkyne carbon) is effectively sp hybridised, just not in the way we think...
 
3 hours later…
18:29
Nominations close soon.
 
1 hour later…
19:38
No you're not getting a star for that
:-|
Whoa that was fast
Almost like you're behind my shoul . . . HOLY
19:59
3
Q: LiOH hydrolysis of methyl 2,2-dimethoxyacetate not giving product?

chemreseI am forming 2,2-dimethoxyacetic acid from its methyl ester, and below is the experimental protocol I am following (from Tetrahedron 2016, 72 (3), 420–430): 2,2-Dimethoxy Acetic Acid Formation Add lithium hydroxide monohydrate ($\pu{89.5 mmol}$, $\pu{3.75 g}$, $\pu{1.2 equiv}$) to a s...

20:11
You win.
20:53
Not sure who to vote for this time. At least last time I could vote for myself :P
21:26
1st and 2nd vote were easy for me. But I might leave my 3rd vote open.
Mm, this one is tough. I've made my choices, and I think they're pretty much final, but none of them were completely natural choices. I joke about it, but the last election was not easy either...
21:42
Anyway, last time, 199 users voted. So far, we are at 31.
I wonder if it will hit 200.

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