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as because in case of tropylium cation extra stability arises from the attainment of aromaticity as well as extensive conjugation.It contains 6π electrons which is according to Huckel's rule indicate towards the aromatic compound as well as the system is also a resonance stabilized because of delocalisation
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Why tertiary carbocation is more stable?
due to hypercongugation
Is carbon a more stable element than silicon?
Silicon is more stable.
Does oxygen atoms become more stable or less stable when oxygen forms compounds?
Oxygen becomes more stable when it forms compounds.
In matters lowest energy state does it tend to be more stable?
Yes it tends to be more stable.
Are atoms more stable when combined?
No. They combine when the compound is more stable. Any system will tend to go toward a more stable state. If a molecule is less stable than the individual atoms there is a good chance it will fall apart.
Why tertiary carbocation is more stable?
due to hypercongugation
Why Benzyl carbocation more stable than phenylethyl carbocation?
Stabilization of a carbocation can also be accomplished by reasonance. If the cationic carbon is adjacent to an unsaturated system, the positive charge can be delocalized over adjacent atoms resulting in greater stability of the carbocation. Thus, the carbocations showing resonance are far more stable than those in which the resonance is not flesible.
Is it possible for all reactions which have a carbocation intermediate to undergo rearrangement reaction to get a more stable cation?
No, in general
Why would aryloxiranes be especially sensitive to low pH?
All epoxides are sensitive to low pH as they are susceptible to hydrolytic cleavage by H+ ions. An aryloxirane, basically an epoxide attached to an aromatic ring, is more sensitive to low pH because if the epoxide ring is broken, it will form a benzylic carbocation which is much more stable than the primary carbocation that would form from the hydrolyic cleavage of a long chain epoxide. Draw the mechanism for the hydrolytic cleavage of 2-phenyloxyrane and it should become clear.
When atoms combine to form compound do they become more stable or less stable?
More stable
Why tertiary alcohol is more reactive?
Tertiary alcohols are also bonded to three other carbon atoms (whereas secondary alcohols are bonded to two, primary alcohols to one). These other carbon atoms share their electronegative charges with the middle carbon.
Why do you get isopropyl benzene on treating benzene with 1 - chloropropane instead of n - propyl benzene?
Your question is in regard to the "Friedel-Crafts Alkylation" reaction, which is probably the most common way to add an alkyl group to a benzene ring. The reaction is carried out with benzene or a substituted benzene, an alkyl chloride or bromide, and a small amount of a Lewis acid catalyst; usually either FeCl3 or AlCl3 when an alkyl chloride is the reagent, or FeBr3 or AlBr3 when an alkyl bromide is the reagent.The first step in the reaction forms a carbocation when the halide on the alkyl group is removed by the Lewis acid. If 1-chloropropane is used, the first step of the reaction is:H3C-CH2-CH2Cl + FeCl3 ''Ä¢√á H3C-CH2-C+H2 + Fe{Cl}4-Primary carbocations are the least stable ones after the methyl carbocation, therefore they will almost always rearrange if possible to yield a secondary or sometimes even a tertiary carbocation. Thus, the next thing to occur is formation of a secondary carbocation. This happens when a hydrogen atom on the middle carbon migrates to the carbon bearing the positive charge and brings two electrons with it. This is called a hydride shift because the hydride ion is H-, and it takes place as shown:H H| '¬ß¬µ |H3C-CH-C+H2 ''Ä¢√á H3C-C+-CH3(I apologize, but these were the best graphics I could do given the tools available here.) The equilibrium shown is in much greater favor of the secondary carbocation, however I would not be surprised if some propyl benzene is formed.So, there are two parts to the answer to your question: 1) A primary carbocation is formed when a 1-chloro-n-alkane reacts with a strong Lewis acid. 2) Because the reaction of a carbocation with benzene is slower than formation of the primary carbocation, the primary carbocation has time to undergo a hydride shift, thereby creating a much higher concentration of the more stable isopropyl carbocation.P.S.: Have you studied which groups activate a benzene ring and which groups deactivate the ring, and which groups direct subsequently added groups to the meta position and which groups direct groups later added to the ortho and para positions? If you have, what compound would you expect to be the major product of the reaction? What can one do practically speaking when performing the reaction above to minimize multiple alkylations?I'm correcting two molecular drawings included in the original posting. They did not come out anywhere close to how they appeared on the screen when I wrote the first answer.The first one didn't come out that badly:+H3C-CH2-CH3 -----> H3C-CH2-CH2 + Fe(Cl)4-.The second graphic was a drawing of the secondary (isopropyl) carbocation:+H3C-CH-CH3. (The "+" symbol is normally drawn much closer to the atom bearing the formal positive charge. It was not possible to do this here as answers rarely require graphics.)
What is a more stable atom between lithium and gold?
Gold is more stable.
Is carbon a more stable element than silicon?
Silicon is more stable.
Is hydride ion more stable or less stable than H-atom?
hydried is more stable than H-atom
Why the benzene ring is not much reactive as the pyrrole?
pyrrole is more reactive towards electrophillic aromatic substiotution because it is able to stabilize the +ve charge of the intermediate carbocation
How stable is the UK?
A t least as stable as, say, the USA or Canada, if not more stable. More stable than Iran, Iraq, Pakistan, Afghanistan, Congo. But not as stable as Saudi Arabia, UAE, Oman, Qatar.
