All Questions
Tagged with electrons organic-chemistry
24
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Order of radical dimerization ability
In a question I came across recently, it was asked to arrange the following radicals in the ascending order of dimerization ability.
I have read about the triphenylmethyl radical undergoing Gomberg ...
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1
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What is resonance in actuality? (How does electron sharing, bond formation, and overlapping of orbitals take place in resonance hybrids?) [duplicate]
In this post I got an answer to the question "what is resonance".
What I understand overall is that "resonance is not something really happening physically, it is just an idea to make ...
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2
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Confusion regarding orbital, electron and Quantum no’s [closed]
Now , In some textbook I have read that orbital is nothing but the shape of electron . s,p,d orbitals etc.
So , after knowing shape of an orbital . I got to know that inside the orbital is an electron ...
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2
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Number of π electrons in all trans-2,4,6-octatrienoic acid
Sketch the Lewis structure of all trans-2,4,6-octatrienoic acid.
(a) Consider the delocalized π electrons. Employ the particle-in-a-box model. Drawing on your knowledge about the occupation of ...
user85551
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Organic Based Photocathode
What organic molecules have a relatively small work function, preferably in the visible spectrum? Polycyclic aromatic hydrocarbons are in the low UV spectrum, making it unsuitable for the photocathode ...
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Why does allyl anion have only two resonance structures?
There are only two resonance structures of allyl anion with negative charge distributed over positions 1 and 3:
$$\ce{\overset{-}{C}H2-CH=CH2 <-> CH_2=CH-\overset{-}{C}H2}.$$
What's the criteria ...
- 1,134
3
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1
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359
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But what are anti-bonding pi-orbital? In search for an intuitive explanation [closed]
Imagine that you want to explain to an undergraduate why they have to to shade the pi-orbitals in a symmetrical way, i.e. dark on top (+), white on bottom (-) for two neighbouring pi-orbitals because ...
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Why do we see complementary colors in UV/Vis Spectroscopy? [closed]
From what I read, a compound that absorbs visible light will produce a complementary color (using the color wheel), that can be seen. Why is this the case? Is it because, for example, if a molecule ...
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Confused about identifying delocalized electron pairs in Isoniazid
I have to identify delocalized electron pairs in Isoniazid (pairs not shown in the image below):
I know the nitrogen in the ring has a localized electron pair, since it already forms a pi bond. I'm ...
3
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1
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512
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Are all lone pairs considered as π-electrons?
According to me, in methylenepyran 8 π-electrons are present as there are 3 double bonds. Therefore, 2 × 3 = 6 π-electrons and 2 π-electrons as one of the two lone pairs of oxygen will participate in ...
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Why doesn't Silicon act as the basis of a class of compounds like Carbon is for organic compounds?
Carbon is the basis of organic materials in large part due to it's four valence electrons. Silicon also happens to have four valence electrons as well but does not serve as a basis for a large set of ...
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Possible to Calculate Electronic Charge Distributions/Densities for Organic Molecules?
I was wondering if there are any programs that can calculate the electronic charge distributions around an organic molecule, possibly in the form of a volumetric charge volume density? I am reading up ...
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4
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Do indigo and leuco-indigo have fully conjugated pi systems?
I've just come across a figure indicating the positions of conjugated bonds in indigo and leucoindigo, and I'm quite confused about why both molecules aren't fully conjugated.
My reasoning is as ...
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5
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399
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Amine Inversion and Paramagnetism
In amine inversion, there is a planar $sp^2$ intermediate.
The electron pair transferred from the blue lobe to the red one during the inversion. It is natural to assume, for a layman like me, that ...
- 1,050
6
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Inductive effect on stability of free radical
How does inductive effect affect the stability of free radical?
I can't seem to understand whether the carbon with the odd electron is deficient or not.
That is, whether a +I group, like alkyl, will ...
- 111
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644
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Some materials emit more photoelectrons than others - why?
I've been experimenting with some materials by changing the wavelength of the incident light on the material and detecting photoelectrons, like in the diagram below:
I might get a response that looks ...
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1
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Why m-hydroxybenzoic acid has higher acidity then p-hydroxybenzoic acid?
Why m-hydroxybenzoic acid has higher acidity than p-hydroxybenzoic acid?
I have a reasoning that since hydroxy group is an activating group, then it increases the electron density on its para ...
- 2,331
3
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1
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Arrow pushing: why does the O become positive when its lone pair becomes a double bond?
In the following image:
The oxygen's top pair of electrons forms a double bond.
But in a covalent bonds, aren't the electrons shared? So won't the oxygen still have these $2$ electrons (that it ...
- 2,853
2
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1
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667
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The proper explanation for the general formula of the DU? [duplicate]
I found a formula for the degree of unsaturation (DU) in Clayden’s Organic Chemistry. It explains, simply, the unsaturation with the difference in H atoms. Then I stumbled upon the general formula:
$$...
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2
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Bromine with 10 electrons
On a test question, my organic chemistry professor gave us a really big molecule and told us to give list the formal charges on each atom. There was a $\ce{Br}$ with 3 lone pairs and a double bond to ...
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Is the smallest or largest diameter important for the color of a molecule?
I learned that phenol absorbs longer wavelengths than benzene because the electron cloud is bigger.
But what is about Penta-1,2,3,4-tetrien (1) and 2,2,-Dimethylpropane (2)?
(1) has the largest ...
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2
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799
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Is Sodium metal more reactive towards an alkyl halide or an alcohol in a protic polar solvent?
Will Sodium metal donate its electrons to bromine in 1,3-dibromopropane or to the hydroxyl group in ethanol in a polar protic solvent?
This question comes from a problem:
'What is the major product ...
4
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2
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Are there any negatively charged electrophiles, or simply neutral and positive?
When reading up on electrophilic aromatic substitution, most resources refer to electrophiles as positively-charged species, "in general" or "mostly".
What are non-positively charged electrophiles? ...
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How are electrons in conjugated molecules excited? [duplicate]
I have recently started reading about colour in organic molecules and come across conjugation of pi bonds. My question is pretty short... In transition metal ions I understand colour is caused by ...
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