instruction stringlengths 15 21.8k |
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How do I convert an Excel file with SMILES and IC50 to .smi file? |
I am currently studying rate laws and the determination of the order of a reaction. So first-order reactions remind me of linear functions $f(x)=kx$ while second-order reactions remind me of quadratic functions like $g(x)=cx^2$ in high-school algebra. Since we are dealing with reactants here, the input of the functions... |
I am currently studying rate laws and the determination of the order of a reaction. So first-order reactions remind me of linear functions $f(x)=kx$ while second-order reactions remind me of quadratic functions like $g(x)=cx^2$ in high-school algebra. Since we are dealing with reactants here, the input of the functions... |
What I want to know is if there is a relationship between the acidity of the water solution and redox reactions and if there is a relationship what favors the oxidation and what favors the reduction? Or does it depends on the reaction? |
Is there a relationship between acidity of the water solution and oxidation/reduction reactions? |
I’m trying to remove the glass panel wich is glued to the polarizer of an LCD display (an Apple iMac display where the glass is broken while the display still works and I would like to repurpose the LCD).
It seems to be fixed with a silicone-based adhesive wich is non-curing and kind of soft. Still, the process of r... |
Petroleum Benzine or Normal-Hexane for removing a silicone based adhesive? |
Are there any reactions that can be explained only on the basis of the cyclic structure of glucose rather than the open chain thus confirming its presence in the solution? Like a reaction that can only be given by hemiacetals thus confirming its presence and hence confirming the existence of the cyclic structure.
An... |
Your structure is a ketose because it is a hemiketal of a ketone. It is a furanose because it is a 5-membered (furan-oid) ring. Fructose, which your structure is not, is usually drawn as a furanose as in sucrose but fructose itself exists principally in the pyranose (6-membered ring) form.
How do you recognize the D... |
[van't Hoff equation][1] = [Le Chatelier principle][2] for temperature change in context of chemical reactions.
What the Le Chatelier principle says qualitatively as a general orinciple,, the van't Hoff's equation says quantitatively in context of temperature change for chemical reactions.
Van't Hoff equation is the... |
Your structure is a ketose because it is a hemiketal of a ketone. It is a furanose because it is a 5-membered (furan-oid) ring. Fructose, which your structure is not, is usually drawn as a furanose as in sucrose but fructose itself exists principally in the pyranose (6-membered ring) form.
How do you recognize the D... |
[van't Hoff equation][1] = [Le Chatelier principle][2] for temperature change in context of chemical reaction equilibriums.
What the Le Chatelier principle says qualitatively as a general orinciple,, the van't Hoff's equation says quantitatively in context of temperature change for chemical reactions.
Van't Hoff equ... |
[van't Hoff equation][1] = [Le Chatelier principle][2] in a particular context of temperature and chemical reaction equilibrium.
What the Le Chatelier principle says qualitatively as a general orinciple,, the van't Hoff's equation says quantitatively in context of temperature change for chemical reactions.
Van't Ho... |
[van't Hoff equation][1]
> $$\frac{d}{dT} \ln K_\mathrm{eq} = \frac{\Delta H^\ominus}{RT^2}$$
= [Le Chatelier principle][2] in a particular context of temperature and chemical reaction equilibrium.
What the Le Chatelier principle says qualitatively as a general orinciple,, the van't Hoff's equation says quantitat... |
Thanks to [vapid](https://chemistry.stackexchange.com/users/31320/vapid) and their comment
> There are editors that have 3D mode and they can display a 3D molecule in 2D manner. MarvinSketch is first that comes to my mind, but there are probably more.
I figured a crude solution, which I hope might as well serve a... |
I've seen a paper by Sikalov \[[1](https://doi.org/10.1007/s00214-019-2524-0)\] that says that $\ce{IH3}$ and $\ce{IH5}$ should be observable. Has anyone actually tried to synthesize such molecules?
### References
1. Sikalov, A. A. Hypervalent Halogen Hydrides $\ce{HalH_n}$ ($\ce{Hal}$ = $\ce{Cl},$ $\ce{Br},$ $... |
[van't Hoff equation][1]
> $$\frac{d}{dT} \ln K_\mathrm{eq} = \frac{\Delta H^\ominus}{RT^2}$$
= [Le Chatelier principle][2] in the particular context of temperature and chemical reaction equilibrium.
What the Le Chatelier principle says qualitatively as a general principle, the van't Hoff equation says quantitati... |
[van't Hoff equation][1]
> $$\frac{d}{dT} \ln K_\mathrm{eq} = \frac{\Delta H^\ominus}{RT^2}$$
= [Le Chatelier's principle][2] in a particular context of temperature and chemical reaction equilibrium.
What the Le Chatelier's principle says qualitatively as a general principle, the van't Hoff equation says qu... |
[van 't Hoff equation][1]
> $$\frac{\mathrm d}{\mathrm dT} \ln K_\mathrm{eq} = \frac{\Delta H^⦵}{RT^2}$$
= [Le Chatelier's principle][2] in a particular context of temperature and chemical reaction equilibrium.
What the Le Chatelier's principle says qualitatively as a general principle, the van 't Hoff equa... |
Thanks to [vapid](https://chemistry.stackexchange.com/users/31320/vapid) and their comment
> There are editors that have 3D mode and they can display a 3D molecule in 2D manner. MarvinSketch is first that comes to my mind, but there are probably more.
I figured a crude solution, which I hope might as well serve a... |
[van 't Hoff equation][1]
> $$\frac{\mathrm d}{\mathrm dT} \ln K_\mathrm{eq} = \frac{\Delta H^⦵}{RT^2}$$
= [Le Chatelier's principle][2] in a particular context of temperature and chemical reaction equilibrium.
What the Le Chatelier's principle says qualitatively as a general principle, the van 't Hoff equa... |
Thanks to [vapid](https://chemistry.stackexchange.com/users/31320/vapid) and their comment
> There are editors that have 3D mode and they can display a 3D molecule in 2D manner. MarvinSketch is first that comes to my mind, but there are probably more.
I figured a crude solution, which I hope might as well serve a... |
In October 2019 a series of new transition metal complexes has been reported in an article published in *Nature* by Garçon et al. \[[1](https://doi.org/10.1038/s41586-019-1616-2)\].
Among these, two palladium complexes have a near-perfect hexagonal arrangement of three hydride and three magnesium-diisopropylphenyl lig... |
I am trying to find out correlation for ignition delay for alkane fuels. The activation energy part of the correlation gives me a negative value.
For the ignition delay formulation, is it possible to have an overall activation energy part being negative?
$$\tau = P^aT^b\phi^c\exp\left(\frac{E_\mathrm{a}}{RT}\right... |
Is it possible to have a negative overall activation energy for a whole reaction mechanism? |
I’m trying to remove the glass panel wich is glued to the polarizer of an LCD display (an Apple iMac display with broken glass but working LCD wich I would like to repurpose).
It seems to be fixed with a soft, non-curing, silicone-based adhesive . But the process of removing it is terribly tedious and I was wonderin... |
I've been looking into making pure copper (I) chloride, but using ascorbic acid is relatively expensive for me. I'd also like to avoid having water in any part of the synthesis to minimize the contamination with copper (II) chloride. Therefore, I came up with the idea of doing the synthesis in ethanol and bubbling thro... |
I have encountered such question on my exercice,
> How many moles of Na2SO4 we have to add into a saturated 0.5 L
> solution of Ag2SO4 so that the concentration of Ag is 4.0 * 10^-3
> mol/L? (Ksp = 1.4*10^-5)
And this is what I did:
- Find out first [SO4 2-] in a normal saturated solution: $$K_{sp} = [Ag]^2... |
I have encountered such question on my exercice,
> How many moles of Na2SO4 we have to add into a saturated 0.5 L
> solution of Ag2SO4 so that the concentration of Ag is 4.0 * 10^-3
> M? (Ksp = 1.4*10^-5)
And this is what I did:
- Find out first [SO4 2-] in a normal saturated solution: $$K_{sp} = [Ag]^2[SO_... |
What makes this molecule achiral? |
> How many moles of $\ce{Na2SO4}$ we have to add into a saturated $\pu{0.5 L}$ solution of $\ce{Ag2SO4}$ so that the concentration of $\ce{Ag}$ is $\pu{4.0 \times 10^-3 M}$? ($K_\mathrm{sp} = 1.4 \times 10^{-5}$)
- I found out first $\ce{[SO4^2-]}$ in a normal saturated solution:
\begin{align}
K_\mathrm{sp} &= [... |
How to calculate the amount of sodium sulfate needed to lower the silver ion concentration of a saturated silver sulfate solution? |
> How many moles of $\ce{Na2SO4}$ we have to add into a saturated $\pu{0.5 L}$ solution of $\ce{Ag2SO4}$ so that the concentration of $\ce{Ag}$ is $\pu{4.0 \times 10^-3 M}$? ($K_\mathrm{sp} = 1.4 \times 10^{-5}$)
- I found out first $\ce{[SO4^2-]}$ in a normal saturated solution:
\begin{align}
K_\mathrm{sp} &= [... |
> How many moles of $\ce{Na2SO4}$ we have to add into a saturated $\pu{0.5 L}$ solution of $\ce{Ag2SO4}$ so that the concentration of $\ce{Ag}$ is $\pu{4.0 \times 10^-3 M}$? ($K_\mathrm{sp} = 1.4 \times 10^{-5}$)
- I found out first $\ce{[SO4^2-]}$ in a normal saturated solution:
\begin{align}
K_\mathrm{sp} &= [... |
Is bonding specifically for and between electrons and why cant 2 atoms share different particles of same charge , spin and different mass?
Why there aren't muon - electron bonds or whatever?
|
Is bonding specifically for and between electrons and why cant 2 atoms share different particles of same charge , spin and different mass?
Why there aren't muon - electron bonds or whatever?
Why is the octet (or eightteen valenece electrons) rule only for electrons and not for all particles with similar charge an... |
Now scientists have found ways to cool atoms to temperatures far lower than we ever could before and maintain them for longer, but what if we had one of those particles and then heated it as fast we could and then to the highest temperature we could as instantly as possible. Like how substances react to rapid freezing ... |
What would happen if we supercool and then superheat an atom very abruptly? |
Wikipedia, in the article on Orbital Hybridisation, states the following:
> One misconception concerning orbital hybridisation is that it incorrectly predicts the ultraviolet photoelectron spectra of many molecules. While this is true if Koopmans' theorem is applied to localised hybrids, **quantum mechanics requires... |
I wonder if [this answer](https://chemistry.stackexchange.com/a/125176/16035) to *What would happen if we supercool and then superheat an atom very abruptly?* goes far enough.
I almost wrote the comment:
>I don't think we can even talk about the temperature of a single atom, at least based on its kinetic energy... |
Has a concept of temperature ever been defined in the context of a single atom? |
I wonder if [this answer](https://chemistry.stackexchange.com/a/125176/16035) to *What would happen if we supercool and then superheat an atom very abruptly?* goes far enough.
I almost wrote the comment:
>I don't think we can even talk about the temperature of a single atom, at least based on its kinetic energy... |
I wonder if [this answer](https://chemistry.stackexchange.com/a/125176/16035) to *What would happen if we supercool and then superheat an atom very abruptly?* goes far enough.
I almost wrote the comment:
>I don't think we can even talk about the temperature of a single atom, at least based on its kinetic energy... |
I wonder if [this answer](https://chemistry.stackexchange.com/a/125176/16035) to *What would happen if we supercool and then superheat an atom very abruptly?* goes far enough.
I almost wrote the comment:
>I don't think we can even talk about the temperature of a single atom, at least based on its kinetic energy... |
During a reaction I use sodium hydroxide and create sodium silicate as a by-product.
I am curious **if there is a way to recycle that sodium silicate into sodium hydroxide**?
I am not a chemist, just have to use chemistry and I love it.
My best guess is to use Hydrogen Peroxide and Heat:
Na2SiO3 + H2O2 = N... |
According to my book the answer is given that structure III is the most stable because all the atoms have complete octets...but I think it should be II because of (a) structure III has positive charge on a highly electronegative atom and (b)in structure II the positive charge can be stabilized by the Indicutive effect ... |
Which one is the most stable canonical structure?And why? |
During a reaction I use sodium hydroxide and create sodium silicate as a by-product.
I am curious **if there is a way to recycle that sodium silicate into sodium hydroxide**?
I am not a chemist, just have to use chemistry and I love it.
My best guess is to use Hydrogen Peroxide and Heat:
Na2SiO3 + H2O2 = N... |
**Here's the question:**
> If the solubility of Pb(OH)$_\mathrm{2}$ is $0.155$ g/L, then the concentration of each ion in a saturated solution of Pb(OH)$_\mathrm{2}$ is
A. [Pb$^{2+}$] = $0.155$ g/L and [OH$^{-}$] = $0.155$ g/L
B. [Pb$^{2+}$] = $0.052$ g/L and [OH$^{-}$] = $0.103$ g/L
**C. [Pb$^{2+}$] = $6.4... |
Finding the concentration of each ion in this saturated solution? |
### Question
> If the solubility of $\ce{Pb(OH)2}$ is $\pu{0.155 g/L},$ then the concentration of each ion in a saturated solution of $\ce{Pb(OH)2}$ is
> **A**. $[\ce{Pb^2+}] = \pu{0.155 g/L}$ and $[\ce{OH-}] = \pu{0.155 g/L}$
> **B**. $[\ce{Pb^2+}] = \pu{0.052 g/L}$ and $[\ce{OH-}] = \pu{0.103 g/L}$
> **C*... |
### Question
> If the solubility of $\ce{Pb(OH)2}$ is $\pu{0.155 g/L},$ then the concentration of each ion in a saturated solution of $\ce{Pb(OH)2}$ is
> **A**. $[\ce{Pb^2+}] = \pu{0.155 g/L}$ and $[\ce{OH-}] = \pu{0.155 g/L}$
> **B**. $[\ce{Pb^2+}] = \pu{0.052 g/L}$ and $[\ce{OH-}] = \pu{0.103 g/L}$
> **C*... |
I find it very confusing and hard to memorize.
Is there a way to deduce it, like understanding how it is derived, or is it just one of a lot of ways you can do it but is the standard one?
Do people use to test every possible reagent or combination of reagents and see if something happens or is it deducible? |
Is there an edible version of nylon string? |
I was reading a paper (Phil. Trans. R. Soc. A (2010)), and they mentioned the dissolution of copper into copper ions, which is given by this equation:
$\mathrm{Cu_2O(s)}+2h^+\rightarrow2\mathrm{Cu^+(aq)}+1/2\mathrm{O_2}$
I am wondering whether it is possible to calculate the free energy of this reaction using qua... |
How to calculate reaction energies from quantum mechanics? |
I have read that sulphur dioxide acts as both Lewis base (due to presence of lone pair over S and/or O) and Lewis acid (due to presence of vacant d orbital). I found many examples of SO2 acting as a Lewis acid (towards NMe3, H2O, etc) but could not find any for its Lewis base behaviour. Could someone provide some react... |
SO2 acts as both Lewis acid and Lewis base. Can someone please provide examples of its Lewis base nature? |
The question is as follows:
> What What is the maximum number of electrons that can be found in an atom its last electron has the following quantum numbers: $n=4, m_{l}=+3$
Since $m_{l}=+3$ I know that $l=3$ and then I wrote them all:
$$1s^2, 2s^2, 2p^6, 3s^2, 3p^6, 4s^2, 3d^{10}, 4p^6, 5s^2, 4d^{10}, 5p^6, 6s^2, ... |
What is the maximum number of electrons that can be found in an atom its last electron has the following quantum numbers? |
Le Chatelier formulated his principle in 1884; it predicts the direction in which equilibrium is re-established after disturbed by an external cause. How does this qualitative principle relate to the known quantitative changes that occur when an equilibrium is disturbed by a change in temperature, concentration or pres... |
How does LeChatelier’s principle (which makes qualitative predictions) relate to the quantitative changes observed when an equilibrium is disturbed? |
The question is as follows:
> What What is the maximum number of electrons that can be found in an atom its last electron has the following quantum numbers: $n=4, m_{l}=+3$
Since $m_{l}=+3$ I know that $l=3$ and then I wrote them all:
$$1s^2, 2s^2, 2p^6, 3s^2, 3p^6, 4s^2, 3d^{10}, 4p^6, 5s^2, 4d^{10}, 5p^6, 6s^2, ... |
Le Chatelier formulated his principle in 1884; it predicts the direction in which equilibrium is re-established after it has been disturbed by an external cause. How does this qualitative principle relate to the known quantitative changes that occur when an equilibrium is disturbed by a change in temperature, concentra... |
I have read that sulfur dioxide acts as both Lewis base (due to presence of lone pair over $\ce{S}$ and/or $\ce{O})$ and Lewis acid (due to presence of vacant d orbital). I found many examples of $\ce{SO2}$ acting as a Lewis acid (towards $\ce{NMe3},$ $\ce{H2O},$ etc.), but could not find any for its Lewis base behavio... |
According to my book the answer is given that structure III is the most stable because all the atoms have complete octets.
But I think it should be II because of,
(a) Structure III has positive charge on a highly electronegative atom and
(b) In structure II, the positive charge can be stabilized by the Indicu... |
> How does this qualitative principle relate to the known quantitative changes that occur when an equilibrium is disturbed by a change in temperature, concentration or pressure?
**Equilibrium constant K and reaction quotient Q**
One way to quantitatively describe equilibrium processes is to define an equilibrium ... |
During a reaction I use sodium hydroxide and create sodium silicate as a by-product.
I am curious **if there is a way to recycle that sodium silicate into sodium hydroxide**?
I am not a chemist, just have to use chemistry and I love it.
My best guess is to use Hydrogen Peroxide and Heat.
or Hydrogen gas.
... |
I watch a YouTube channel by Alec Steele where a lot of metal forging is done. From this I know that varying the carbon content in steel drastically alters the physical properties of the metal, as does different heating cycles (time for cooling and temperature of the forge). I am interested what is happening at the ato... |
How do carbon content and various heat treatment cycles affect the properties of steel at the micro-level? |
Borax is used as "flux" during metal forging to help stick two pieces of steel together. I am curious what is happening at the atomic level. How does the addition of borax promote Fe-Fe bond formation? |
How does sodium borate (Borax) function to promote Fe-Fe bonding? |
There are really two parts to your question - one is to interpret the wikipedia entry, the other is the more general question about the transition of methane from the parent molecule to the ionized $\ce{CH4+}$.
For the first question, I believe the author has muddled the explanation a bit (though it's of course j... |
does anyone know where I could purchase zinc ink? Sigma Aldrich only sell Zinc Oxide, and I'm struggling to find a method in which I could remove the oxide after I print onto a polymer substrate.
Would be grateful if anyone could point me in the right direction. Thanks. |
You're supposed to recognize that oxygen which has more valence electrons than carbon can take on the positive charge without giving up its octet, thus favoring Structure III.
Now, is it _really_ true that the oxygen atom has more positive charge than the formally positive carbons in the other two structures, when o... |
I was reading a paper (Phil. Trans. R. Soc. A (2010) 368, 3379), and they mentioned the dissolution of copper into copper ions, which is given by this equation (2.4):
$\mathrm{Cu_2O(s)}+2h^+\rightarrow \mathrm{Cu^+(aq)}+1/2\mathrm{O_2}$
I am wondering whether it is possible to calculate the free energy of this re... |
How to calculate reaction energies from quantum chemistry? |
I was reading a paper by Catlow et al. \[[1](https://doi.org/10.1098/rsta.2010.0111)\], and they mentioned the dissolution of copper into copper ions, which is given by this equation:
> $$\ce{Cu2O(s) + 2 h+ <=> Cu+(aq) + 1/2 O2(g)} \tag{2.5}$$
where $\ce{h+}$ is a hole.
I am wondering whether it is possible t... |
What about $\ce{NiCl2(dppe)}$ makes it a more efficient catalyst for Suzuki cross-coupling as opposed to $\ce{NiCl2(PPh3)2}$ or $\ce{NiCl2(PCy3)2}$? How does the dppe ligand increase the reactivity of the catalyst?
**Literature claims:**
The experiment I am following is from *J. Chem. Educ.* **2017**, *94(6)*, 78... |
Wikipedia, in the article on Orbital Hybridisation, states the following:
> One misconception concerning orbital hybridisation is that it incorrectly predicts the ultraviolet photoelectron spectra of many molecules. While this is true if Koopmans' theorem is applied to localised hybrids, **quantum mechanics requires... |
> How does this qualitative principle relate to the known quantitative changes that occur when an equilibrium is disturbed by a change in temperature, concentration or pressure?
**Equilibrium constant K and reaction quotient Q**
One way to quantitatively describe equilibrium processes is to define an equilibrium ... |
You are correct; electrons and muons are fermions with different quantum numbers (specifically, they differ in [the electron number and the muon number](https://en.wikipedia.org/wiki/Flavour_(particle_physics)#Leptons)), so the Pauli exclusion principle does not apply between them (though it of course applies among ele... |
There are really two parts to your question - one is to interpret the wikipedia entry, the other is the more general question about the transition of methane from the parent molecule to the ionized $\ce{CH4+}$.
For the first question, I believe the author has muddled the explanation a bit (though it's of course jus... |
You are correct; electrons and muons are fermions with different quantum numbers (specifically, they differ in [the electron number and the muon number](https://en.wikipedia.org/wiki/Flavour_(particle_physics)#Leptons)), so the Pauli exclusion principle does not apply between them (though it of course applies among ele... |
Is bonding specifically for and between electrons? Why cant two atoms share muons, which are different particles of same charge, spin and different mass?
Why there aren't muon-electron bonds?
Why is the octet (or eighteen valence electron) rule only for electrons, and not for all particles with similar charge and... |
How do molecules with muons and electrons bond? |
You are correct; electrons and muons are fermions with different quantum numbers (specifically, they differ in [the electron number and the muon number](https://en.wikipedia.org/wiki/Flavour_(particle_physics)#Leptons)), so the Pauli exclusion principle does not apply between them (though it of course applies among ele... |
The question is as follows:
> What is the maximum number of electrons that can be found in an atom when its last electron has the following quantum numbers: $n=4, m_{l}=+3$
Since $m_{l}=+3$ I know that $l=3$ and then I wrote them all:
$$1s^2, 2s^2, 2p^6, 3s^2, 3p^6, 4s^2, 3d^{10}, 4p^6, 5s^2, 4d^{10}, 5p^6, 6s^2, ... |
What is the maximum number of electrons that can be found in an atom when its last electron has the following quantum numbers? |
Why does C3H6 gas when compressed (in a centrifugal compressor) comes out with a pressure of 16 bar and 90 degrees celsius and when it is a mixture of C3H6 liquid/gas stored inside of a vessel reaches also the 16 bar but at a lower temperature of around 38 degrees celsius?
|
Why is so different the temperatures of a compressed gas compared to a liquid/gas mixture of the same fluid and they are both at the same pressure? |
You are correct; electrons and muons are fermions with different quantum numbers (specifically, they differ in [the electron number and the muon number](https://en.wikipedia.org/wiki/Flavour_(particle_physics)#Leptons)), so the Pauli exclusion principle does not apply between them (though it of course applies among ele... |
Reaction energies of solids from quantum chemistry? |
Here are the electron configurations of the relevant elements:
[![enter image description here][1]][1]
Source: https://chemistrytheperiodictable.files.wordpress.com/2017/11/electronic-config-lanthanides.png?w=474&h=399
The first $f$ electrons get filled in the 6th period of the table of elements. First, the $6... |
[van 't Hoff equation][1]
> $$\frac{\mathrm d}{\mathrm dT} \ln K_\mathrm{eq} = \frac{\Delta H^⦵}{RT^2}$$
= [Le Chatelier's principle][2] in a particular context of temperature and chemical reaction equilibrium.
What the Le Chatelier's principle says qualitatively as a general principle, the van 't Hoff equa... |
[van 't Hoff equation][1]
> $$\frac{\mathrm d}{\mathrm dT} \ln K_\mathrm{eq} = \frac{\Delta H^⦵}{RT^2}$$
= [Le Chatelier's principle][2] in a particular context of temperature and chemical reaction equilibrium.
What the Le Chatelier's principle says qualitatively as a general principle, the van 't Hoff equa... |
[![Structural data of sulphur dioxide][1]][1]
**Figure 1:** Structural data of $\ce{SO2}$. Taken from [Wikimedia][2], where a full list of authors is available.
As can be seen from the structural data, the bond angle of $\ce{SO2}$ is almost precisely $120°$, meaning that the σ-orbitals can be described as a... |
Why is the bond angle of sulphur dioxide close to 120°, not 90°? |
If I understood correctly , having a protic solvent increases chance of E1 mechanism but I can not rationalize this because carbocation intermediate is a positively charged molecule and by surrounding that with a lot more positive protons will make the whole system in an unstable state. Hence it should make it less lik... |
[![enter image description here][1]][1]
From these two molecules in question, (C) should be more unstable as it is in a cis-configuration. The t-butyl and methyl groups being on the same side of the ring would exert a larger steric force on each other as compared to the trans configuration. However, (D) is mentioned... |
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