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I have recently been reading about graph Laplacians and apparently there is a specific type of graph Laplacian that comes from quantum chemistry and Huckel theory. This however, is said to be only applicable for conjugated hydrocarbons. I have been working with QM9 dataset and I was wondering if QM9 pass the filter (be... |
I have recently been reading about graph Laplacians and apparently there is a specific type of graph Laplacian that comes from quantum chemistry and Huckel theory. This however, is said to be only applicable for conjugated hydrocarbons. I have been working with QM9 dataset and I was wondering if QM9 passes the filter (... |
Fluorine gas definitely supports flaming combustion. And does so more than oxygen. Very dramatic, actually. Chlorine, less so than oxygen or air, but still possible in right setting.
See below for examples of fluorine flames. Examples are not in 100% F2 environment, but should be obvious that F2 makes more flame... |
Fluorine gas definitely supports flaming combustion. And does so more than oxygen. Very dramatic, actually. Chlorine, less so than oxygen or air, but still possible in right setting.
See below for examples of fluorine flames. Examples are not in 100% F2 environment, but should be obvious that F2 makes more flame... |
When an electron ($e^-$) is added to $\ce{Cl}$ ,i.e.,
$$\ce{Cl + e^- -> Cl^- + ∆_{gh}E}$$
We can see that energy is released. My question is where is this energy coming from? What happens within the atom such that it loses energy and releases it to the surrounding? |
Fluorine gas definitely supports flaming combustion. And does so more than oxygen. Very dramatic, actually. Chlorine, less so than oxygen or air, but still possible in right setting.
See below for examples of fluorine flames. Examples are not in $100~\%\ \ce{F2}$ environment, but should be obvious that $\ce{F2}$... |
When an electron ($e^-$) is added to $\ce{Cl}$ ,i.e.,
$$\ce{Cl + e^- -> Cl^- + ∆_{gh}H}$$
We can see that energy is released. My question is where is this energy coming from? What happens within the atom such that it loses energy and releases it to the surrounding? |
I have recently been reading about graph Laplacians and apparently there is a specific type of graph Laplacian that comes from quantum chemistry and Hückel theory.
This, however, is said to be only applicable for conjugated hydrocarbons. I have been working with QM9 dataset and I was wondering if QM9 passes the filt... |
I've managed to get myself thoroughly confused in thinking about the vapor pressure of a substance at a particular temperature $T$, and how it relates to the pressure of the substance if it is in a phase equilibrium at that same temperature $T$.
Consider two sealed, rigid containers. All three containers are in the... |
I want to do some EPR tests with 5-DSA (or related spin probe) dissolved into different crude oils.
It had not sunk into me that $100 of 5-DSA was a tiny amount of a very sticky solid. It's proving hard to deploy in each test. Better would be if I could dissolve my 5-DSA into, say, known volume of toluene and then p... |
Handling EPR spin-probes, specifically how to dissolve 5-DSA? |
Firstly, **Why doesn't Diels-Alder reaction happen here?**
On first sight the reaction seem completely feasible as both the diene and the dienophile are good species that could undergo Diels-Alder, but **no**. It could be proven by just analyzing the products (the actual one and the expected one).
- **Resonance*... |
Firstly, **Why doesn't Diels-Alder reaction happen here?**
On first sight the reaction seem completely feasible as both the diene and the dienophile are good species that could undergo Diels-Alder, but **no**. It could be proven by just analyzing the products (the actual one and the expected one).
- **Resonance*... |
I want to do some EPR tests with 5-DSA (or related spin probe) dissolved into different crude oils.
It had not sunk into me that $100 of 5-DSA was a tiny amount of a very sticky solid. It's proving hard to deploy in each test. Better would be if I could dissolve my 5-DSA into, say, known volume of toluene and then p... |
I'm having trouble understanding which hydrogens are magnetically distinct in the following molecule (lactupicrinal):
[![lactupicrinal][1]][1]
[1]: https://i.stack.imgur.com/Hm96N.png
I've counted all the hydrogens (there are 18) and I know that hydrogens in a methyl group are all chemically the same (I t... |
I'm having trouble understanding which hydrogens are magnetically distinct in the following molecule (lactupicrinal):
[![lactupicrinal][1]][1]
[1]: https://i.stack.imgur.com/Hm96N.png
I've counted all the hydrogens (there are 20) and I know that hydrogens in a methyl group are all chemically the same (I t... |
Recently in Chemistry 101 we learned about $M_1V_1=M_2V_2$, where $M$ is the molarity of the two mixtures and $V$ is their respective volumes.
The first thing that popped into my mind when I saw this formula is, “Hey, that reminds me of Boyle’s Law from high school physics - $P_1V_1=P_2V_2$ - the relationship between... |
Is there a connection between M1V1=M2V2 and Boyle’s Law? |
Why is $K_c$ not affected by change in pressure? I know the mathematical explanation, but I don't really understand the reason when only looking at $K_c$. The explanation I know is with the reference to $K_p$, but is it possible to explain without $K_p$? |
I want to ask a question about the fragment orbitals of the $\ce{B2H6}$ system, specifically when I combine the $\ce{B2H4}$ with the $\ce{H2}$ fragments.
I am halfway through my inorganic chemistry molecular orbitals course and today we were discussing the application of MO theory in figuring out the structure of $... |
> Which of the following must be true for adiabatic processes?
> - $C_V = C_p$
- $\Delta H = 0$
- $\Delta U = 0$
- $\Delta S = 0$
- $q = 0$
(Source: Chemistry GRE)
The answer is $q = 0$. From what I can find, an adiabatic process is when there is no transfer of heat, but then why is the enthalpy change no... |
I'm looking for examples of [*akamptisomerism*][1]<sup>\[1\]</sup>.
I'm try to find simple molecules able to (theoretically) show this kind of isomerism.
I thought about the isomers of [(2<em>R</em>)-2-methyl-9-oxabicyclo\[3.3.1\]nonane][2].
Considering only the $\ce{(HC)O(CH)}$ group, I found the eight akamptisomer... |
How to apply the $parvo/amplo$ akamptisomeric stereodescriptors to this bicyclic system? |
For the SN2 reaction between chloroacetone and iodide, my professor has drawn a donor-acceptor interaction between the iodine lone pair attacking the Cl-substituted carbon and the pi antibonding C-O orbital of the molecule.
If SN2 requires overlap between the sigma* C-Cl orbital and the nucleophilic lone pair of I ... |
Stabilizing donor-acceptor interaction between orthogonal orbitals in the SN2 transition state? |
[![(1)][1]][1]
[![(2)][2]][2]
[1]: https://i.stack.imgur.com/z9Ngd.png
[2]: https://i.stack.imgur.com/LRI7I.png
Which of the following carbocations is more stable? I know two major factors in determining carbocation stability is resonance and the number of carbon atoms neighboring the positive carbon. Does th... |
Which of the following carbocations is more stable? |
Ah but iron (III) [does act as a catalyst in peroxide decomposition.](https://www.bing.com/videos/search?q=peroxide+decomposition+iron&view=detail&mid=9BDAF88B5F949441BDC29BDAF88B5F949441BDC2&FORM=VIRE)
It can be improved by the addition of some copper.
Some hydrogen peroxide is mixed with inhibitors (radic... |
In *Concise Inorganic Chemistry* by J.D.Lee (Adapted by Sudarsan Guha, Fourth Edition), on page 75, under the topic "Effect of Electronegativity - When the surrounding atom is same with different central atom having lone pair" it is given:
> The effect of electronegativity as postulated in VSEPR theory explains the ... |
In *Concise Inorganic Chemistry* by J.D.Lee (Adapted by Sudarsan Guha, Fourth Edition), on page 75, under the topic "Effect of Electronegativity - When the surrounding atom is same with different central atom having lone pair" it is given:
> The effect of electronegativity as postulated in VSEPR theory explains the ... |
Upon application of a weak magnetic field, a line in the microwave absorption spectrum of rigid rotor splits into 3 lines. The quantum number (J) of the rotational energy level from which the transition originates is
(a) 0
(b) 1
(c) 2
(d) 3
Can anyone explain the answer (a) for this?
For rotational levels, ea... |
What is the effect of applied magnetic field on absorption spectrum? |
> Upon application of a weak magnetic field, a line in the microwave absorption spectrum of rigid rotor splits into $3$ lines. The quantum number $(J)$ of the rotational energy level from which the transition originates is
> (**a**) $0$
> (**b**) $1$
> (**c**) $2$
> (**d**) $3$
Can anyone explain the ans... |
I've been working on a project involving the catalyst iron(III) oxide for decomposing hydrogen peroxide.
It barely seemed to produce any oxygen.
[This YouTube video](https://youtu.be/Ta4DomSDzF8) also seems to suggest that iron(III) oxide isn't a very effective catalyst.
But why? |
Why isn't iron(III) oxide an effective catalyst for decomposing hydrogen peroxide? |
Firstly, **Why doesn't Diels-Alder reaction happen here?**
On first sight the reaction seem completely feasible as both the diene and the dienophile are good species that could undergo Diels-Alder, but **no**. It could be proven by just analyzing the products (the actual one and the expected one).
- **Resonance*... |
> why is the enthalpy change not zero?
When only PV work is possible, and pressure is constant, we can write
$$q_p = \Delta H \tag{1}$$
that is, the enthalpy change *at constant pressure* is equal to the heat exchanged. If the pressure is *not* constant all bets are off and you should resort to some other expr... |
I spent yesterday evening looking for data on magnetic oxides. What is easily available isn't well organized, so I ask here in hope someone can remember.
I'm looking for a magnetic oxide (that is, an oxide that can be held in place by neodymium magnet in presence of liquid flow) that has magnetic properties at 350 C... |
Is there any reasonably inert magnetic oxide? |
I spent yesterday evening looking for data on magnetic oxides. What is easily available isn't well organized, so I ask here in hope someone can remember.
I'm looking for a magnetic oxide (that is, an oxide that can be held in place by neodymium magnet in presence of liquid flow) that has magnetic properties at 350 C... |
NaCl is dissolved in water. Ions sodium and chloride are sufficiently free from each other so that they may occupy different regions of the solution after an active transport process through a membrane, or a mere electric field is in place.
They still act upon each other, and a membrane voltage is set by oppositely ... |
What is the interaction between dissolved ions of opposite valence in a solution at rest? |
I spent yesterday evening looking for data on magnetic oxides. What is easily available isn't well organized, so I ask here in hope someone can remember.
I'm looking for a magnetic oxide (that is, an oxide that can be held in place by neodymium magnet in presence of liquid flow) that has magnetic properties at 350 C... |
We're told in chemistry class that the order of bond length is:
triple < double < single
Can anyone explain WHY this is the case? Is it because multiple bonds involve stronger attraction between the two atoms or something else? |
Why are double bonds shorter than single bonds? |
I give you a case. Suppose you opened an airtight jar containing an ideal gas. Suppose by some mysterious power, you are able to observe the molecules of the gas. What do you think you'll see on opening the jar?
Obviously you'll see the molecules dissipating in space(the correct word would be diffusing). Initially the... |
I am a computer science grad and I am working to write an electronic structure calculation program and I am stuck at forming basis functions using 6-31G Basis set for atoms having higher atomic numbers (p,d,f shells).
For example, consider a gaussian g as
g(alpha) = (2*alpha/pi)^(3/4) * exp(-alpha*r^2).
Lo... |
I spent yesterday evening looking for data on magnetic oxides. What is easily available isn't well organized, so I ask here in hope someone can remember.
I'm looking for a magnetic oxide (that is, an oxide that can be held in place by neodymium magnet in presence of liquid flow) that has magnetic properties at 350 C... |
For the $\mathrm{S_N2}$ reaction between chloroacetone and iodide, my professor has drawn a donor-acceptor interaction between the iodine lone pair attacking the Cl-substituted carbon and the π antibonding $\ce{C-O}$ orbital of the molecule.
If $\mathrm{S_N2}$ requires overlap between the σ* $\ce{C-Cl}$ or... |
ZnO is exposed to pure CO at 1300K and the equillibrium ZnO(s) + CO(g) --> Zn(g) + CO2(g) is then established at 1 atm pressure. The density of the gas mixture is 0.344g/L at the same temperature. Calculate the partial pressure of CO(g) at equillibrium (at. Wt. of Zn=65.4).
My attempt:. Since at equilibrium, Moles of ... |
ZnO is exposed to pure CO at 1300K and the equilibrium ZnO(s) + CO(g) --> Zn(g) + CO2(g) is then established at 1 atm pressure. The density of the gas mixture is 0.344g/L at the same temperature. Calculate the partial pressure of CO(g) at equilibrium (at. Wt. of Zn=65.4).
My attempt:
Since at equilibrium, Moles of ... |
ZnO is exposed to pure CO at $\pu{1300K}$ and the equilibrium $\ce{ZnO(s) + CO(g) -> Zn(g) + CO2(g)}$ is then established at $\pu{1 atm}$ pressure. The density of the gas mixture is $\pu{0.344g/L}$ at the same temperature. Calculate the partial pressure of $\ce{CO(g)}$ at equilibrium (at. Wt. of $\ce{Zn}=65.4$).
My ... |
$\ce{ZnO}$ is exposed to pure $\ce{CO}$ at $\pu{1300K}$ and the equilibrium $\ce{ZnO(s) + CO(g) -> Zn(g) + CO2(g)}$ is then established at $\pu{1 atm}$ pressure. The density of the gas mixture is $\pu{0.344g/L}$ at the same temperature. Calculate the partial pressure of $\ce{CO(g)}$ at equilibrium (atomic Weight of $\c... |
$\ce{ZnO}$ is exposed to pure $\ce{CO}$ at $\pu{1300K}$ and the equilibrium $$\ce{ZnO(s) + CO(g) <=> Zn(g) + CO2(g)}$$ is then established at $\pu{1 atm}$ pressure. The density of the gas mixture is $\pu{0.344g/L}$ at the same temperature. Calculate the partial pressure of $\ce{CO(g)}$ at equilibrium (atomic Weight of ... |
So, we just finished an AP chem lab where the question was basically:
>Given the results of the lab were that $\pu{5 grams}$ of $\ce{CaCl2}$ and $\pu{45ml}$ of water produced a $\pu{13.33 ^\circ C}$ change, find the new temperature change of $\pu{10 grams}$ of $\ce{CaCl2}$ in $\pu{40ml}$ of water.
Our teacher us... |
In today’s reaction seminar, the [Wharton transposition][1] made an appearance. In our practice case it started from the epoxide as in scheme 1 below as on Wikipedia; Kürti/Czakó (page 482) begin from the enone which is oxidised by hydrogen peroxide to give the same epoxide.
[![General mechanism of the Wharton react... |
In today’s reaction seminar, the [Wharton transposition][1] made an appearance. In our practice case it started from the epoxide as in scheme 1 below as on Wikipedia; Kürti/Czakó (page 482) begin from the enone which is oxidised by hydrogen peroxide to give the same epoxide.
[![General mechanism of the Wharton react... |
The Wharton rearrangement presents an opportunity to convert one α,β-unsaturated ketone to its regioisomeric allylic alcohol. To this end Ohloff, et al.,<sup>1,2</sup> explored the transformation of α-ionone **1** into α-damascone **2**. Epoxide **3** was exposed to hydrazine in methanol to affor... |
Which of the following statements is true? |
Classic/killer/easy application for the deuterium kinetic isotope effect? |
> Which of the following statements is true?
> (a) An ideal gas always obeys the equation: $PV^γ = \mathrm{constant}$ in adiabatic process.
> (b) An ideal gas always obeys the equation: $PV^x = \mathrm{constant}$ in
polytropic process.
> (c) In a polytropic process, the heat capacity of the system remain... |
> Which of the following statements is true?
> (a) An ideal gas always obeys the equation: $PV^γ = \mathrm{constant}$ in adiabatic process.
> (b) An ideal gas always obeys the equation: $PV^x = \mathrm{constant}$ in
polytropic process.
> (c) In a polytropic process, the heat capacity of the system remain... |
> Which of the following statements is true?
> (a) An ideal gas always obeys the equation: $PV^γ = \mathrm{constant}$ in adiabatic process.
> (b) An ideal gas always obeys the equation: $PV^x = \mathrm{constant}$ in
polytropic process.
> (c) In a polytropic process, the heat capacity of the system remain... |
> Which of the following statements is true?
> (a) An ideal gas always obeys the equation: $PV^γ = \mathrm{constant}$ in adiabatic process.
> (b) An ideal gas always obeys the equation: $PV^x = \mathrm{constant}$ in
polytropic process.
> (c) In a polytropic process, the heat capacity of the system remain... |
In atkins' physcal chemistry, the criteria for spontaneity using gibbs energy was calculated using the clausius inequality:
ds >= dq/T, and at constant pressure, dq=dH. Thus, dH-Tds is negative.
so if we define a function , G= H-Ts, at constant pressure and temperature, we get dG =dh-Tds <=0, which we use as a cr... |
Question 13 from \[1, p. 4.2\]:
> Which of the following statements is true?
> (a) An ideal gas always obeys the equation: $PV^γ = \mathrm{constant}$ in adiabatic process.
> (b) An ideal gas always obeys the equation: $PV^x = \mathrm{constant}$ in
polytropic process.
> (c) In a polytropic process, the... |
In Atkins' *Physical Chemistry* the criteria for spontaneity using Gibbs energy was calculated using the Clausius inequality:
$$\mathrm dS ≥ \frac{\mathrm dq}{T},$$
and at constant pressure, $\mathrm dq = \mathrm dH.$ Thus, $\mathrm dH - T\,\mathrm dS$ is negative.
So, if we define a function $G = H - TS$ at c... |
> Which of the following carbocations is more stable?
> [![1: 1‐phenylbut‐3‐en‐1‐ylium; 2: 1‐phenylethylium][1]][1]
I know two major factors in determining carbocation stability: resonance and the number of carbon atoms neighboring the positive carbon. Does the double bond in the substituent of the first molecul... |
The other answers provide valuable insight into what actually happens and are very helpful in understanding the chemistry behind it.
But to correctly answer the question, a much more basic understanding of chemistry (and how tests work) would suffice.
Let's look at what is given in the Question:
> Nickel sulfa... |
Question 3: https://imgur.com/a/be9pwrR
It said m/z = 122, and m/z = 124 is in a 3:1 ratio, so I figured that meant that Chlorine is present. Then I thought m/z was the actual compound's molecular mass.
So I used the rule of 13, and did:
Chlorine's molar mass = 35
122 - 35 = 87
Using the rule of 13
87... |
How do I figure out how many hydrogens my compound actually has using a mass and NMR spectrum? |
> $\ce{ZnO}$ is exposed to pure $\ce{CO}$ at $\pu{1300 K}$ and the equilibrium
> $$\ce{ZnO(s) + CO(g) <=> Zn(g) + CO2(g)}$$
> is then established at $\pu{1 atm}$ pressure. The density of the gas mixture is $\pu{0.344 g L-1}$ at the same temperature. Calculate the partial pressure of $\ce{CO(g)}$ at equilibrium (at... |
Being an NMR fan myself I would inspect that spectrum:
[![enter image description here][1]][1]
The integrals suggest you have 11 $\ce{^1H}$ or a multiple thereof (the number under each peak is the normalized integral, which is proportional to the number of protons represented by the multiplet). That leaves you w... |
Being an NMR fan myself I would inspect that NMR spectrum:
[![enter image description here][1]][1]
The integrals suggest you have 11 $\ce{^1H}$ or a multiple thereof (the number under each peak is the normalized integral, which is proportional to the number of protons represented by the multiplet). That leaves y... |
Question 3:
> [![enter image description here][1]][1]
It said $m/z = 122,$ and $m/z = 124$ is in a $3:1$ ratio, so I figured that meant that chlorine is present. Then I thought $m/z$ was the actual compound's molecular mass.
So I used the rule of 13, and did:
Chlorine's molar mass = 35
122 - 35 = 87
U... |
Being an NMR fan myself I would inspect that NMR spectrum:
[![enter image description here][1]][1]
The integrals suggest you have 11 $\ce{^1H}$ or a multiple thereof (the number under each peak is the normalized integral, which is proportional to the number of protons represented by the multiplet). That leaves y... |
I am studying gas-phase Uv-Vis spectra of radical molecules. If one electron is removed/captured from the neutral even electron molecule, what can I expect from the absorption spectra? Will new peaks appear? Will they be blue/red-shifted? |
UV-Vis absorbtion spectra of a radical cation/anion. Is it different compared to its even counterpart? |
I would probably also use the method Buck has suggested, but let’s say the NMR broke down or somebody is measuring a $\ce{^13C}$ of $\pu{2.5mg}$ meaning it will be blocked until tomorrow; in this case, we can still extract more information from the mass spectrum.
In addition to the molecule peak at 122, you have:
... |
I'm brawsing alibaba for Calcium copper titanate oxide and I find it varity of colors.
What is the right color for CCTO?
https://www.alibaba.com/trade/search?fsb=y&IndexArea=product_en&CatId=&SearchText=Calcium+copper+titanate
|
In my country (Brazil), sucralose comes in this two forms, liquid and powder.
Looking on the nutritional table, liquid sucralose have no significant amount of carbohydrates or kcal; On the powder sucralose says that have about 4kcal/g and about ~1g of carbohydrates(Basically equal to sugar) per g of serving.
**T... |
I'm brawsing alibaba for Calcium copper titanate oxide and I find it varity of colors.
What is the right color for CCTO?
Is it pure brown, pale brown, redish brown or grayish dark brown?
[![enter image description here][1]][1]
[![enter image description here][2]][2]
[![enter image description here][3... |
I'm brawsing alibaba for Calcium copper titanate oxide and I find it varity of colors.
What is the right color for CCTO?
Is it pure brown, pale brown, redish brown or grayish dark brown?
All of these below are sold as CCTO on alibaba. Can it be that they have different color but are equaly valid products?
[!... |
I'm browsing Alibaba for calcium copper titanium oxide $\ce{CaCu3Ti4O12}$ (CCTO) and I find it variety of colors: pure brown, pale brown, reddish brown or grayish dark brown. [Wikipedia](https://en.wikipedia.org/wiki/Calcium_copper_titanate) does not tell the right color either.
What is the right color for CCTO?
... |
What is the right color of calcium copper titanate? |
The Wharton rearrangement presents an opportunity to convert one α,β-unsaturated ketone to its regioisomeric allylic alcohol. To this end Ohloff, et al.,<sup>1,2</sup> explored the transformation of α-ionone **1** into α-damascone **2**. Epoxide **3** was exposed to hydrazine in methanol to affor... |
I'm trying to do some tests using graph Laplacians based on Hückel theory. This, however, is said to be only applicable for conjugated hydrocarbons. My questions are:
1. I have been working with QM9 dataset and I was wondering if QM9 passes the filter (being consist of conjugated hydrocarbons only). How about ZINC d... |
Your question is how does the inequality $|\mathrm dW_\mathrm{reversible}| > |\mathrm dW_\mathrm{irreversible}|$ follow from more general statements of the Second Law (a "corollary" being the Clausius inequality). Or, how is that inequality a definition of spontaneity?
There are various established formulations ... |
Anhydrous magnesium sulfate to replace epsom salt? |
Terpin has 2 sp3 Carbons with different substituents on a cycloalkane, so it has 2 cis-trans isomers, from what I was taught, is a stereoisomer.
The way I was taught to find stereoisomers, was to count the number of double bonds that can be E/Z and the stereocentres, and do 2^n. There is no stereocentres, and no dou... |
Terpin has two $\mathrm{sp^3}$ carbons with different substituents on a cycloalkane, so it has two *cis*-/*trans*-isomers, and from what I was taught, is a stereoisomer.
[![Terpin][1]][1]
The way I was taught to find stereoisomers was to count the number of double bonds that can be *E*/*Z* and the stereocentres, ... |
I'm currently doing an IB chemistry individual investigation on the effect of adding bleach to water on the water's dissolved oxygen content. I've used Winkler's method for this and I'm just wondering whether it is possible to do Winkler's method without the presence of iodide ions(I-)? (IE: without adding chemicals li... |
In *Concise Inorganic Chemistry* by J.D.Lee (Adapted by Sudarsan Guha, Fourth Edition), on page 75, under the topic "Effect of Electronegativity - When the surrounding atom is same with different central atom having lone pair" it is given:
> The effect of electronegativity as postulated in VSEPR theory explains the ... |
The equilibrium for this reaction is on the left side.
Why is this? I thought since the sulphur in molecule X has bigger p-orbitals than the oxygen in molecule Z, resonance would be a less important factor for stabilization, meaning Z is more stable, and the equili... |
I know that the Lewis structure of hydrazine contains sp3 hybridized nitrogen atom but on analyzing it's structure I realized there are many bond pair and lone pair repulsions. Instead of a single bond between the n atoms they could also have a double bond and a dative bond with h atoms. When I asked my professor about... |
Why does hydrazine doesn't contain a double bond between two n atoms? |
I know that the Lewis structure of hydrazine contains $\mathrm{sp^3}$ hybridized nitrogen atom but on analyzing it's structure I realized there are many bond pair and lone pair repulsions. Instead of a single bond between the N atoms they could also have a double bond and a dative bond with h atoms.
When I asked my ... |
Why doesn't hydrazine contain a double bond between two nitrogen atoms? |
Terpin (4-(2-hydroxypropan-2-yl)-1-methylcyclohexan-1-ol) has two $\mathrm{sp^3}$ carbons with different substituents on a cycloalkane, so it has two *cis*-/*trans*-isomers, and from what I was taught, is a stereoisomer.
[![Terpin][1]][1]
The way I was taught to find stereoisomers was to count the number of doubl... |
> Compare the basicity of the following compounds:
> [![I: cyclohexylamine; II: piperidine; III: morpholine][1]][1]
### Comparing compounds **I** and **II**
Since there is no conjugated system, there is no resonance at play and we only have to discuss hyperconjucation and inductive effect.
The conjugate ... |
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