Answered: [1,3] Sigmatropic migrations of…

[1,3] Sigmatropic migrations of hydrogen cannot occur under thermal conditions, but [1,3] sigmatropic migrations of carbon can occur under thermal conditions. Explain!

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter7: Atomic Structure And Periodicity

Section: Chapter Questions

Problem 35Q: Does the minimization of electron-electron repulsions correlate with Hund's rule?

See similar textbooks

Related questions

Q: A system of N particles with K number of holonomic constraints, the degree of freedom? O N-K O 3N -…

A: For a particle there are 3 degrees of freedom . And holonomic constraints are relations between the…

Q: The bond dissociation energy of a typical C-F bond in a chlorofluorocarbon is approximately 440 kJ…

Q: 4.2 Indicate the order of each of the sigmatropic shifts shown in the equations below. (b) Indicate…

A: Molecular rearrangements in which a σ-bonded atom or group, flanked by one or more π-electron…

Q: What are the possible electronic excitations in the below compounds? (i) (ii) (iii) (iv) Provide the…

Q: Calculate the number of elements of unsaturation implied by the molecularformula C6H12

A: The formula to calculate the degree of unsaturation of elements of unsaturation is as follows:…

Q: how could you seperate the components of a mixture of caSO4 and Ca(NO3)2 and recover the two…

A: Given: A mixture of CaSO4 and Ca(NO3)2. Since the sulfates of calcium i.e. CaSO4 is insoluble in…

Q: 19 19 Using the information given below, calculate ASuniy for the following rxn at 298 K. 2 C,H2(g)…

A: ∆S(univ) = ∆S(system) + ∆S(surrounding).

Q: Determine the values of Kc that correspond to the following values of Kp. 1.)…

A: The relationship between Kc and Kp follows: Kp=Kc RT∆ng .....(1) where, Kp =…

Q: n determination of Chloride by the Mohr method, what equations do you use for this to get the %(w/w)…

A: chloride ion concentration can be determined in a solution by adding AgNO3 in the solution AgNO3 +…

Q: P31.9 What is the symmetry number for the following molecules? 35C137CI a. b. 3CI2 1602 с. d. C6H6…

A: symmetry number: it is the number of indistinguishable rotated positions. It has denoted by "σ".…

Q: Calculate the equilibrium constant for the dissociation of l2(g) at 500 K. The rotational constant…

A: When iodine molecule undergoes dissociation , it is effected both by rotational and vibrational…

Q: Use values of lmax from UV–visible spectra to estimate the length of conjugatedsystems, and to…

A: In UV spectra Woodward- Fieser rules are applied for the calculation of the maximum wavelength of…

Q: Suppose that three conformations are proposed for the nonlinear molecule H2O2 (1, 2 , and 3).The…

A: a) The total number of atoms in the molecule H2O2 is 4. The total number of vibrational modes of a…

Q: with amine concentration as shown below. A time-resolved laser spectroscopy experiment had also…

A: The shortening of the lifetime of the excited state is called quenching. Because the phosphorescence…

Q: Will thermal 1,3-migrations of carbon occur with retention or inversion of configuration?

A: Sigmatropic rearrangement reactions are name with digits. For example a [1, 3] sigmatropic…

Q: S. cerevisiae on ethanol is simply described by the folowing reaction CHOH + aO, DNH3 f CH, sANa1000…

Q: Determine the Ksp of the following reactions. a. NaC2H3O2 ⇄ Na+ + C2H3O2- b. HBr⇄H++Br c. Zn(OH)2 ⇄…

Q: Consider the following representation of charge interactions, all of which are in the same…

Q: Assuming standard valencies (C = 4, H = 1, N = 3, O = 2, and X = 1), a compound with molecular…

Q: Why is there a need to specify regioselectivity and stereospecificity when dealing with products…

Q: Which of the following(s) is/ are false ? 1- Nonradiative relaxation takes place during collisions…

A: ◆ Non- Radiative relaxationoccur takes place by the transfer of very small amounts of energy through…

Q: The coordinates of the atoms of an ethanoic acid dimer are set out in more detail as shown. Consider…

A: Ethanoic acid contains -OH group. This alcoholic group makes hydrogen bonding with the another…

Q: Calculate the pK at 25 degrees C of the following reaction using the data in the table. Use R =…

Q: on Calculate the ratio of the rotational partition functions of 35C1 35Cl to that of 35Cl 33 Cl…

Q: Determine the symmetry of the IR active modes for cyclohexane chair conformation

Q: 2- In circular dichroism, CD, a plot is made between: a) n-no and A b) Er-Eo and A c) and X d) n and…

A: The circular dichroism measures the difference in the absorbance between left and right circularly…

Q: A reaction has a delta H of -267kJ/Mol and a delta S of 355J/mol.K. what is delta G for the reaction…

A: We have ∆G to calculate. ∆H = 267kJ/Mol ∆S = 355J/mol.K T =298K

Q: Estimate the rotational partition function of ethene at 25 °C given that ᷉ A = 4.828 cm−1, ᷉ B…

A: Given data contains, Planck's constant (h) is 6.626×10-34J/s. Boltzmann constant (k) is…

Q: a. 1. LIAIH4 3. РСС 2. H3O* workup b. Br 1. Mg', Et,0 2. CO2 3. H3O* workup C. HO OMe OMe p-TSA…

A: Answer:

Q: How much energy is due to the additional steric strain of the 1,3-diaxial interaction?

A: Conformation - any one of the infinite number of possible spatial arrangements of atoms in a…

Q: P11E.2 Suppose that three conformations are proposed for the nonlinear molecule H,O, (1, 2, and 3).…

A: (a) The number of atoms present in linear molecule of H2O2 is four. For a linear molecule, the total…

Q: In the UV-visible spectrum of (E)l,3,5-hexatriene, the lowest energy spectrum corresponds to: Sigma…

A: The structure of (E)-1,3,5-hexatriene is shown below: In this compound sigma σ and pi π bonds are…

Q: Define the Hückel's Rule ?

A: The compounds containing carbon and hydrogen are termed as hydrocarbons. Hydrocarbons are classified…

Q: 10.3 At low temperatures a substituted 1,2-dichloroethane molecule can adopt the three conformations…

A: Here we have to determine mean dipole moment of the following conformational isomers of…

Q: The symmetry of the rotational modes of a molecule can be read directly from the character table.…

Q: Tungsten hexacarbonyl (W(CO)6) is reacted with (EtC≡N) and the product is W(CO)3(N≡CEt)3. However,…

A: determination of irreducible representations.

Q: 233 (13,000) calc: 237 245 (6,500) calc: 249 243 (1,400) calc: 249

Q: Write reasonable mechanisms for each of the following transformations and label any…

Q: Symmetry, Atomic and Molecular Spectroscopy, 11) Identify symmetry elements for 1,1-dichloroethene…

A: 1,1 dichloroethene:The point group is C2v.The symmetry elements present in the molecule are E, C2,…

Q: A míxterre composed of 25g Phenol and 30g re equitiriom at The fwo liqruit phases that seporrate nd…

A: To determine the saturation solubility of water in phenol at 30°C.

Q: Using the information given below, calculate ASv for the following rxn at 298 K. sys Al,O3(s) +…

A: "Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: Match the region of the electromanetic spectrum with the type of chemical spectroscopy

Q: Will thermal 1,5-migrations of carbon occur with retention or inversion of configuration?

A: Stereochemistry is a branch of chemistry that deals with the arrangement of atoms in the space…

Q: A sample of polyisoprene has one out of every 150 backbone carbon atoms crosslinked on the average.…

A: Interpretation- Determine the initial (unextended) modulus for rubber in (MPa) in the given sample…

Q: The UV spectrum of acetone shows two peaks of amax = 280 nm, e = 15 and 2max = 190 nm, e = 100.…

A: In UV spectrum, we consider four types electronic transitions. 1- σ→σ 2- π→π* 3- n →π* 4- n--->…

Concept explainers

Micelles and Biological Membrane

Micelles are the type of lipid molecules that organize themselves in spherical shape in aqueous solutions. The production of the micelle is a reply to the amphipathic behavior of fatty acids. It means that they consist of both hydrophobic regions and hydrophilic regions. In micelles, polar head groups (hydrophilic groups) produce an outer layer associated with water whereas nonpolar tails (hydrophobic groups) are organized in the interior.

Question

[1,3] Sigmatropic migrations of hydrogen cannot occur under thermal conditions, but [1,3] sigmatropic migrations of carbon can occur under thermal conditions. Explain!

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

(c) Would you expect 109AgF to have a rotational constant that is higher,lower, or equal to that of 107AgF? Explain your reasoning
9. Consider the ethyl iodide molecule, CH CH₂, which of the statements below is correct? (A) CH, protons are more deshielded. (B) The energy gap between a and ß spin states of CH₂ protons is smaller than the counterpart of CH; protons. (C) The electronegative element I shields the CH₂ protons. (D) None of the above.
There is some indication that other hydrogen ring compounds and ions in addition to H3 and D3 species may play a role in interstellar chemistry. According to J.S. Wright and G.A. DiLabio (J. Phys. Chem. 96, 10 793 (1992)), H5−, H6, and H7+ are particularly stable whereas H4 and H5+ are not. Confirm these statements by Hückel calculations.
What can you conclude given that the plot of ln P versus t islinear?
Give chemical reaction in support of the statement that all the bonds inPCl5 molecule are not equivalent.
Conventional magnetic resonance imaging (MRI) of the lungs is very challenging since MRI operates by exciting the protons in human tissue, and the lungs have a proton content that is one-fifth of the surrounding tissue. To alleviate this problem, MRI patients are dispensed hyperpolarized noble gases, which then increase the MRI signal within the cavity of the lungs by several orders of magnitude, allowing for imaging of lung structure and ventilation. Hyperpolarization involves the spin characteristics of the nucleus, which we will study in a future chapter. Figure (a) Figure (b) Fig. (a) compares a conventional MRI to one in which hyperpolarized xenon gas has been inhaled by the patient (green portions of image). The hyperpolarized xenon shows that a portion of the right upper lobe is not properly ventilating (white arrow in Fig. (b)). A typical dose during this procedure consists of of 300 mL xenon-129 (molar mass 128.9 g/mol) and 700 ml of nitrogen gas (molar mass 28.0 g/mol) at…
State which of the following vibrations are IR active and which are IR inactive: N₂, CO and CO₂ (stretching). Give a brief explanation for your answers.
Among TiCl4, VCl3 and FeCl2- which one will be drawn more strongly into a magnetic field and why?
Does the minimization of electron-electron repulsions correlate with Hund's rule?
5. The fundamental vibrational frequencies for 1H19F and 2D19F are 4138.52 and 2998.25 cm-1, respectively, and De for both molecules is 5.86 eV. What is the difference in the bond energy (bond dissociation energy) of the two molecules? A) 0.567 eV B) 0.15 eV C) 0.0707 eV D) 0.254 eV
The electric dipole moment of methyl benzene (toluene) is0.40 D. (a) Estimatethedipolemomentsofthethreedimethylbenzenes (xylenes). (b) Also estimate the dipole moments of (i) 1.2.3-trimethylbenzene, Ii i) 1 ,2.4-trimethylbenzene. and (ii i) 1 ,3,5-trimethylbenzene. (c) Which of the values can you be sure about?
(b) Molecule X undergoes the photophysical processes listed below. Name each process (1) - (5) and represent them on a Jablonski diagram. So +hv → S, (1) S >S, +hv (2) S, – >T; + A (3) T →S, +hv (4) k4 T,- > S, + A (5)