Interpretation:
The product of the reaction for given two reactants should be drawn.
Concept introduction:
In a sigmatropic reaction “ one new sigma-bond is formed as another breaks.”
Sigma tropic rearrangement reactions are designated with digits. For example a [1, 3] sigma tropic rearrangement describe a reaction in which the residue migrates from position 1 to position 3.
Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.
Woodward – Hoffmann rules for sigma tropic rearrangement reactions are listed below
Migration of carbon and hydrogen will occur in a sigmatropic rearrangement reaction. Migration of hydrogen in suprafacial and antarafacial rearrangement can be represented as follows,
Carbon migrating with one lobe of its p orbital interacting
Carbon migrating with both lobe of its p orbital interacting
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Chapter 28 Solutions
ORGANIC CHEMISTRY-W/S.G+SOLN.MANUAL
- 28. For each of the following species, add charges wherever required to give a complete, correct Lewis structure. All bonds and nonbonded valence electrons are shown. a. b. H H H H H :0-C-H H H H-C-H C. H H d. H-N-0: e. H H-O H-O H B=0 f. H—Ö—Ñ—Ö—H Norton Private Barrow_forwardAt 0oC and 1 atm, the viscosity of hydrogen (gas) is 8.55x10-5 P. Calculate the viscosity of a gas, if possible, consisting of deuterium. Assume that the molecular sizes are equal.arrow_forwardIndicate the correct option for the velocity distribution function of gas molecules:a) its velocity cannot be measured in any other way due to the small size of the gas moleculesb) it is only used to describe the velocity of particles if their density is very high.c) it describes the probability that a gas particle has a velocity in a given interval of velocitiesd) it describes other magnitudes, such as pressure, energy, etc., but not the velocity of the moleculesarrow_forward
- Indicate the correct option for the velocity distribution function of gas molecules:a) its velocity cannot be measured in any other way due to the small size of the gas moleculesb) it is only used to describe the velocity of particles if their density is very high.c) it describes the probability that a gas particle has a velocity in a given interval of velocitiesd) it describes other magnitudes, such as pressure, energy, etc., but not the velocity of the moleculesarrow_forwardDraw the skeletal structure of the alkane 4-ethyl-2, 2, 5, 5- tetramethylnonane. How many primary, secondary, tertiary, and quantenary carbons does it have?arrow_forwardDon't used Ai solutionarrow_forward
- Don't used Ai solutionarrow_forwardThe number of imaginary replicas of a system of N particlesA) can never become infiniteB) can become infiniteC) cannot be greater than Avogadro's numberD) is always greater than Avogadro's number.arrow_forwardElectronic contribution to the heat capacity at constant volume A) is always zero B) is zero, except for excited levels whose energy is comparable to KT C) equals 3/2 Nk D) equals Nk exp(BE)arrow_forward
- Please correct answer and don't used hand raitingarrow_forwardCalculate the packing factor of CaTiO3. It has a perovskite structure. Data: ionic radii Co²+ = 0.106 nm, Ti4+ = 0.064 nm, O² = 0.132 nm; lattice constant is a = 2(rTi4+ + ro2-). Ca2+ 02- T14+ Consider the ions as rigid spheres. 1. 0.581 or 58.1% 2. -0.581 or -58.1 % 3. 0.254 or 25.4%arrow_forwardGeneral formula etherarrow_forward
Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning