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Q: 6. Considering following reactions concerted, predict the stereochemical modes involved and classify…
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Show how to construct the
molecular orbitals of a conjugated
cyclic system similar to benzene and
cyclobutadiene
Step by step
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- Measure the C-C-C and C-C-H bond angles in the energy-minimized model of cyclohexene and compare them with those predicted by VSEPR. Explain any differences.The pentadienyl radical, H2C“CH¬CH“CH¬CH2#, has its unpaired electron delocalized over three carbon atoms. How many nodes are there in the lowest-energy MO of the pentadienyl system? How many in the highest-energy MO?1/ Show how the participating p orbitals interact to form the highest energy pi molecular orbital of benzene. 2/ Use the polygon rule to draw the MO energy diagram of the cyclononatetraenyl anion. Assuming planarity, would this ion be aromatic or antiaromatic?
- Cyclopropane and cyclobutane have similar strain energy despite the fact that the C—C—C bond angles of cyclopropane are much smaller than those of cyclobutane. Suggest an explanation for this observation, considering all sources of strainCis-but-2-ene has a different set of properties compared to trans-but-2-ene. The meltingpoints of these two compounds is influenced primarily by what factor? Choices:Symmetry of moleculeDipole momentHydrogen bondingVan der Waals interaction’How would you develop a molecular orbital for a structure like buta-2-diene that has an anion on the first carbon and a cation on the fourth carbon? Also, how would MO look like for 2-dimethyl-1,3-pentadiene?
- write structural formulas for all the compounds that are trichloro derivatives of cyclopropane, which are chiral and which are achiral?Is the molecular orbital diagram of 1,3-butadiene the same as cyclopenta-1,3-diene? If so how come? Doesn't the latter have 5 p orbitals or will it technically only have 4?(a) Use the polygon rule to draw an energy diagram for the MOs of a planar cyclooctatetraenyl system. (b) Fill in the eight pi electrons for cyclooctatetraene. Is this electronic configuration aromatic or antiaromatic? Could the cyclooctatetraene system be aromatic if it gained or lost electrons? (c) Draw pictorial representations for the three bonding MOs and the two nonbonding MOs of cyclooctatetraene. The antibonding MOs are difficult to draw, except for the all-antibonding MO.
- use frontier molecular orbitals to explain if the 6+2 cycloaddition occurs under thermal or photochemical theory please draw molecular orbitals throughly. thank you very much!Using what you know about the conformational energetics of substituted cyclohexanes, predict which of the two decalin isomers is more stable. Explain your reasoning.Write a conformational structure for 1,2,3-trimethylcyclohexane in which all the methyl groups are axial and then show its more stable conformation.