1. For the four structures provided, Please answer the following questions in the tablebelow.a. Please draw π molecular orbital diagram (use the polygon-and-circle method ifappropriate) and fill electrons in each molecular orbitalb. Please indicate the number of π electronsc. Please indicate if each molecule provided is anti-aromatic, aromatic, or non-aromaticTT MO diagramNumber of π e-Aromaticity Evaluation (X choose one)Non-aromaticAromaticAnti-aromatic|||||+IV

cyclopentadiene molecule:Number of pi electrons =4aromaticity= nonaromatic. cyclopentadienyl…

Answered: 1. For the four structures provided,…

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter18: Aromaticity

Section: Chapter Questions

Problem 19CTQ

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Heteroaromatic Structures Aromatic compounds which contain non-carbon atoms (e.g., O, N, S) as part of the cyclic conjugated a system are called heteroaromatics. the ring OR a lone pair in a p-orbital. Only one p The heteroatom can be a part of the conjugation as either part of a r bond orbital from the atom can align to contribute to the aromaticity. For example, let's look at furan (shown to the right). How many lone pairs are on the oxygen in this structure? O 3 lone pairs O 1 lone pair O 2 lone pairs O O lone pairs How many electrons are in the r bonds? O 0 electrons O 4 electrons O 2 electrons O 1 electron O 5 electrons O 3 electrons O 6 electrons To determine, the total number of x electrons to use for the Huckel calculation, you need to determine how many of the non-bonding electrons on the oxygen are aligned with the x bonds. Is the red orbital on oxygen aligned with r bonds? O yes O no Is the blue orbital on oxygen aligned with x bonds? O no O yes What is the total number of…
Aromatic compound and reaction intermediate, see questions below. Thx
5. Which of the following molecules is aromatic or anti-aromatic? Support your claim with an MO diagram and checking the molecule against the rules of aromaticity. CH
Answer the following questions for the non-aromatic compound. 1. is every compound cyclic? yes or no 2. is every compound conjugated? yes or no 3. is every atom with a p-orbital connected to atoms on both sides that have a p-orbital? yes or no 4. based on the orbital drawings, are all p-orbitals in the same plane? yes or no
This structure is considered to have 'anti-aromatic character. Using the provided resonance structures, draw the curved electron-pushing arrows to show the interconversion between resonance hybrid contributors. Be sure to account for all bond-breaking and bond-making steps. Drawing Arrowes :0:
5. Consider each compound below. Note the number of electrons participating in the TT system for each compound and indicate if it is aromatic, anti-aromatic or not aromatic (assume planarity for all molecules). .N. TT electrons TT electrons TT electrons TT electrons Aromatic? Aromatic? Aromatic? Aromatic?
4. Explain why the protons on the sp³-hybridized carbon of propene (CH3-CH=CH₂) are more acidic than the protons on the sp²-hybridized carbons of propene, even though sp2-hybridized carbons are more electronegative than sp³-hybridized carbons. Use both structures and sentences in your answer.
Which statement concerning the substances below is correct? A) Compound I is non-aromatic. B) Compounds II and IV are aromatic. C) Compounds I and Ill are anti-aromatic. D) Compound II is anti-aromatic.
1. Label the following rings as aromatic, anti-aromatic, or non-aromatic. Briefly indicate your reasoning for any molecules that are not aromatic. 2. label the hybridization at every non-metallic heteroatom. Н BrMg HN H2N. N. 'N' B. `H. Н N'
For the following compounds answer part a and b.
Draw a molecular orbital diagram for the pi system of tetrazole (including the piacemen oi iis pi electrons) and provide an analysis of its aromaticity using Hückel's rule denoting whether tetrazole is in fact aromatic, antiaromatic, or nonaromatic. H N° Tetrazole b. Provide a picture of the Highest occupied Molecular Orbital (HOMO) and the Lowest Unnocupied Molecular Orbital (LUMO) of tetrazole depicting the phases of thep orbitals, the bonding, antibonding, and non-bonding interactions.
Rank the molecules in decreasing (strongest to weakest) acidity. Include resonance structures if necessary and explain reasoning for rank.

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