Questions 1 & 2 Please Draw an Aufbau (energy level) diagram for then-bonding system in following compound. Properlylabel each of the n orbitals as n, mmb, or rť orbitals.Briefly explain if the compound is aromatic orantiaromatic based on the diagram.1.Which of the following species are aromatic or anti-aromatic? Assume all n-systems are in a planar arrangement. Circle thosethat are aromatic. Put an X through those that are anti-aromatic. Leave non-aromatic species unmarked. No explanationsare needed.2.

The aromaticity of a compound depicted by Huckel's rule of aromaticity : The molecule has to be…

Answered: Draw an Aufbau (energy level) diagram…

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter18: Aromaticity

Section: Chapter Questions

Problem 7CTQ

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1. Is the molecule below aromatic? If so, circle the atoms that are part of the aromaticity. Also indicate the orbital that each lone pair occupies. .N. H2N
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.
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…
Determine if the following are aromatic, anti-aromatic, or non-aromatic. Provide supporting reasoning for each case. H. NH
Letter E Give the pi orbital , electron orbital, and identify if aromatic, nanoromatic, antiaromatic Assume that structure is planar
1. Draw an aromatic ring, which contains only hydrogens and 5 carbons; add charges and lonepairs if needed 2. Draw a non-aromatic ring which contains only hydrogen and 5 carbons and have conjugateddouble bonds; add charges and lone pairs if needed.
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?
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:
Which of the following best describes the lone pairs on oxygen in the following aromatic molecule. The two lone pairs on oxygen are not shown in the picture below. One lone pair on oxygen is in an sp² orbital and the other is an unhybridized p-orbital and participates in aromaticity. Both lone pairs on oxygen are in an sp3 orbitals and can't participate in aromaticity. Both lone pairs on oxygen are in unhybridized p-orbitals and both participate in aromaticity. The lone pairs of oxygen have nothing to do with this compound being aromatic.
For the molecule below is the ring (as shown – the particular resonance form drawn) aromatic, why or why not? Using correct arrow-pushing convention, show the formation of a resonance form of the above structure that is aromatic. What is the charge of the five-membered ring in the main contributing resonance form?
2. Label each structure as Aromatic, Anti-aromatic, or NOT Aromatic. Also provide your reasoning for each choice: : N N: +0: : N- : N
Question 2. Draw the molecular orbital diagrams for the three compounds below. Indicate if they are aromatic, non-aromatic or anti-aromatic using this energy diagram. Justify your answer. Å Å Å A

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