For the structures shown below, state the number of pi electrons present in the molecule. ОН НО Number of pi electrons Number of pi electrons = Is the molecule aromatic according to the Huckel criteria? If the molecule were planar, would it be antiaromatic?

For the structures shown below, state the number of pi electrons present in the molecule. ОН НО Number of pi electrons Number of pi electrons = Is the molecule aromatic according to the Huckel criteria? If the molecule were planar, would it be antiaromatic?

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter18: Aromaticity

Section: Chapter Questions

Problem 4E

See similar textbooks

Related questions

Q: For each of the species below, identify any cyclic conjugated system, then: A. Determine the number…

A: Highly stable conjugated cyclic compounds that do not give addition reactions and follow the Huckel…

Q: Is this compound aromatic? Explain why or why not. What if the charge was positive instead of…

A: Conition for compound to be Aromatic. Cyclic, planar, all carbon SP2hybrid, and follow Huckel rule…

Q: For each of the species below, identify any cyclic conjugated system, then: A. Determine the number…

A: Lone pair parallel to the pi-orbitals is counted as two electrons. Aromatic: cyclic, planar with…

Q: Aromatic compounds also known as arenes or aromatics are chemical compounds that contain conjugated…

A: step 1

Q: Is furan an aromatic molecule? Why or why not? :O:

A: Aromaticity is a property of conjugated cyclic systems in which the stabilization of the molecule is…

Q: For each of the species below, identify any cyclic conjugated system, then: A. Determine the number…

Q: How many pi electrons are there in the two aromatic rings of biphenyl? How does this number compare…

A: The number of pi electrons present in biphenyl is equal to twelve as there are two separated fully…

Q: Describe the ground-state electron configuration of the cycloheptatrienyl radical and anion.…

Q: For each of the species below, identify any cyclic conjugated system, then: A. Determine the number…

A: Organic compounds can be defined as the compounds that contain carbon and hydrogen atoms in a…

Q: Some of the following compounds show aromatic proper

A: Given compound name is 1-methyl-1H-pyrrole. It is a class of organic heterocyclic compound. Aromatic…

Q: Some of the following compounds show aromatic properties, and others do not. Predict which ones are…

A: For compound to be aromatic it must follow (4n+2)π huckel's rule. If n =0 : 2π electrons n= 1…

Q: Which of the following criteria satisfies non-aromaticity? Choose whichever is applicable. (can be…

A: Non-aromaticity is a characteristic of a cyclic molecule with a π electron system that has higher…

Q: Aromatic compounds also known as arenes or aromatic are chemical compounds that contain conjugated…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: Briefly describe the two determining factors for aromaticity. Determine if the structure below is…

A: Applying Huckle rule of aromaticity and conditions we can determine the aromatic compounds.

Q: which ones are likely to be aromatic, and explain why they are aromatic or not.

A: Aromatic compounds are those which follows (4n+2)π Huckel rule. For compound to be aromatic, it…

Q: A. Determine the number of electrons in a system of cyclic conjugation (zero if no cyclic…

Q: Which of the following compounds are aromatic based on the principles of the Huckel rule of…

Q: For each of the species below, identify any cyclic conjugated system, then: A. Determine the number…

Q: Is this compound aromatic, please explain why or why not?

Q: A. Determine the number of electrons in a system of cyclic conjugation (zero if no cyclic…

A: Note : Alkene on hydrogenation produces the alkanes ( see below). Aromatic : (4n+2) pi electrons,…

Q: Describe the following molecules as aromatic,antiaromatic,ornon-aromatic. Hint: sometimes resonance…

A: Aromaticity is term used for molecule which has more stability due to ring and planar structure

Q: Write down the Miller index in the grid direction that may be placed on the grid plane (112) among…

A: Miller index for (112) plane is (1 1 1/2).

Q: A. Determine the number of electrons in a system of cyclic conjugation (zero if no cyclic…

A: Aromaticity of the compound is determined by the delocalization of electrons. A compound is…

Q: For each of the species below, identify any cyclic conjugated system, then: A. Determine the number…

A: The rules for aromatic, anti-aromatic, and non-aromatic is given as,

Q: Is this compound aromatic, antiaromatic or not aromatic?

Q: Assuming all the following compounds are planar, determine whether they are aromatics, non-aromatics…

Q: 13. Draw Frost circle (polygon-in-a-circle) diagrams for TI molecular orbital energy levels of the…

Q: 2. State the two main experiments that were used to establish the extra stability of the benzene…

Q: Some of the following compounds show aromatic properties, and others do not. Predict which ones are…

A: Huckel's rule:The planar monocyclic conjugated system will be aromatic in character if it contains…

Q: For the structures shown below, state the number of pi electrons present in the molecule. H H. H. H.…

A: Huckel Rule: Aromatic: Cyclic, planar with 4n+2 ie 2, 6, 10..... pi electrons delocalized in to the…

Q: Which (parts) of the compounds listed below are aromatic?

Q: Which of the following are consistent with the requirements for aromaticity? I. A system with…

A: Criteria for Aromaticity The molecule is cyclic (a ring of atoms) The molecule is planar (all atoms…

Q: Discuss the aromaticity of the below compounds? Explain which compound is aromatic, why?

Q: Define Inscribed Polygon Method for Predicting Aromaticity ?

A: To predict whether a compound has π electrons completely filling bonding MOs, we must know how many…

Q: N-

A: The given compound is a benzimidazole. It is a bicyclo compound in which the fusion of benzene ring…

Q: For each of the species below, identify any cyclic conjugated system, then: A. Determine the number…

A: In a cyclic conjugated system, the single bonds and movable electrons line pi-bond electron, lone…

Q: 1. A.Electrons in a cyclic conjugated system.| B.The compound is (a, aa, or na)

A: Aromatic compounds Anti-aromatic compounds Non-aromatic Compounds - cyclic compounds - flat -…

Q: Draw a Frost circle for the cyclopentadienyl anion, which is drawn below. Identify the bonding,…

Q: 1 i. What is Resonance Theory? Sate five conclusions that can be drawn from the theory. ii. State…

A: (i) Resonance theory is the theory which tells about the structure of any molecule but not by…

Q: show aromatic properties, and others do not. Predict which ones are likely to be aromatic, and…

A: Primary Condition for Aromatic and Anti aromatic. (1) Compound should be planer (2) Compound…

Q: For each of the species below, identify any cyclic conjugated system, then: A. Determine the number…

A: If a cyclic , planner molecules has 4n+2 π electron it is considered as aromatic compounds. If a…

Q: For each of the species below, identify any cyclic conjugated system, then: A. Determine the number…

Q: Rationalize the aromaticity in the polycyclic molecule below using either the ring-by-ring method or…

A: This ring is aromatic because it have continue conjugation in the rings πbond-sigma-πbond . And…

Q: Aromatic properties are demonstrated by some of the following compounds, and others do not. Predict…

A: A compound is said to be aromatic when it follows the following properties: Cyclic Conjugated…

Q: Is the following compound aromatic? Explain the reasons for your answer?

A: Aromatherapy can be decided by checking three basic steps: I) all carbon atoms are sp2 hybridised.…

Q: Styrene (shown below) has 8 t electrons but is aromatic. Why?

Q: A. Determine the number of electrons in a system of cyclic conjugation (zero if no cyclic…

Q: Some of the following compounds show aromatic properties, and others do not predict which ones are…

Q: A. Determine the number of electrons in a system of cyclic conjugation (zero if no cyclic…

A: We have to determine the number of electrons in cyclic conjugation and the type of species(aromatic,…

Concept explainers

UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.

Question

For the structures shown below, state the number of pi electrons present in the
molecule.
ОН
НО
Number of pi electrons
Number of pi electrons =
||
Is the molecule aromatic according to the Huckel criteria?
If the molecule were planar, would it be antiaromatic?

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 1 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

Which one of the following statements from Chapter 8 and 18 is FALSE? O For a compound to be classified as aromatic, it must have an odd number of pairs of r-electrons and must be fully conjugated, cyclic and planar. O Inclusion of heteroatoms as part of the conjugated ring system renders the molecule to be considered non-aromatic. O Benzene is a six-membered ring where the r-electrons are equally shared across all six carbons in the ring and thus it possesses 36 kcal/mol of resonance stabilization energy. O All EAS reactions follow the same three mechanistic steps: (1) generate the electrophile, (2) capture the electrophile to give a carbocation intermediate, and (3) loss of a proton to regain aromaticity.
Which one of the following statements from Chapter 8 and 18 is FALSE? O For a compound to be classified as aromatic, it must have an odd number of pairs of n-electrons and must be fully conjugated, cyclic and planar. O Inclusion of heteroatoms as part of the conjugated ring system renders the molecule to be considered non-aromatic. O Benzene is a six-membered ring where the n-electrons are equally shared across all six carbons in the ring and thus it possesses 36 kcal/mol of resonance stabilization energy. O The key reaction in Chapter 18 is the EAS reaction, which stands for electrophilic aromatic substitution. O All EAS reactions follow the same three mechanistic steps: (1) generate the electrophile, (2) capture the electrophile to give a carbocation intermediate, and (3) loss of a proton to regain aromaticity.
State which of the following compounds is/are aromatic and non-aromatic? Classify the compounds based on Hückel's Rule by providing their n values. II II IV
Is the following compound aromatic or not? Choose the correct answer (with motive ) from the options given
Pyrene has been determined experimentally to be aromatic. At first glance, however, its structure appears to break Hückel’s rule. How so? Can you explain why pyrene exhibits aromaticity?Hint: What are the characteristics of the π system on the periphery of the molecule?
Consider the following compound, which has been synthesized and characterized:(a) Assuming this molecule is entirely conjugated, do you expect it to be aromatic, antiaromatic, or nonaromatic?(b) Why was this molecule synthesized with three tert-butyl substituents? Why not makethe unsubstituted compound and study it instead?(c) Do you expect the nitrogen atom to be basic? Explain. Why doesn’t nitrogen’s lonepair overlap with the double bonds to give a total of six electrons in the pi system?(d) At room temperature, the proton NMR spectrum shows only two singlets of ratio 1:2. The smaller signal remainsunchanged at all temperatures. As the temperature is lowered to -110 °C, the larger signal broadens and separatesinto two new singlets, one on either side of the original chemical shift. At -110 °C, the spectrum consists of threeseparate singlets of areas 1:1:1. Explain what these NMR data indicate about the bonding in this molecule. How doesyour conclusion based on the NMR data agree with…
Which of these images are not aromatic?
The instructions were to define if the molecule was aromatic or antiaromatic. If the element (such as N or O) has a double bond directly on it, then its lone pair doesn't count in the conjugation system; if there's a single bond, then its lone pair is counted. I counted the electrons on the lone pairs, and since the total was 6 e-, I labeled it as aromatic. was this correct?
Letter E Give the pi orbital , electron orbital, and identify if aromatic, nanoromatic, antiaromatic Assume that structure is planar
Categorize the following molecules as aromatic, anti-aromatic, or non-aromatic by adding the assigned letters to the corresponding category. Assume each molecule is planar.
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?
Please indicate how many pi electrons each of the following compounds have and whether they are aromatic, non-aromatic, or anti-aromatic.Assume that all the compounds are planar.