For the structures shown below, state the number of pi electrons present in the molecule.HH.H.H.HNumber 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?Submit AnswerTry Another Version3 item attempts remaining81%

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

For the structures shown below, state the number of pi electrons present in the molecule. H H. H. H. H H H Number of pi electrons = Number of pi electrons = %3D 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. H H. H. H. H H H Number of pi electrons = Number of pi electrons = %3D Is the molecule aromatic according to the Huckel criteria? If the molecule were planar, would it be antiaromatic?

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter20: Dienes, Conjugated Systems, And Pericyclic Reactions

Section: Chapter Questions

Problem 20.25P

See similar textbooks

Related questions

Q: The purine heterocycle occurs commonly in the structure of DNA.a.How is each N atom hybridized? b.In…

A: a.

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: Draw just the bonding p-MO’s for the cycloheptatrienyl cation. Draw the energy diagram to show the…

A: The bonding p-MO’s for the cycloheptatrienyl cation has to be drawn. The energy diagram to show the…

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

Q: Identify the molecule below as aromatic or not aromatic (assume planarity and full conjugation of…

A: Huckel's rule for aromaticity states that a molecule must meet all of the following four conditions…

Q: 20. Which of the following is aromatic (select all that apply)?

A: According to Buckle's rule Compounds having cyclic planar structure and 4n+2 pi electrons are known…

Q: Please rank the below aromatics in order of increasing electron richness (least to most). OMe 2 NH₂…

Q: Use the inscribed polygon method to show why cyclobutadiene is not aromatic. cyclobutadiene 4 x…

A: To find: Show why cyclobutadiene is not aromatic using inscribed polygon method

Q: Write three questions and answer it. 1. A question dealing with spectroscopy 2. A question about…

A: Answer - Q1. How is spectroscopy used in everyday life? Answer - Spectroscopy is used as a tool for…

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: LOD 4000 3000 2000 1S00 1000 S00 MAVENUNEERI

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

Q: Biphenyl has the following structure.(a) Is biphenyl a (fused) polynuclear aromatic hydrocarbon?(b)…

A: (a)

Q: Explain why triphenylene resembles benzene in that it does not undergo addition reactions with Br2,…

Q: 6) Stability of aromatic molecules: Which can be chssitied as being aromatic? c)

A: To Molecule become aromatic , there are some rules must be satisfied by the Molecule . 1. Molecule…

Q: Draw out the orbital structure and indicate if aromatic, antiaromatic, or non-aromatic furan…

Q: Draw an Aufbau (energy level) diagram for the n-bonding system in following compound. Properly label…

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

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: The compound below is aromatic even though it has 16 pi electrons. Explain

A: Aromatic compounds are the compounds with planar ring compounds. It has conjugated pi electrons. In…

Q: 1. 2. H' H エエ 3.

A: Note : As per our company guideline we can answer only three subparts. Kindly repost the question…

Q: Early structural studies on benzene had to explain the following experimental evidence. When benzene…

A: When benzene is treated with Br2, it forms a single substituted product. The bromine atom can…

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: How many pi electrons are there in the two aromatic rings of biphenyl?

A: To determine the number of pi electrons in the two aromatic rings of biphenyl

Q: Which structure is NOT aromatic? d. Do .. H3C :Br:

A: In order to decide a compound to be aromatic the following points are considered. The compound…

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: Using Hückel rule calculate to confirm if this compound is aromatic or not? E ET (12pt) 3 v Arial…

A: Huckle Rule = 4n+ 2

Q: (Chapter 9) Write all of the resonance contributors for the following molecule. If the various…

A: The resonance structure of a compound is formed when the lone pair of electrons present on an atom…

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

Q: 8. if aromatic/antiaromatic pi electrons 9. if aromatic/antiaromatic pi electrons 10. if…

Q: Match the structure with the correct description based on Huckel's Rules. O Hold and drag to reorder…

A: Huckel rule explains about aromatic , non aromatic and anti aromatic nature of compound.

Q: H3CO CI ARO NHCH3 MAT OCH 3 NH₂ TIC OCH 3 CI NO₂ HYD # CH3 ROC

A: When substitution at position-1 and position-3 in benzene ring called meta-substitution . When…

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

A: The Compounds which follows Huckel rule are called as the aromatic compounds. Huckel rule is 4n+2=π…

Q: N-

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

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: According to Huckel's rule, what is the value of "n" for the aromatic compound shown here? OCH3 N.

A: We are to explain the huckel's rule for given aromatic compound. It has three rings with some double…

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: In RPLC, consider this statement: Compound A is more polar than compound B. In which column will…

A: As A is more polar so for more retention of A the stationary phase must be polar.

Q: Answer the following questions about the cyclopropenyl anion: a. How many T-electrons does the…

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: Are the following molecules aromatic, antiaromatic, or non-aromatic? Why?

A: For a structure to be aromatic, the following conditions are required: 1. It must be closed…

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

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

A: According to huckel rule of aromaticity for a molecule to be aromatic it should be cyclic planar and…

Q: 28. Assume that the following molecule is planar. Use the Frost method to explain whether it is…

A: Frost method is a useful method for drawing energy levels in cyclic Pi systems. In this method a…

Q: The unusual molecule below is aromatic and somewhat stable in spite of the positive charge on…

A: Note: Resonance is possible any double bond is conjugated with another double bond or atom is having…

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,…

Q: Estimate the pK, values for the functional group classes represented by the given molecules. CEC-H…

A: Dissociation of a weak acid is given by: HA ↔ H+ + A-The acid dissociation constant of this acid…

Concept explainers

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.

Question

100%

For the structures shown below, state the number of pi electrons present in the molecule.
H
H.
H.
H.
H
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?
Submit Answer
Try Another Version
3 item attempts remaining
81%

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

Explain how IR spectroscopy could be used to distinguish between polymers I-III shown below. In youranswer, you should specify the diffrences between the spectra of the polymers that would lead tounambigiguous identifcations
i need help with predicting the Ir spectrom for the final product i also need to make it look like the exanplem with the table and the ir spec i made an example og how it needs to look like and linked the lab called Electrophilic Aromatic Substitution: Friedel-CraftsAlkylation
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?
Compound MM (g/mol) Volume Used (mL) d (g/mL) Weight Used (g) Moles Used Equivalence 9-anthracenemethanol 208.26 g g/mol N/A N/A 0.065 g (given) 0.0003 (rounded) 1 N-methylmaleimide 111.10 g/mol N/A N/A 0.104 g (given) 0.0003*3 = 0.0009 (rounded) 3 Diels-Alder Adduct/Product 319.4 g/mol N/A N/A 1 Please figure out the theoretical yield and moles of the product based on the table and image.
Both of the mass spectra are of an aromatic compund. Identify the fragments.
Consider the product below a) Predict the 1H NMR spectrum for this molecule. Predict the multiplicity, integration and relative ppm b) Predict the 13C NMR spectrum and DEPT spectra. Use (+) for positivesignals, (-) for negative signals, and (X) for no signal in the DEPT NMR spectra.
Consider the product below. a) Would this molecule have a non-zero alpha-value in polarimetry? Why? b) What stretches would be expected in an IR spectrum of this molecule? c) Predict the 1H NMR spectrum for this molecule. d) Predict the 13C NMR spectrum and DEPT spectra for all the Carbons. Use (+) for positive signals, (-) for negative signals, and (X) for no signal in the DEPT NMR spectra.
Help needed with the following C-NMR analysis on the molecule hexaphenylbenzene. Note: we can assume the ispo carbons for the central ring are downfield of those of the subtitients. "Ipso" standing for the aromatic carbon to which a susbstituent is attached. Thank you in advance!
Aromatic compounds also known as arenes or aromatic are chemical compounds that contain conjugated planar ring system with delocalized pi electron clouds instead of discrete alternating single and double bond. One of the precursor to produce aromatic compounds is arenediazonium.Critize this statement
Consider the product. a) Predict the 1H NMR spectrum for this molecule. Find the Multiplicity, Integration and the Relative ppm of each Hydrogen. b) Predict the 13C NMR spectrum and DEPT spectra. Use (+) for positivesignals, (-) for negative signals, and (X) for no signal in the DEPT NMR spectra using the table below
This was a Diels-Alder on Water lab where we combined 9-anthracenemethanol and N-methylmaleimide to make the Diels-Alder Adduct. I provided you with the NMR, the observed peaks from left to right, and a table that could be helpful. Which functional group represents each peak? Observed Peaks 7.08 ppm 5.28 ppm 3.33 ppm 2.52 ppm 2.14 ppm 1.63 ppm
Literature IR spectrum of salicylic acid - copy image of the IR (KBr disc) from SDBS and attach here - (For all IR spectra: labelling of diagnostic peaks, written structure, and figure title explaining conditions of IR (i.e. KBr) and for what compound.)