Concept explainers
Interpretation:
Whether azulene, an isomer of naphthalene, is
Concept introduction:
According to Huckel’s rule a planar, cyclic conjugated system will be aromatic if it contains (4n+2)Ï€ electrons. Systems with 4nÏ€ electrons will be antiaromatic.
Resonance structures differ only in the position of lone pair or its π electrons. The position of atoms in different resonance forms do not differ. They do not represent the actual structure of the molecule. The actual structure is a hybrid of all the resonance forms possible.
To state:
Whether azulene, an isomer of naphthalene, is aromatic.
To draw:
Another resonance form of azulene in addition to that shown.
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Chapter 15 Solutions
Organic Chemistry
- or the molecule below, whic The molecule is aromatic The molecule is not aromatic The molecule is not aromatic O The molecule is not aromatic O We cannot determine if the mearrow_forwardo. Opioids are compounds derived from opium, which comes from the opium poppy. Although in reality, all poppies produce opoids, the drug “morphine" , codeine as well as other opioid pain killers are typically derived from opium. A quick way to find or identify these compounds is to look for a six-membered ring containing a nitrogen. Often, if you see a six-membered ring with a nitrogen, you have some sort of an opoid or a modified synthetic pain killer. With that said, morphine and codeine are typically not injected or given orally in pure form. Instead, their salts are used, such as morphine sulfate or codeine phosphate. Why are the salts used or administered instead of the pure substances (or non-salt forms)? (I am not interested in drug names, but to have you answer the why of this question.) BIU E E E E 3回fe 27 В. acen W 1 F T F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 () NumLk Prt Sc Pause Brarrow_forwardStructures with carbocations can often also have resonance forms. Draw the other resonance structure for the moleculearrow_forward
- When is a molecule aromatic? Explain?arrow_forwardThe aromatic energy diagram below corresponds to an anti-aromatic compound.?arrow_forwardQuestion 2. Draw the molecular orbital diagrams for thioazepine. Indicate if this compound is aromatic, non-aromatic or anti-aromatic using this energy diagram. Justify your answer. N Sarrow_forward
- Please answer all of it. If not, please skip. Draw the structure of a branched hydrocarbon that also contains at least one atom with trigonal planar geometry. Draw the structure of an aromatic hydrocarbon containing two halogens. Draw the structure of a molecule containing an aliphatic primary amine and a carboxyl group. Draw the structure of an acyclic molecule containing a primary and a secondary alcohol group. Draw the structure of an achiral tertiary alcoholarrow_forward1. Which of the following structures is considered aromatic?arrow_forward4. Explain why the following molecule is considered aromatic. (it may help to draw a resonance form) O:arrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning