Indole smells terrible in high concentrations but has a pleasant floral-like odor when highly diluted. Its structure is The molecule is planar, and the nitrogen is a very weak base, with Kp = 2 × 10-12. Explain how this information indicates that the indole molecule is aromatic.
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- To be aromatic, a molecule must be planar conjugated, and obey the 4n+2 rule. The following molecule is aromatic? Draw the resonance structures for cycloheptatriene anion.n of the following molecules could be considered aromatic? Assume all of the compounds are planar. T: Are these proper Lewis structures? ZI NH₂ N HBMany coloured dyes contain aromatic compounds that have two or more benzene rings. After long-term exposure to the sun, these dyes tend to fade. Propose an explanation for this phenomenon, taking into consideration the bonding nature of aromatic compounds.
- Determine if the following compounds are aromatic, non-aromatic, or anti-aromatic. Show a structure that helps to support your classification. This structure should not just redraw the compound; show lone pairs, resonance, and/or contributing π bonds as part of your explanation.Azulene, an isomer of naphthalene, has a remarkably large dipole moment for a hydrocarbon (μ = 1.0 D). Explain, using resonance structures.Formaldehyde, H2C=O, is known to all biologists because of its usefulness as a tissue preservative. When pure, formaldehyde trimerizes to give trioxane, C3H6O3, which, surprisingly enough, has no carbonyl groups. Only one monobromo derivative (C3H5BrO3) of trioxane is possible. Propose a structure for trioxane.
- Aromatic compounds must have a p orbital on every atom in the ring. Define this ?Which of the following structures is/are not aromatic? 3 O 2 and 3 only O 1 and 3 only O 1 and 2 only O 2 only O 3 only 2. 1-What is the major difference between an antiaromatic and aromatic compound? Antiaromatic compounds have at least one sp³ hybridized atom in the ring. Antiaromatic compounds are not conjugated. Only aromatic compounds have 4n+ 2 pi electrons. The structure must be cyclic for aromatic but not antiaromatic compounds. Aromatic, not Antiaromatic compounds, are planar.
- Acridine is a heterocyclic aromatic compound obtained from coal tar that is used in the synthesis of dyes. The molecular formula of acridine is C13H9N, and its ring system is analogous to that of anthracene except that one CH group has been replaced by N. The two most stable resonance structures of acridine are equivalent to each other, and both contain a pyridine-like structural unit. Write a structural formula for acridine.For the following molecules, show how the aryl substituents impact the electron density at the unique carbons around the aromatic ring by showing all unique resonance structures, including appropriate formal charges. OMe Me MeO MeThere are two C–C single bonds in penta-1,3-diyne. (a) Which of those bonds would you expect to be stronger? (b) Which of those bonds would you expect to be shorter? (c) The molecule is moderately polar, with a dipole moment of 1.37 D. In which direction would you expect the dipole moment to point? Explain. Penta-1,3-diyne