Provide up to four instances of straightforward heterocyclic aromatic compounds (single ring), including drawing their structures and listing their names beneath the structures. ( pts each)
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- S Coronene is a polycyclic aromatic hydrocarbon. (a) How many total T electrons does it have? (b) Is that number consistent with the fact that the compound is aromatic? Explain. CoroneneFor 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?Which of these images are not aromatic?
- (b) Distinguish each as aromatic or antiaromatic in terms of electronic basis. Explain which one is more stable. (i) Compound A Compound B (ii) Compound C Compound D (iii) Compound E Compound FThis structure is considered to have '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. 1 :0: O: Select to Add Arrows - 0:0This 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. :0: Select to Add Arrows :0: I I I I
- 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.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 :0:3. Describe the following molecules as aromatic, antiaromatic, or neither. Hint: sometimes resonance structures reveal hidden aromaticity... or anti-aromaticity.
- Borole is a particularly unique heterocycle that has gained considerable attention in recent years for its peculiar reactivity. Draw a molecular orbital diagram for the pi system of borole (including the placement of its pi electrons) and provide an analysis of its aromaticity using Hückel's rule denoting whether borole is in fact aromatic, antiaromatic, or nonaromatic. H Borole3. (i) Give the criteria for a compound to be considered as aromatic. (ii) Identify, with explanation the compounds below as aromatic, antiaromatic, or nonaromaticWhich of the following compounds are aromatic and anti-aromatic? Give justifications for your answer. i) ii) iii) +, iv)