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4 rules of aromaticity: PAH: polycyclic aromatic hydrocarbon, 2 fused aromatic rings with a planar structure. Example: Chrysene. A Ring is aromatic if it has (4n + 2) pi electrons where n= 0,1,2,3,4..... Breaks one or more rules of aromaticity (stated previously) Examples: 1-hexyne, 1-heptyne, 1-octyne. 1. Be cyclic. 2.
23 Φεβ 2017 · So what are the rules? How can we predict whether a molecule is aromatic or not? Table of Contents. Four Key Rules for Aromaticity. Condition #1 for Aromaticity: The Molecule Must Be Cyclic. Condition #2: Every atom in the ring must be conjugated. Condition #3: The Molecule Must Have [4n+2] Pi Electrons. Which Electrons Count As “Pi Electrons”?
Study with Quizlet and memorize flashcards containing terms like What is the key characteristic that defines a compound as aromatic? a) Presence of a benzene ring b) A ring of six carbon atoms with alternating single and double bonds c) High reactivity with oxygen d) Lack of resonance stabilization, Which famous aromatic compound is often used ...
Aromaticity Practice Quiz: See how well you know aromatic, antiaromatic and non aromatic compounds along with aromaticity tutorial videos to fill in the gaps.
4 Criteria for Determining Aromaticity. Look for the following 4 criteria to identify aromatic compounds. I like to write a quick ‘checklist’ next to the molecule, or do a mental checklist when pressed for time. 4 checks = aromatic. Cyclic; Planar; Conjugated; Huckel’s Rule
There turn out to be 4 conditions a molecule must meet in order for it to be aromatic. It’s all or nothing. If any of these conditions are violated, no aromaticity is possible.
