A compound is aromatic when -
(1) It is cyclic. (2) planer. (3) it has conjugated pi electrons. And (4) it has (4n+2) pi number of electrons.
Given compound is - planer, cyclic, it has conjugated pi electrons, but the total number of pi electron is 4 i.e. it has 4n pi electrons.
So, answer is - (d) it has 4n electrons.
Question 31 (2 points) Why is the following compound not aromatic? O A) The p electron...
26,30.Explain why.
31,32. Explain why.
26. What is the IUPAC name of the following compound? A 2-Nitro-5-carboxychlorobenzene B. 2-Chloro-4-carboxynitrobenzene 099 2-Chloro-1-nitro-4-benzoic acid D. 3-Chloro-4-nitrobenzoic acid 27. What is the correct structure for para-bromotoluene? Be Meo BE Br Br WI B II C. IL DIV 28. Why is the following compound not aromatic? A It has 4n -electrons. It is not cyclic C. It has 4n+ 2 -electrons D. The p electron orbitals are not continuous 29. What is the hybridization...
Aromaticity Worksheet CHEM 2410 Fall 2019 Determine if the following compounds are aromatic, anti-aromatic or non-aromatic. Give reasons for your answer. ***Assume all the cyclic compounds are planar (flat) for these problems. Summary Notes: Aromatic - 4n+2 pi electrons, complete cyclic conjugated pi system and planar (flat) Anti-aromatic - 4n pi electrons, cyclic conjugated pi system and planar(flat) Non-aromatic-breaks any of the above rules (all other compounds) Sp3 hybridized heteroatoms (O, S, N) are involved in the pi system Sp2...
Aromaticity Worksheet CHEM 2410 Fall 2019 Determine if the following compounds are aromatic, anti-aromatic or non-aromatic. Give reasons for your answer. ***Assume all the cyclic compounds are planar (flat) for these problems. Summary Notes: Aromatic - 4n+2 pi electrons, complete cyclic conjugated pi system and planar (flat) Anti-aromatic - 4n pi electrons, ccyclic conjugated pi system and planar(flat) Non-aromatic - breaks any of the above rules (all other compounds) Sp3 hybridized heteroatoms (O, S, N) are involved in the pi...
Question 1 (2 points) Which one of the following compounds is aromatic? IV O a) 1 Ob) III Oc) IV O d) 11 Question 2 (2 points) Which structure shown below represents (Z)-3,5-dichloro-3- hexen-1-yne? CI IV 11 TIT O a) Ob) III Oc) 11 Od) IV
Select the single best answer. Is the following compound aromatic? If it is not aromatic, select the answer which best states why it is not aromatic. O It is not aromatic. It does not have 4n + 2 electrons. It is not aromatic. It is not completely conjugated. It is aromatic. It is not aromatic. It is not planar.
Which of the following statements is not true for a compound to be considered aromatic? Select one: O a. the compound must be monocyclic b. the compound must have 4n + 2 pi-electrons delocalized over the ring system O c. the compound must have conjugated p-orbitals at ever atom of the ring o d. the compound must be planar
Question 26 (2 points) Saved Which of the following ions is aromatic? D:0 = I II IV OA) OB) 11 OC) III OD) IV Question 27 (2 points) Saved Which of the following ions is aromatic? 20: A) Only II and III OB) Only III and IV OC) Only I and II OD) Only II and IV
Use the following list of compounds to answer the following questions Select the compound that is best described as: (a) A neutral system, 4x electrons, anti-aromatic (b) A 6 electron aromatic system. (C) An aromatic system because n = 2 in Huckel's rule 4n+2 (d) A 6 electron conjugate non-aromatic system (e) An unconjugated hydrocarbon. (1) Not aromatic as it is drawn, but if removed, it would aromatic cation (6) Not aromatic as it is drawn, but it has a...
2. Which of the following pi electrons in a cyclic compound meet the criteria of Hückel's rule? a. 4N b. 6N C. 4N42 d. 6N+2 3. From the following compounds having 10 pi electrons that meet Huckel's rule, circle on the aromatic ring. ??
Question 7 (2 points) A compound with a molecular formula of C10H1202 has the following TH NMR spectrum. Which of the following structures is consistent with this spectrum? OCH CH.CH CH,CH.CH 1 OOH OH CH,CH,CH, CH2CH.CH IV Oa) III Ob) IV Oc) 11 od) Question 8 (2 points) Predict the product(s) for the following reaction: NH, 14H NH $ NH2 Oa) I and II ob) I, II and III Oc) III and I od) II and III