(a)
Interpretation:
The aromatic cyclopolyenes that are neutral are to be predicted.
Concept introduction:
A molecule must be cyclic, planar, completely conjugated and should follow Hückel’s rule to be classified as aromatic. According to the Hückel’s rule, the number of
(b)
Interpretation:
The aromatic cyclopolyenes that have single negative charge are to be predicted.
Concept introduction:
A molecule must be cyclic, planar, completely conjugated and should follow Hückel’s rule to be classified as aromatic. According to the Hückel’s rule, the number of
(c)
Interpretation:
The aromatic cyclopolyenes that have double negative charge are to be predicted.
Concept introduction:
A molecule must be cyclic, planar, completely conjugated and should follow Hückel’s rule to be classified as aromatic. According to the Hückel’s rule, the number of
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Physical Chemistry
- Which of the following structures are aromatic? CH2 I II II IV (a) I and II (b) III and IV (c) only I (d) І, II and IVarrow_forwardEvaluate each of the following processes applied to cyclooctatetraene, and decide whether the species formed is aromatic or not. (a) Addition of one more π electron, to give C8H8− (b) Addition of two more π electrons, to give C8H82− (c) Removal of one π electron, to give C8H8+ (d) Removal of two π electrons, to give C8H82+arrow_forwardProvide the bond-line structure of (Z)-4,5-dichloro-2-pentene.arrow_forward
- (b) (1-chloromethyl)cyclopentane, C6H11CI reacts with aqueous sodium hydroxide, NaOH to produce a primary alcohol AA. When CsH11Cl is added with magnesium, Mg in ether, an organometallic compound BB is formed. When compound BB reacts with ethanal, CH3CHO, a secondary alcohol cC is formed. The molecular structure of C6H11CI is given below. (1-klorometil)siklopentana, C6H11CI bertindak balas dengan akues natrium hidroksida, NaOH bagi menghasilkan satu alkohol primer AA. Apabila C6H11CI ditambah dengan magnesium, Mg dalam eter, sebatian organologam BB terbentuk. Apabila sebatian BB bertindak balas dengan etanal, CH3CHO, satu alkohol sekunder CC dihasilkan. Struktur molekul bagi C6H11CI diberikan di bawah. (1-chloromethyl)cyclopentanearrow_forward(1) Predict the outcome of the addition of HBr to (a) trans-2-pentene, (b) 2-methyl-2-butene, and (c) 4-methylcyclohexene. How many isomers can be formed in each case?arrow_forward4 Determine how many carbon environments each of the following molecules posess.arrow_forward
- (b) (1-chloromethyl)cyclopentane, CeH11CI reacts with aqueous sodium hydroxide, NaOH to produce a primary alcohol AA. When CeH11Cl is added with magnesium, Mg in ether, an organometallic compound BB is formed. When compound BB reacts with ethanal, CH3CHO, a secondary alcohol cCis formed. The molecular structure of CeH11Cl is given below. (1-klorometil)siklopentana, CoH1,CI bertindak balas dengan akues natrium hidroksida, NaOH bagi menghasilkan satu alkohol primer AA. Apabila CeH11CI ditambah dengan magnesium, Mg dalam eter, sebatian organologam BB terbentuk. Apabila sebatian BB bertindak balas dengan etanal, CH;CHO, satu alkohol sekunder CC dihasilkan. Struktur molekul bagi CsH11CI diberikan di bawah. .CI (1-chloromethyl)cyclopentane (i) Draw the structural formula for compound AA through Cc. Lukiskan formula struktur bagi sebatian AA sehingga C. (ii) What is the type of reaction to produce compound AA? Apakah jenis tindak balas untuk menghasilkan sebatian AA?arrow_forwardIs the following compound aromatic? explain / describe comprehensivelyarrow_forwardDraw structural formulas for the following compounds: (a) (2Z,4Z)-2,4-dibromo-3-methylhepta-2,4-diene (b) ((2E,4Z)-2-bromo-3,5-dichloro-4-methylhexa-2,4-dienearrow_forward
- Which of the following is true for the reactions of alkyl halides? (a) The characteristic reactions of alkyl halides are oxidation and reduction.(b) The characteristic reactions of alkyl halides are elimination and substitutionc. The characteristic reactions of alkyl halides are addition and substitutiond. Characteristic reactions of alkyl halides are addition and elimination.arrow_forwardAcridine 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.arrow_forwardWrite structural formulae of the following compounds: (i) 1 -Bromo-4-chlorobenzene (ii) l-chloro-4-ethyl cyclohexane.arrow_forward
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning