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Zinaida [17]
4 years ago
12

Provide a structure for the compound with molecular formula C9H12 and with the following spectroscopic data.1H NMR: 1.2δ (double

t, I=6H), 3.0δ (septet, I=1H), 7.1δ (multiplet, I=5H)

Chemistry
1 answer:
saveliy_v [14]4 years ago
3 0

Answer:

The structure analysis says the compound must be Cumene or isopropylbenzene

Explanation:

Degree of unsaturation or double bond equivalent

         D.B.E     =      C-\frac{H}{2}+\frac{N}{2}+1

                       =       9-\frac{12}{2}+\frac{0}{2}+1

                       =       4

¹H NMR data analysis

  (i)  1.2δ (doublet, I = 6H)   two CH₃ are equivalents and the multiplicity says the neighboring carbon have one hydrogen.

 (ii)  3.0δ (septet, I = 1H), one CH and the multiplicity says the neighboring carbon  have six hydrogens.

 (iii)  7.1δ (multiplet, I = 5H) , means

and the sturcture of the compound is

                   

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