Explain why each of the following structures is not consistent with the 13C NMR data in Study Problem 13.6.
Problem 13.6

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TABLE 13.1 Effect of Electronegativity on Proton Chemical Shift Chemical shift, 4.26 3.05 2.68 2.16 5.30 7.27 2.70 0.86 0.00 Entry number Compound CH,F CH CH Br CH CH,CI2 CHCI, CH,CCI, CH2LC CH,),Si Electronegativity (Table 1.1) F: 3.98 Cl: 3.16 Br: 2.96 : 2.66 C: 2.55 Si: 1.90 By definition CH,OCH CH,OCHy