Organic Chemistry
Improve your experience by picking them
The methyl-H highlighted in the isopentane structure appears at 0.87 ppm, while that of 2-methylbut-2-ene appears at 1.56 ppm. Rationalize this observation.
The presence of an sp2-carbon creates magnetic anisotropy, which shields the nearby proton and shifts the NMR signal downfield.
The presence of an sp2-carbon creates magnetic anisotropy, which shields the nearby proton and shifts the NMR signal upfield.
The presence of an sp2-carbon creates magnetic anisotropy, which de-shields the nearby proton and shifts the NMR signal upfield.
The presence of an sp2-carbon creates magnetic anisotropy, which de-shields the nearby proton and shifts the NMR signal downfield.