The difference between mesitylene ( 1 , 3 , 5 -trimethylbenzene ) and isopropylbenzene (cumene) by 13 C NMR spectroscopy is to be stated. Concept introduction: NMR spectroscopy is a technique used to determine a unique structure of the compounds. It identifies the carbon-hydrogen bonding of an organic compound. A hydrogen atom is known as a proton in the NMR spectroscopy. The number of NMR signal in a compound is equal to the number of chemically non-equivalent protons present in that compound. The more the shielded proton, lesser will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region or vice versa. The 13 C NMR spectroscopy is used to determine the number of equivalent and non-equivalent carbon atoms and to identify the type of carbon atoms present in the compound.

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Chapter 16, Problem 16.9P

Interpretation Introduction

Interpretation:

The difference between mesitylene (1,3,5-trimethylbenzene) and isopropylbenzene (cumene) by 13C NMR spectroscopy is to be stated.

Concept introduction:

NMR spectroscopy is a technique used to determine a unique structure of the compounds. It identifies the carbon-hydrogen bonding of an organic compound. A hydrogen atom is known as a proton in the NMR spectroscopy.

The number of NMR signal in a compound is equal to the number of chemically non-equivalent protons present in that compound. The more the shielded proton, lesser will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region or vice versa.

The 13C NMR spectroscopy is used to determine the number of equivalent and non-equivalent carbon atoms and to identify the type of carbon atoms present in the compound.

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