ORGANIC CHEM PRINT STUDY GDE & SSM
ORGANIC CHEM PRINT STUDY GDE & SSM
4th Edition
ISBN: 9781119810650
Author: Klein
Publisher: WILEY
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Chapter 14, Problem 39PP
Interpretation Introduction

Interpretation: The number of carbon atoms present in the given compound under given conditions should be determined.

Concept Introduction:

Mass spectroscopy: It is a form of spectroscopic technique which is used for the elucidation of the molecular formula and molecular weight of the compound, depending upon the mass of the molecule.

The (M+1)+· peak: It denotes the peak that arises next to molecular ion peak in the mass spectrum. The peak arises due to the presence of the isotope of carbon (13C).

The (M+1)+· peak in mass spectroscopy is used to explain the number of carbon atoms present in a molecule depending on the abundance of (M+1)+· peak.

(Abundanceof(M+1)+·peakAbundanceof(M)+·peak)×100%1.1%

Molecular formula: It represents the types of atoms with their total number present in a given molecule.

Molecular ion peak (M)+· : It is defined as the heaviest peak in the IR spectrum of the molecule which represents the largest molecular ion in the given molecule with greater m/z value.

Base peak: It is the tallest peak in the spectrum.

To determine: The number of carbon atoms present in the given compound.

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