Concept explainers
Interpretation:
One aspect from each of two spectroscopic methods that would distinguish each compound in the given pair is to be described.
Concept introduction:
舧 Nuclear Magnetic Resonance (NMR) is one of the most capable analytical techniques used for determining functional groups and how the atoms are structured and arranged in a molecule.
舧 Few elements, such as
舧 In
舧 Induced magnetic field consists of electricity generated from movement in a magnetic field.
舧 Infrared spectroscopy is a simple, instrumental technique, which helps to determine the presence of various functional groups.
舧 It depends on the interactions of atoms or molecules with the electromagnetic radiation.
舧 Infrared spectroscopy is most commonly used in the identification of the structure of the compound.
舧 Infrared spectroscopy is the examination of the infrared light interacting with a molecule. The examination can be done in three ways, that is, by measuring absorption, emission, and reflection, and it can also measure the vibration of atoms.
舧
舧 A compound containing protons or carbon-13, when placed under a strong magnetic field and treated with electromagnetic radiation of suitable frequency, the nuclei of the compound absorb energy through a process called magnetic resonance.
舧 Nuclear magnetic resonance spectroscopy is a graph showing characteristic energy absorption frequencies and intensities of a compound under magnetic field. The number of signals in the spectrum indicates the number of different proton environments present in the molecule.
舧 DEPT stands for distortionless enhancement by polarization transfer. DEPT
舧 Mass spectrometry is a detection of ions on the basis of weight and charge, and their abundancy after formation of ions.
舧 Mass spectroscopy is a graph with mass (
舧 Molecular ions formed by EI mass spectrometry are high energy species. Fragmentation of molecular ion means that a complex molecule is broken into smaller molecules and these fragments can undergo more breaking.
舧 When infra-red (IR) radiation is passed through a sample, the energy of the IR radiation is absorbed by the particle. Unlike UV-Vis, the electrons don’t jump to higher orbitals instead there is a change in the vibrational energy of the covalent bond, within the molecule.
舧 IR spectroscopy is used to find the functional groups in the molecule.
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EBK ORGANIC CHEMISTRY
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