Question

Construct a simulated 1H NMR sConstruct a simulated 1H NMR spectrum, including proton integrations, for ClCH2CHCl2. Drag the appropriate splitting patterns to the approximate chemical shift positions; place the integration values in the small bins above the associated chemical shift. Splitting patterns and integrations may be used more than once, or not at all, as needed. Likewise, some bins might remain blank. Note that peak heights are arbitrary and do not indicate proton integrations.pectrum, including proton integrations, for ClCH2CHCl2. Drag the appropriate splitting patterns to the approximate chemical shift positions; place the integration values in the small bins above the associated chemical shift. Splitting patterns and integrations may be used more than once, or not at all, as needed. Likewise, some bins might remain blank. Note that peak heights are arbitrary and do not indicate proton integrations.

Answer 1

Answer:

Check the explanation

Explanation:

The concept used in this problem is based on Nuclear magnetic resonance $\left( {^{\rm{1}}{\rm{H NMR}}} \right)( 1 HNMR)$ spectroscopy. The peaks in the ${\rm{NMR}}NMR$ spectrum are used to identify the structure of the compound.

First, identify the number of signals of a given compound. After that assign the values of the chemical shift to identified signals in the spectrum.

Fundamentals

Principle of $^{\bf{1}}{\bf{H NMR}}$ spectroscopy:

The principle of $^{\rm{1}}{\rm{H NMR}}$

is that when the external magnetic field is applied, the energy is transferred from ground state to higher energy level and when the spin returns to ground state absorbed radio-frequency is emitted at the same frequency, that radio-frequency give the spectrum of the nucleus.

Chemical shift:

It is the difference between the resonance frequency of observed proton and tetramethylsilane $\left( {{\rm{TMS}}})$ . ${\rm{TMS}}$ is used as a reference in ${\rm{NMR}}$spectroscopy. The chemical shift of ${\rm{TMS}}$ is ${\rm{0 ppm}}$ .

Spin multiplicity:

The formula to calculate spin multiplicity is n + 1n+1 , here nn is a number of hydrogens of neighboring carbon.

Interpretation of the spectrum:

• Firstly identify the different type of signals (protons).

• Look at the multiplicity, it tells the number of protons of neighboring carbon.

• Then see the position of the peaks, identify the chemical shift.

Some of the values of the chemical shift of $^{\rm{1}}{\rm{H NMR}}$ are given as seen in the attached image below.