Give the structure that corresponds to the following molecular formula and 1H NMR spectrum: The magenta...

Question

Give the structure that corresponds to the following molecular formula and ¹H NMR spectrum:

chemical shift, Hz

chemical shift ppm, (ð)

The magenta numbers in the spectrum are the relative integrals in arbitrary units.

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NMR is a form of nuclear magnetic resonance (NMR) spectroscopy. It is a technique that uses spectroscopy employed to determine the chemical structure or their bonding sequences and also the purity of the compound. The Proton (or the H) NMR is used to examine the signals that are produced by the hydrogen contained within the molecule, which are displayed in spectrum. NMR is employed in numerous circumstances, but is commonly used in the process of synthesizing new compounds or purifying or separating compounds to ensure the high purity.

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Oliver Jones · Accepted Answer

Concepts and Reason

¹H NMR Spectroscopy:

Nuclear magnetic resonance (NMR) spectroscopy is one of the techniques in the analytical chemistry that is widely used to determine the purity of sample and to predict the structure of the organic compounds.

The spectrum is phenominal. It is when frequency of nuclei in atoms (sample), resonates with frequency magnetic field.

Spectroscopy determines the different types of hydrogens (chemically non-equivalent hydrogens) present in a molecule.

Fundamentals

¹HNMR Spin-Spin Coupling Designs:

Number of hydrogens that are chemically non-equivalent to each other n	Number of peaks ()	Splitting Name	Ratio of peak heights
0	1	Singlet
1	2	Doublet
2	3	Triplet
3	4	Quartet

Here's how to calculate the degree unsaturation

The spectral data is given below:

Chemical shift	Multiplicity
Around 0.9ppm	Triplet
Around 1.38ppm	quartet
Around 1.42ppm	Singlet

Chemical shift - 1.42ppm: The spectra shows quartet at 1.42ppm is due to the splitting of three hydrogens attached to carbon and there are three identical methyl groups.

Chemical shift - 1.38ppm: The singlet peak is observed at 1.38ppm disappear after shaking with proton at group of tertiary alcohol.

Chemical shift - 0.9ppm: The spectra shows triplet at 0.9ppm is due to the splitting of two hydrogens attached to carbon shows this peak and three identical ethyl groups.

The compound therefore has one alcoholic and three identical groups attached the the tertiary atom of carbon.

Below is the structure of the compound, with an assignment of chemical shifts values.

Ans:

The structure of the organic compound given is

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