Home/ Questions/Provide a structure for the following compound: C6H12O2: IR: 1743 cm-1; 1H NMR spectrum:
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Asked: 2022-04-13T08:16:40+00:00 In:

Provide a structure for the following compound: C6H12O2: IR: 1743 cm-1; 1H NMR spectrum:

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Provide%20a%20structure%20for%20the%20following%20compound:%20C6H12O2:%20IR:%201743%20cm-1;%201H%20NMR%20spectrum:

Provide a structure for the following compound:
C6H12O2:
IR: 1743 cm-1;
1H NMR spectrum:
                                                           chemical shift, Hz

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                                                            chemical shift, ppm (δ)
♦ Relevant knowledge

Nuclear magnetic resonance, also known as NMR also known as spectroscopy, is a spectroscopic method that is built on the magnetic properties of nuclear nuclei. This technique is used to study the structure of organic compounds in particular 1H NMR as well as 13C NMR spectroscopy.

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    Concepts and Reason

    1H NMR Spectroscopy:

    It’s used to identify organic compound structures. This tool uses an external magnetic field to determine the different types of hydrogens present in a molecule.

    Infrared Spectroscopy:

    Infrared spectroscopy can be used to identify the functional groups within chemical compounds. This is also known as vibrational spectroscopy. A compound with covalent bonds absorbs electromagnetic radiation at a variety of frequencies in the infrared area of the electromagnetic spectrum. IR radiations are found in the wavelength range 400 – 800 nm.

    Fundamentals

    1HNMR Spin-Spin Coupling Designs:

    Number of neighboring hydrogens (chemically non- equivalent) n 0 Number of peaks (n+1) Splitting Name Peak heights ratio 2 Si

    The degree of unsaturation

    1_2C+N-H-X+2 where, Degree of unsaturation is DoU. The number of carbons is C. The number of nitrogen is N. The number of hyd

    The mathematical equation that calculates the IR wavenumber

    1 2Nc

    Where,

    Wavenumber absorption =

    Velocity of light =

    Force constant =

    Reduced mass =

    Frequency and range of absorption in IR:

    absorption Functional group Range of (cm) 2800-2900 3400-3600 1640-1680 3020-3100 2100-2250 3300 2200-2250 Alkane(C-H) Alcoho

    Given molecular formula: C,H,O, DoU = 2x6+0-12-0+2 Dou = 12–12+2 DoU = ? DoU = 1 (It has one double bond)

    Molecular Formula =C,H,O, IR Frequency = 1743 cm Ester Functional Group, RCOOR=1750-1735 cm

    Numbe 2H From the given H NMR spectra : Chemical shift Around 4 ppm (most deshielded) Around 2.3 ppm Around 1.6 ppm Around 1

     

    The correct structure is for most deshielded hydrocarbons with triplet.

    H3C—CH2—6—0- CH2-CH2-CH3

    Mention multiplicity and number of hydrogens: 2H, 2.3 ppm o 2H, 1.6 ppm H3c7ichz—0–CH2CH2 CH3 3H, 1.1 ppm 2H, 4.0 ppm 3H, 0.9 Ans:

    The structure of the organic compound given is

    H3C-CH2-6-0- CH2-CH2-CH3

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