Concept explainers
(a)
Interpretation:
The compound
Concept introduction:
In mass spectroscopy, compounds can be identified on the basis of mass of compound. When the compound breaks into fragment then they can be distinguished from the other compounds. This technique is also used to differentiate the isotopes of compounds. This technique did not interact with
(b)
Interpretation:
The compound
Concept introduction:
NMR spectroscopy is a technique used to determine a unique structure of the compounds. It identifies the carbon-hydrogen bonding of an organic compound. A hydrogen atom is called as a proton in the NMR spectroscopy.
The number of NMR signal in a compound is equal to the number of chemically non-equivalent protons present in that compound. The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region or vice versa.
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Organic Chemistry
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- How could 1H NMR spectroscopy be used to distinguish among isomersA, B, and C?arrow_forwardIf an IR has a long strong peak at 1728cm-1, is it possible that the product is an ester or carboxylic acid(which was the functional group of the starting material)? Or is it possible that there might be the prescence of both?arrow_forwardThe carbonyl absorptions of esters X and Y differ by 25 cm−1. Which compound absorbs at higher wavenumber and why?arrow_forward
- When the 1HNMR spectrum of an alcohol is run in dimethylsulfoxide (DMSO) solvent rather than in chloroform, exchange of the Ο-H proton is slow and spin-spin splitting is seen between the Ο-H proton and C-H protons on the adjacent carbon. What spin multiplicities would you expect for the hydroxyl protons in the following alcohols? (a) 2-Methyl-2-propanol (b) Cyclohexanol (c) Ethanol (d) 2-Propanol (e) Cholesterol (f) 1-Methylcyclohexanolarrow_forwardWould you expect two diastereomers such as meso-2, 3-dibromobutane and (2R, 3R)-dibromobutane to have identical or different IR spectra? Explain.arrow_forwardAscaridole is a natural product that has been used to treat intestinal worms. Explain why the two methyls on the isopropyl group in ascaridole appear in its 1H-NMR spectrum as four lines of equal intensity, with two sets of two each separated by 7 Hz.arrow_forward
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