spectroscopy
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What is used as the standard reference for chemical shift measurements?
TMS , (CH3)4Si as it gives a chemical shift value of 0ppm.
What is a deuterated solvent and give some examples.
Deuterium will produce no NMR signal in the frequency ranges of carbon and proton NMR. CDCl3 is an example.
What does an integration trace tell us?
The number of protons responsible for each peak.
What can proton nmr tell us?
• The number of proton environments • The relative number of each type of proton • The number of non-equivalent protons adjacent
How are hydroxyl and amino protons identified?
D2O will replace -NH and -OH with deuterium atoms causing the peak to disappear an signifying its presence
What can a splitting pattern tell us?
The number of protons attached to the adjacent carbons.
What do you need to know to find out a structure from the proton nmr data?
Relative peak area [ratio], ppm, splitting pattern, adjacent carbon, types of proton and analysis