A 300-MHz spectrometer records a proton that absorbs at a frequency 2130 Hz downfield(deshielded) from TMS. ) Predict this proton’s chemical shift at 60 MHz. In a 60-MHz spectrometer, how fardownfield (in hertz) from TMS would this proton absorb?

A 300-MHz spectrometer records a proton that absorbs at a frequency 2130 Hz downfield(deshielded) from TMS. ) Predict this proton’s chemical shift at 60 MHz. In a 60-MHz spectrometer, how fardownfield (in hertz) from TMS would this proton absorb?

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

ChapterL4: Proton (1h) Nmr Spectroscopy

Section: Chapter Questions

Problem 12E

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Concept explainers

Analyzing and Predicting Spectroscopic Data

The interaction of electromagnetic radiation with the structure of molecules in the sample and their study is referred spectroscopy. Several spectroscopic methods are used to acquire sample information, and these methods are proved to be accurate, fast, and non-destructive. The information obtained about the content and composition of molecules from these spectroscopic methods is called spectroscopic data.

Question

A 300-MHz spectrometer records a proton that absorbs at a frequency 2130 Hz downfield
(deshielded) from TMS.
) Predict this proton’s chemical shift at 60 MHz. In a 60-MHz spectrometer, how far
downfield (in hertz) from TMS would this proton absorb?

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300-MHz spectrometer records a proton that absorbs at a frequency 2130 Hz downfield(deshielded) from TMS.(a) Determine its chemical shift.(b) Predict this proton’s chemical shift at 60 MHz. In a 60-MHz spectrometer, how fardownfield (in hertz) from TMS would this proton absorb?
In a 300-MHz spectrometer, the protons in iodomethane absorb at a position 650 Hz downfield from TMS. How many hertz downfield from TMS would they absorb at 60 MHz?
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