PRINCIPLES OF INSTRUMENTAL ANALYSIS
7th Edition
ISBN: 9789353506193
Author: Skoog
Publisher: CENGAGE L
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Chapter 20, Problem 20.9QAP
Interpretation Introduction
Interpretation:
The reason of double-focusing mass spectrometers gives narrower peaks and higher resolutions than single-focusing instruments.
Concept introduction:
Mass spectrometer is a device which is used to measure the mass and molecular fragment of isotopes and molecules by ionizing the isotopes and molecules.
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When an unknown amine reacts with an unknown acid chloride, an amide with a molecular mass of 163 g/mol (M* = 163 m/z)
is formed. In the infrared spectrum, important absorptions appear at 1661, 750 and 690 cm. The 13C NMR and DEPT spectra
are provided. Draw the structure of the product as the resonance contributor lacking any formal charges.
13C NMR
DEPT 90
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DEPT 135
T
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Draw the unknown amide.
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