Principles of Instrumental Analysis, 6th Edition
6th Edition
ISBN: 9788131525579
Author: Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher: Cenage Learning
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Chapter 19, Problem 19.12QAP
Interpretation Introduction
Interpretation:
The difference between longitudinal and transverse relaxation should be stated.
Concept introduction:
Nuclear magnetic reasonance is a technique that is used to predict the structural formula of the compound. NMR spectroscopy involves the examination of the nucleus under the external magnetic field. Relaxation is a radiatioless process that is occurred due to the returning of nuclei from higher energy state to lower energy state. There are two processes, spin-spin relaxation and spin-lattice relaxation.
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4. (2 pts) Draw the structure of the major component of the Limonene isolated. Explain how
you confirmed the structure.
5. (2 pts) Draw the fragment corresponding to the base peak in the Mass spectrum of
Limonene.
6. (1 pts) Predict the 1H NMR spectral data of R-Limonene.
Proton NMR: 5.3 pon multiplet (H Ring
Part VI.
Ca H 10 O is the molecular formula of compound Tom and gives the
in the table below. Give a possible structure for compound Tom.
13C
Signals summarized
C1
C2
C3
C4
C5
C6
C7
13C shift (ppm)
23.5
27.0
33.0
35.8
127
162
205
DEPT-90
+
DEPT-135
+
+
Chapter 19 Solutions
Principles of Instrumental Analysis, 6th Edition
Ch. 19 - Prob. 19.1QAPCh. 19 - Prob. 19.2QAPCh. 19 - Prob. 19.3QAPCh. 19 - Prob. 19.4QAPCh. 19 - Prob. 19.5QAPCh. 19 - A nucleus has a spin quantum number of 7/2. How...Ch. 19 - Prob. 19.7QAPCh. 19 - Prob. 19.8QAPCh. 19 - Prob. 19.9QAPCh. 19 - Why is 133C-133C spin-spin splitting not observed...
Ch. 19 - Prob. 19.11QAPCh. 19 - Prob. 19.12QAPCh. 19 - Prob. 19.13QAPCh. 19 - What is a rotating frame of reference?Ch. 19 - How will E for an isolated 13C nucleus compare...Ch. 19 - Prob. 19.16QAPCh. 19 - Prob. 19.17QAPCh. 19 - Prob. 19.18QAPCh. 19 - Prob. 19.19QAPCh. 19 - Prob. 19.20QAPCh. 19 - Prob. 19.21QAPCh. 19 - Prob. 19.22QAPCh. 19 - Prob. 19.23QAPCh. 19 - Prob. 19.24QAPCh. 19 - Prob. 19.25QAPCh. 19 - Prob. 19.26QAPCh. 19 - Prob. 19.27QAPCh. 19 - Prob. 19.28QAPCh. 19 - Prob. 19.29QAPCh. 19 - Prob. 19.30QAPCh. 19 - The proton NMR spectrum in Figure 19.39 is for an...Ch. 19 - The proton NMR spectrum in Figure 19-40 is for a...Ch. 19 - Prob. 19.33QAPCh. 19 - Prob. 19.34QAPCh. 19 - Prob. 19.35QAPCh. 19 - From the proton NMR spectrum in Figure 19-44,...Ch. 19 - From the proton spectrum given in Figure 19-45,...Ch. 19 - Prob. 19.38QAPCh. 19 - Prob. 19.39QAPCh. 19 - Prob. 19.40QAPCh. 19 - Prob. 19.41QAPCh. 19 - Prob. 19.42QAP
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