Organic Chemistry (9th Edition)
9th Edition
ISBN: 9780321971371
Author: Leroy G. Wade, Jan W. Simek
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 13.5A, Problem 13.1P
In a 300-MHz spectrometer, the protons in iodomethane absorb at a position 650 Hz, downfield from TMS.
- a. What is the chemical shift of these protons?
- b. What is the chemical shift of the iodomethane protons in a 60 MHz spectrometer?
- c. How many hertz downfield from TMS would they absorb at 60 MHz?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
In a 300 - MHz spectrometer, the protons in iodomethane absorb at a position 650 Hz downfield from TMS
a. What is the chemical shift of these protons ?
b. What is the chemical shift of the iodomethane protons in a 60- MHz spectrometer?
c. How many Hertz downfield from TMS would they absorb at 60 MHz?
In a 360-MHz spectrometer, the protons in iodomethane absorb at a position 650 Hzdownfield from TMS.(a) What is the chemical shift of these protons?(b) What is the chemical shift of the iodomethane protons in a 60-MHz spectrometer?(c) How many hertz downfield from TMS would they absorb at 60 MHz?
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?
Chapter 13 Solutions
Organic Chemistry (9th Edition)
Ch. 13.5A - In a 300-MHz spectrometer, the protons in...Ch. 13.5B - Prob. 13.2PCh. 13.6 - Determine the number of different kinds of protons...Ch. 13.6 - Prob. 13.4PCh. 13.7 - Draw the integral trace expected for the NMR...Ch. 13.7 - Prob. 13.6PCh. 13.8C - Draw the NMR spectra you would expect for the...Ch. 13.8D - Draw the NMR spectra you expect for the following...Ch. 13.8D - a. Assign protons to the peaks in the NMR spectrum...Ch. 13.8D - Prob. 13.10P
Ch. 13.8D - Two spectra are shown. Propose a structure that...Ch. 13.9 - Prob. 13.12PCh. 13.9 - The spectrum of trans-hex-2-enoic acid follows. a....Ch. 13.9 - Prob. 13.14PCh. 13.9 - Prob. 13.15PCh. 13.10 - Prob. 13.16PCh. 13.10 - If the imaginary replacement of either of two...Ch. 13.10 - Predict the theoretical number of different NMR...Ch. 13.11B - Prob. 13.19PCh. 13.11B - Prob. 13.20PCh. 13.11B - Prob. 13.21PCh. 13.11B - Prob. 13.22PCh. 13.11B - Prob. 13.23PCh. 13.11B - Prob. 13.24PCh. 13.12E - Draw the expected broadband-decoupled 13 C N M R...Ch. 13.12E - a. Show which carbon atoms correspond with which...Ch. 13.12E - Repeat Problem13-25, sketching the...Ch. 13.12F - Prob. 13.28PCh. 13.13 - A bottle of allyl bromide was found to contain a...Ch. 13.13 - A laboratory student was converting cyclohexanol...Ch. 13.14 - Sets of spectra are given for two compounds. For...Ch. 13 - An unknown compound has the molecular formula C 9...Ch. 13 - Prob. 13.34SPCh. 13 - Predict the approximate chemical shifts of the...Ch. 13 - Prob. 13.36SPCh. 13 - Prob. 13.37SPCh. 13 - Prob. 13.38SPCh. 13 - Prob. 13.39SPCh. 13 - Prob. 13.40SPCh. 13 - For each compound shown below. 1. sketch the 13 C...Ch. 13 - Prob. 13.42SPCh. 13 - Prob. 13.43SPCh. 13 - Prob. 13.44SPCh. 13 - Prob. 13.45SPCh. 13 - Prob. 13.46SPCh. 13 - A compound was isolated as a minor constituent in...Ch. 13 - Prob. 13.48SPCh. 13 - The three isomers of dimethylbenzene are commonly...Ch. 13 - a. Draw all six isomers of formula C 4 H 8...Ch. 13 - Prob. 13.51SPCh. 13 - Hexamethylbenzene undergoes free-radical...Ch. 13 - Each of these four structures has molecular...Ch. 13 - Prob. 13.54SPCh. 13 - Phenyl Grignard reagent adds to 2-methylpropanal...Ch. 13 - Prob. 13.56SP
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- give the mass spectroscopy interpretation of the peaks Propan-1-amine / Propylaminearrow_forward300-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?arrow_forwardHow does the operating frequency in NMR spectroscopy compare with the operating frequency in IR and UV/Vis spectroscopy?arrow_forward
- 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?arrow_forwardIdentify the important peaks in the following MS spectral data and draw the structure of the important peaks in the following MS spectral data.arrow_forwardIn the HNMR spectrum shown below: A. Signals “a” and “b” appear at different chemical shifts. Why is this so? B. Which proton, 1 or 2, matches signal “a”? C. Why do both signals have the same intensities?arrow_forward
- The methyl protons in acetaldehyde appear at a shift of 2.20 ppm, while the aldehydic proton appears at 9.80 ppm. In a 60 MHz NMR with an external field of 1.5 T, what is the magnetic field experienced by each type of proton? Explain why the presence of 3 protons on the adjacent carbon split the aldehydic proton peak into a quartet.arrow_forwardCan you help me analyse this spectrum tests? The unknown compound has a BP of 102, %C is 68.54, and %H is 8.66. The given test is FTIR.arrow_forwardAlthough 2,2-dimethylhexane has a molecular weight of 114, no peak is observed at m/z = 114. The base peak in the mass spectrum occurs at M-57 (a) Draw the fragmentation responsible for the formation of M-57 ion (b) Explain why this cation is the most abundant ion to pass through the spectrometer. (c) Explain why no molecular ion survive long enough to be detected. (d) Can you offer an explanation as to why M-15 peak is not the base peak?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage LearningMacroscale and Microscale Organic ExperimentsChemistryISBN:9781305577190Author:Kenneth L. Williamson, Katherine M. MastersPublisher:Brooks Cole
Organic Chemistry: A Guided Inquiry
Chemistry
ISBN:9780618974122
Author:Andrei Straumanis
Publisher:Cengage Learning
Macroscale and Microscale Organic Experiments
Chemistry
ISBN:9781305577190
Author:Kenneth L. Williamson, Katherine M. Masters
Publisher:Brooks Cole
Mass Spectrometry; Author: Professor Dave Explains;https://www.youtube.com/watch?v=hSirWciIvSg;License: Standard YouTube License, CC-BY