Concept explainers
PRACTICE PROBLEM 14.15
Four benzenoid compounds, all with the formula
A, 740
B, 800
C, 680
D, 693
Propose structures for A, B, C, and D.
Want to see the full answer?
Check out a sample textbook solutionChapter 14 Solutions
Organic Chemistry
Additional Science Textbook Solutions
Campbell Biology (11th Edition)
Living By Chemistry: First Edition Textbook
Anatomy & Physiology (6th Edition)
Chemistry (7th Edition)
Chemistry: An Introduction to General, Organic, and Biological Chemistry (13th Edition)
Genetic Analysis: An Integrated Approach (3rd Edition)
- Determine the structure of the organic molecule which has a molecular formula C10H14 and produces this data:arrow_forward11-Explain why 2-chloropropene shows signals for three kinds of protons in its 1H NMRspectrum? Draw the structure and predict the approximate values for 1H-NMR spectra.arrow_forwardThe answers are: (a) 2 (b) 4 (c) 3 (d) 2 (e) 6 (f) 7 My question is: how to arrive at the answers and what should I be looking for when solving these? What's the procedure?arrow_forward
- Explain why 2-chloropropene shows signals for three kinds of protons in its 1H NMRspectrum? Draw the structure and predict the approximate values for 1H-NMR spectra.arrow_forwardAccount for the following observations: (a) The 1H NMR spectrum of cyclohexane shows a single peak at room temperature, but when the temperate is lowered significantly the peak starts to broaden and then separates into two. (b) At room temperature, the 19F NMR spectrum of PF5 shows two lines, and even at the lowest experimentally accessible temperatures the spectrum is substantially unchanged. (c) In the 1H NMR spectrum of a casually prepared sample of ethanol a triplet and a quartet are seen. These multiplets show additional splittings if the sample is prepared with the careful exclusion of water.arrow_forwardThe following picture illustrates the molecular structure of prapanal (A) and propanone (B). H. H O H Н—С. -С—С—Н Н—С- -С—н H H (A) (B) Explain briefly, if infrared-spectroscopy is the appropriate technique to distinguish the molecules.arrow_forward
- ( do 9 barrow_forwardExplain the appearance of the 1H-NMR spectrum of 1,1,2-trichloroethane. How many signals would you expect, and into how many peaks will each of the signals be split?arrow_forward(d) Identify the structure, assign peaks, and J values for an organic compound C4H30 with NMR. (CDC13, 400 MHz, 300 K) values at d =1.01 (t), 1-56 (m), 2.47 (m), 3JHH =2.7 Hz and 3J, 2.73 (m), 2.88 (m). = 4.0 Hz. HHarrow_forward
- chromophores as (b) Identify the indicated NMR entiotopic/diastereotopic/homotopic magnetically equivalent or non-equivalent. as well as CH₂ H CH3 HOCHI HH₂C (c) A tri-substituted benzene possessing one bromine and two methoxy substituents exhibit three aromatic resonances at d = 6.40, 6.46, and 7.41 ppm. Identify the substitution pattern.arrow_forward- (a) Compounds A and B having identical molecular formula C4H80 have the following C signals at d= 7 ·87, 29.43, 36. 87, 209· 28 ppm and 8 = 13·71, 15.69, 45· 85 and 202·80, respectively. DEPT gave a single-inverted peak for A and two inverted peaks for B. Predict the two structures of A and B, assign peaks and identify the functional groups. 13 %3Darrow_forwardDraw the structural formulas of the following compounds and indicate the number of NMR signals that would be expected for each compound. (a) methyl iodide (b) 2,4-dimethylpentane (c) cyclopentane (d) propylene (propene)arrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage LearningMacroscale and Microscale Organic ExperimentsChemistryISBN:9781305577190Author:Kenneth L. Williamson, Katherine M. MastersPublisher:Brooks Cole