Concept explainers
Interpretation:
The reasonable structure of the compound having a molecular formula
Concept introduction:
For identifying correct structures from the given IR spectrum, the first step is to calculate the IHD from the given molecular formula of a compound. The IHD accounts for the number of rings or multiple bonds the structure could possess. A benzene ring has an IHD of 4, which accounts for the three double bonds plus a ring. The next step would be analyzing the given IR spectrum for:
1) The number of stretching modes (above
Want to see the full answer?
Check out a sample textbook solutionChapter 15 Solutions
Organic Chemistry: Principles and Mechanisms (Second Edition)
- The mass spectrum and 13C NMR spectrum of a hydrocarbon are shown. Propose a structure for this hydrocarbon, and explain the spectral data.arrow_forwardThe 1H and 13C NMR spectra of compound A, C8H9Br, are shown. Propose a structure for A, and assign peaks in the spectra to your structure.arrow_forwardThe following NMR spectra were obtained from a compound with the molecular formula C4H6O. Use this information to predict its structure.arrow_forward
- Assume that you have a compound with the formula C4H8O. a) How many double bonds and/or rings does your compound contain? b) If your compound shows an infrared absorption peak at 1715 cm-1, what functional group does it have? c) If your compound shows a single 1H NMR absorption peak at 2.1 δ, what is its structure?arrow_forwardYou are provided an unknown sample with the molecular formula C8H9NO. After running the IR, you obtain the following spectra. Name and draw the structure of the compoundarrow_forwardA compound contains only C, H and O. The mass spectrum shows peaks at m/z = 58 and 43. What is the structure of the compound?arrow_forward
- These are the 1H RMN and IR spectrums of an A compound with formula C10H13NO2. When A reacts with NaOH in water and heat, B compound is formed, with formula C10H11NO. What are the structures of A and B?arrow_forwardGive the structure for two isomers of molecular formula C4H10O which are consistent with the ^1H-NMR spectra shown below.arrow_forwardProvide the structure for each compound below using the given molecular formula and the 1H NMR spectrum. Justify your answer.arrow_forward
- The H1H1 NMR spectrum shown corresponds to an unknown compound with the molecular formula C6H10C6H10. There are no strong IR bands between 2100 and 2300 or 3250 and 3350 cm−1. Deduce and draw the structure of the molecule that corresponds to the spectrum.arrow_forwardIdentify each of the following compound (C4H8O2) from its molecular formula and its IR and 1H NMR spectra: Note: Offset means: “add “offset to 8 ppm.”Assign the peaks in NMR spectrum. You must indicate clearly the hydrogen/s of the molecule responsible for the peak/s. Cannot write only the structurearrow_forwardPredict the structure of the compound using the information below. Kindly show what information are obtained for each spectra which may help in predicting the structure. From IR Spectra: See the attached picture From Mass Spectra M+ = 87 From Proton and Carbon NMR Spectra See attached picture.arrow_forward
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning