Concept explainers
Interpretation:
The reasonable structure of the compound having a molecular formula
Concept introduction:
For identifying the 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
2) Look especially for the presence or absence of peaks for
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ORGANIC CHEMISTRY E-BOOK W/SMARTWORK5
- The 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 infrared spectrum of the compound with the mass spectrum shown below has a medium-intensity peak at about 1650 cm-1. There is also a C-H out-of-plane bending peak near 880 cm-1. Propose a structure consistent with the data.arrow_forwardThe mass spectrum and 13C NMR spectrum of a hydrocarbon are shown. Propose a structure for this hydrocarbon, and explain the spectral data.arrow_forward
- The following NMR spectra were obtained from a compound with the molecular formula C4H6O. Use this information to predict its structure.arrow_forwardThe organic compound of FM C3H3Br showing the following signals in its IR spectrum is:arrow_forwardGive the structure for two isomers of molecular formula C4H10O which are consistent with the ^1H-NMR spectra shown below.arrow_forward
- propose a structure with molecular formula of C5H10O3, label also each corresponding peaks on the 1H and 13C NMR spectrumarrow_forwardA molecule produces an IR spectrum with key peaks at approximately 3300 and 2100 cm⁻¹. The mass spectrum has a molecular ion with a m/z = 68, and major fragment with m/z of 39. Draw a structure that best fits this data.arrow_forwardThe mass spectrum of Compound D, with a molecular formula C8H7BrO2 is shown below. Identify and draw the structure of Compound D.arrow_forward
- You 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_forwardIdentify the structure of the compound a having the following IR. Label the spectra with the information you obtain (functional groups). Compound a. Formula: C5H10O2arrow_forwardThe IR spectrum of a compound with molecular formula C5H8O is shown below. Identify the compound.arrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning