1. Please indicate the number of distinct 13C and 'H NMR signals you would expect to see for each of the following compounds. Note: for 'H NMR, do not consider spin-spin splitting/coupling or diastereotopic signals; in other words, a quartet counts as 1 signal in this analysis). Br Br Br Br
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- Define/explain the following with example/s, if any? Characteristics of a good NMR solventLabel the significant peaks in the IR and NMR spectra. When analyzing the signals in the 1H NMR, be sure to include all appropriate information. For example: 3H, singlet, 0 neighbors, and c (the letter referring to the corresponding unique type of hydrogens that were labeled in the structure). It is recommended to provide more analysis for each signal than what is described above, when necessary, such as labeling any coupling constants if any are provided. For 13C NMR label each peak to the corresponding carbon in your suggested structure. Include calculating degrees of unsaturation.What are the important diagnostic peaks in this IR spectra? Fingerprint region <1500cm^-1 is not necessary. Thank you.
- List all peaks and multplicity in this NMR Spectrum in addition to what possible compound it can be.Perform four region analyses by accounting for the presence and absence of bands and give three (at most) possible compounds that will show the following spectra.Give a detailed explanation of how Raman spectroscopy protocol will be used to process a sample of palm oil adulterated with Sudan IV
- The spectrum of trans-hex-2-enoic acid follows.(a) Assign peaks to show which protons give rise to which peaks in the spectrum.(b) Draw a tree to show the complex splitting of the vinyl proton centered around 7 ppm. Estimate the values of thecoupling constants.Describe how you would process palm oil samples adulterated with Sudan IV dye prior to Raman spectroscopy. Explain also how you would go about to analyze the sample using the raman spectroscopy to gain qualitative and quantitative information about the dyeThe 1H NMR spectrum for the commonly employed reactant epichlorohydrin is shown below. Despite featuring only a few signals, this spectrum provides an interesting case of assignment through the use of multiplicities and coupling constants. Can you assign the signals and explain the observed differences in geminal coupling constants?
- Show why the wavenumber frequency for D2 for the symmetric stretch is 2990 cm-1, whereas that of H2 is 4401 cm-1? What does that tell you about the bond strength of H2 relative to that of D2? Hint: D is a heavier isotope of Hydrogen1. True or False a. UV-Vis spectroscopy normally reports data in the from of bands rather than single peaks because of overlapping electronic transitions that are being recorded by the detector. (T/F) b. When using linear regression to translate absorption data using Beer's Law, the y-intercept (+b) of the linear equation represents the path length. (T/F) c. Phosphorescent materials give a glowing effect because the electrons remain at an excited state for much longer, which is the cause for the "glow". (T/F)Propose a structure that is consistent with the following 1H NMR spectra. In each case, the molecular formula is provided. For spectra with numbers at the bottom of the signal you will need to determine the integration, others with numbers above the signal integration has been determined for you.