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- Calculate the degrees of unsaturation from the molecular formulae provided below. Hint: for S, think about where it is in relationship to other atoms on the periodic table how many bonds can it make?(plz give detail explanation )Identify how IR spectroscopy might be used to monitor the progress of the following reaction. [conc. H,SO,]
- Use the HNMR spectra shown here to determine the structural formula for the unknown cited below. Begin by calculating the degree of unsaturation for the compound. This will help you determine the total number of pi bonds plus rings that are possible for the structure. The table of chemical shift values are provided.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 HydrogenAttempt to rank the following compounds in order of decreasing carbonyl stretching frequency. In other * Please esplein why
- Predict whether the compound is aromatic , anti-aromatic from a list of cyclic molecules given below and explain why? Also circle all the basic nitrogen’s?Proton Hc is the most and the most (, with a chemical shift of approximately. The carboxylic acid proton,, will be the most | and the furthest . The chemical shift of is approximately 11 ppm. Protons on benzene rings usually have a chemical shift of. Electron withdrawing groups cause because the electron density around the nucleus is resulting in a ( chemical shift. На H. H2N. HO H Н. H, deshielded shielded upfield downfield 2.5 ppm 1.0 ppm 7-9 ppm На Не НЬ shielding deshielding decreased increased smaller largerIdentify the mode of ring closure for the given electrocyclic reaction. Also, identify if the the indicated hydrogens are cis or trans.
- , pls solve this with full explanation as fast as possible .Using FMO theory, determine whether a carbanion rearrangement, analogous to the 1,2-hydride shift in Equation D-10, is allowed or forbidden.I understand that the diradical dioxygen attacks a hydrogen on the carbon adjacent to the double bond but can I be shown the resonance mechanism and why we can't use a hydrogen directly from the double bond?