What would be the partial interpretation (concerning the number of chemically equivalent hydrogen atoms in a molecule) of a triplet which integrates for 2 H and is located at 2.5 8 in the NMR? For this question, consider only the integration of the peak. CH2 2 equivalent CH2 2 equivalent CH CH CH3
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- 21, Provide a molecular formula that is consistent with the following mass spectral data. M+• at m/z = 73, relative height = 86.1% (M+1)+• at m/z = 74, relative height = 3.2%1. Assignment of the molecular ion peak 2. Determination of elemental composition using isotope peak intensities 3. Does your elemental composition conform to the nitrogen rule? 4. List functional groups as identified on the IR spectrum accompanied by their corresponding wavelengthWhat would be the multiplicity associated with peak 2?
- The molecular weight for His is 155.1546. At what mass would you observe the positive ion peak for His in the protonation state with a +2 charge in an ESI-mass spectrum?Analyze the HNMR for the molecular formula C8H8O3 (vanillin). Propose a table that includes chemical shifts, coupling constant, integration for each peak, assignment of each proton. (assign on structure as well)Draw the fragmented molecular ion for the compound shown above for peaks 127,144 and 159. Thank you.
- QUESTION: Explain the changes/ lack in the peak position and molar extinction coefficient as a function of con. for NiCl2.6H2O. Can you explain what this question is asking for me to do without context?What hydrocarbons that contain a six-membered ring will have a molecular ion peak at m/z = 112?Below is the 1 HNMR spectrum of a racemic mixture of 2R-3R-3-nitro-2-butanol. To identify the different multiplet types present, the coupling constants connected to each peak, and the connections between the protons, use splitting tree diagrams. You should emphasise which CH group pairs with each of the CH3 groupings in particular. Which protons bind to which atoms in the structure below?
- Annotate the HNMR peak for 1.085, 4.046, 6.155, 68.57, 8.763a) Predict the proton spectrum chemical shift, coupling and integration of the following molecule? vanillin C8H8O3 b) Also predict its cross-peaks in COSY and 1H-13C HETCOR?Propose a structure for the HNMR data below and come up with a table that denotes the different protons to their respective integration, multiplicity and J values (ppm).