analyse high resolution proton NMR spectrum and suggest a compound and write its name. Also write down which parts of the molecule belongs to each peak. (max character:60000)

THIS CAN NOT BE HAND DRAWN! MUST USE A COMPUTER or DIGITALLY ILLUSTRATE

Refer to the NMR spectrum below. How many total H's are there in this compound? 2H 3H 2H 11 10 8 5 4 3. 2 1 ppm HSP-02-073

8. Sketch the off-resonance-decoupled 1³C spectra of the following compound. H H C C-H H The splitting pattern of off-resonance decoupled spectrum indicates the number of protons attached to the carbon. 13C nuclei are split only by the protons attached directly to them. The N + 1 rule applies: a carbon with N number of protons gives a signal with N + 1 peaks (e.g. carbon atom with one proton appears as a doublet; carbon with two attached protons gives a triplet etc.) • Carbon atoms with more hydrogens absorb more strongly.

CI (3d) Draw the DEPT-90 and DEPT-135 13C spectra for compound X. Label each carbon peak using your notation from (3a).

The mass spectrum of 2,2-dimethylpropane shows only a very weak molecular ion peak at m/z = 72. However, a large peak at m/z = 57 is seen. Suggest a possible structure of the fragment giving rise to this large peak and suggest a reason as to why this peak is so large.

Explanation/Answer cannot be hand-drawn! Must be typed or illustrated digitally

The following MS spectrum is for a compound which contains one oxygen atom (as well as C and H, of course, but no other atoms). Propose a structure which is consistent with this MS; also identify the species responsible for each peak whose numerical m/z is given (remember resonance!). OP ALTAOSACO b d 100 80 60 40 20 0 0 20 31 40 60 m/z 77 80 91 % (M+1)/M = 7.93 100 107 108 120

Can you explain this nmr