Please use formula and spectra to determine the structure of the compound. MS sp
ID: 938107 • Letter: P
Question
Please use formula and spectra to determine the structure of the compound.
MS spectrum in which you identify the formula, propose at least one other candidiate structure (besides the one you chose as your answer), and identify any fragmentations you wish to include as supporting evidence.
the IR spectrum in which you identify what characteristics of the spectrum lead you to conclude that your assigned structure is correct. You should assign peaks in the spectrum to functional groups found in the proposed structure.
the 13C NMR spectrum in which you match the peaks in the spectrum to the carbon atoms in the proposed structure.
the 1H NMR spectrum in which you match the peaks in the spectrum to the protons in the proposed structure.
100 Mass Spectrum 91 60t M+ 198/200 20t CgH11Br 9 11 40 80 120 160 200 240 280 mleExplanation / Answer
The formula C9H11Br indicates the presence of aromatic ring in the compound
The base peak at 91 indicates the presence of a benzyl peak
The IR peaks above 3000 indicates the aromatic C-H bonds
Peaks at 2987 & 2978 suggests methylene C-H streches
1H NMR with a multiplet of 5 H's at 7.0ppm confirms themonosubstituted benzene protons
Three multiplets of 2H's each confirms the presence of three -CH2- units
Therefore the structure of compound is
Ph-CH2-CH2-CH2-Br (1-bromo-3-phenyl propane)