Question

Organic Chemistry II Lab: Unknown Identification

QUESTION: Please predict structure based on C13, HNMR, and Mass spectrum provided. Also, label peaks and provide short analysis. Also, my unknown is a solid.

Please answer ASAP

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*PEAK VALUES*:

MASS SPECTRUM

C13:

HNMR:

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SPECTRUMS THAT NEED TO BE ANALYZED TO PREDICT STRUCTURE:

Natural Abundances of Comunon Elements and Their Isotopes % Element Hydrogen Carbon Nitrogen Oxygen Fluorine Silicon Phosphorus Sulfur Chlorine Bromine Iodine H 0.015 13C 1.11 15N 0.36 170 0.04 1H 99.985 12C 98.89 14N 99.64 160 99.76 19F 100 28si 92.23 3iP 100 32S 95.0 35C1 75.77 79Br 50.69 127I 100 5 18O 0.20 3 29Si 4.67 30Si 3.10 33S 0.76 2 34S 4.22 37C1 24.23 81Br 49.31 13C Chemical Shifts C-I C-Br C-CI -CH2 -C C-O -CH3 C-O EC- C-N 200 180 160 140 120 100 8060 40200 Chemical Shift (6. ppm) Mass spectrum Unknown A MASS SPECTRUM 100 80 60 0 40 20 0.0 120 160 80 m/z 0.0 40

Answer 1

compound is biphenyl it has two type of carbon one is occur at 139 and other peak obtained at 128in 13Cnmr and protons gives multiplet in aromatic region

mass spectrum has base peak at 154 other mass fragment gives the peak coressponding to m/Z value