Use the IR and MS data to elucidate the structures of the compounds below. Identify the...
1. Assign structures for the following molecules given the IR and EI-MS data below: (a) IR shows medium intensity peak at 1650 cm and C-H out-of-plane bending at 880 cm. 56 Relative Abundance M(84) uli 35 40 45 dll 25 30 LL 15 20 . Inlll 50 55 miz 60 65 70 75 80 85 90 (b) IR has a broad peak at 3370 cm and a strong peak at 1159 cm!. The M ion is absent. Relative Abundance (percent)...
Using the NMR, IR, and MS figure out what the compoud is. ** identify the molecular structure througu NMR, IR and MS CHEM 100L Lab 3 NMR Problems Unknown 1 CH 0 M-a 102 Relative Intensity 20 30 40 50 70 80 60 m/z water, not part of sample 1-2975-2877 9H, singlet 2H, 3H, quartet triplet ppm Unknown 2 C,H,O tensity 119 Relative 3200-2600 1680V 3H, singlet 2x 2H, doublet 1H, singlet ppm Unknown 3 C,HO, Relative Intensity 3090 3035...
identify what the molecular structure is through its NMR, IR, and MS Unknown 4 CH 40 Relative Intensity Order 10 20 30 40 50 60 70 80 90 100 110 12965- 2875 1715 6H, triplet 4H, triplet 4H, sextet 10 9 8 7
Use the mass spectrum and either the NMR spectrum or the IR spectrum to deduce the structure of the following compound (c) C8HO3H NMR, 300 MHz, 6.1 ppm (singlet, 2H), 6.9 ppm (doublet, 1H), and 7.3 ppm (singlet, 1H), 7.4 ppm (doublet, 1H), 9.8 ppm (singlet, 1H); significant IR absorbances at 1687, 1602, 1449, 1264, 1038, 929, and 815 cm1. 100 149 (150) 80 60 40 121 63 20 65 91 0 15 20 25 30 35 40 45 50...
assign structures for the following molecules given IR and EI-MS data below: (c) Contains oxygen. IR shows no significant bands above 3000 cm! Relative Abundance M(102) is 2015 30 35 40 45 50 55 60s 70 's 80 es 100 165 (d) IR shows strong peak near 1725 cm! Relative Abundance 1 3 5 llllll 40 45 m/z 50 55 60
3. Find the structure of a compound given the MS, IR, and NMR data below. When you have the solution, use it to determine the correct multiplicity of the signal at 5.1 ppm and explain the coupling pattern. A correct answer with no explanation will receive no credit. MASS 951 FL 100 128 1107 677 r69 r45 50 557 811 130 120 100 110 90 80 70 60 50 mt IR 100 50 2000 Wavenumber (cm-1) 1000 3000 4000 'H...
15. The mass spectrum of a compound appears below. The molecular ion, M+1, and M+2 peaks have intensities of 100, 6.8, and 31.8 respectively. Use the information provided to determine the formula of the compound 100 MS-NW-5495 80 60 40 20 шшшl 110 10 20 30 40 50 60 70 80 90 100 m/z Relative Intensity 15. The mass spectrum of a compound appears below. The molecular ion, M+1, and M+2 peaks have intensities of 100, 6.8, and 31.8 respectively....
Help!!! 3. (34 points total) Below are EI-MS and IR data for an unknown compound: 134 100 106 51 5 Mt 31 39 91 118 150 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 a 3 points) Draw the structure that best fits the data in the box provided.
Identify the important diagnostic peaks from the IR spectrum, including the cm^-1, and the bond that corresponds to each peak. List all possible classes of compounds this compound could be. Does it contain carbon-carbon double or triple bonds? From the mass spectrum and IR, determine the molecular formula and calculate the degree of unsaturation. On the basis of your analysis, propose a structure that fits all the IR, MS, & CNMR data. Propose a structure that corresponds to the base...
2. Below is the MS of 1-methoxypropane. Account for the peak at 45 m/z. Start with the molecular ion. Use curved arrows to show movement of electrons. 4 pts Relative Intensity 0- 10 20 T 30 40 50 60 80 90 100 110 120 70 m/z