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(c). Cyclic alcohols may undergo fragmentation by at least three different pathways. Based on the following...
4. Based on the mass spectrum below - which heteroatom (S, Br, or CI) is present in the molecule that produces this spectrum? 100 91 172 Relative abundance 80 M 100 M+1 13 M+2 97 60 40 65 20 0 80 100 120 140160180200 20 40 60 miz
4. Based on the mass spectrum below - which heteroatom (S, Br, or CI) is present in the molecule that produces this spectrum? 100 91 172 Relative abundance 80 M 100 M+1...
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...
zene, C6H6? 12-23 Propose structures for compounds that fit the following data: al A ketone with M+ 86 and fragments at m/z 71 and m/z 43 h An alcohol with M+ = 88 and fragments at m/z 73, m/z 70, and m/z = 59 12-24 2-Methylpentane (C6H14) has the mass spectrum shown. Which peak represents M+? Which is the base peak? Propose structures for frag- ment ions of m/z 71, 57, 43, and 29. Why does the base peak have...
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)...
please show step by step. Thank you
O. Which CsH120 compound gives the following EI mass spectrum? 00 45 80 60 40 20 M (88) 73 0 10 30 40 50 m/z 60 70 80 90 100 Relative Abundance 20
16. A hydrocarbon with a molecular weight of 100 Da (and expected molecular ion at 100 m 2) was analyzed by mass spectrometry and gave the spectra shown below. Based on the MS spectrum and considering possible fragmentation of the hydrocarbon, which of the molecules provided corresponds to this spectrum? 100- m/z = 57 Da Relative Intensity m/z = 85 Da Expected molecular ion (not observed) 10 20 30 40 tillo el origen los 50 60 70 80 90 100...
16. A hydrocarbon with a molecular weight of 100 Da (and expected molecular ion at 100 m 2) was analyzed by mass spectrometry and gave the spectra shown below. Based on the MS spectrum and considering possible fragmentation of the hydrocarbon, which of the molecules provided corresponds to this spectrum? 100- m/z = 57 Da Relative Intensity m/z = 85 Da Expected molecular ion (not observed) 10 20 30 40 tillo el origen los 50 60 70 80 90 100...
I'm not sure how to do the three cationic
structures
b. The following mass spectrum corresponds to a ketone. Determine two possible molecular formulas and their corresponding degrees of unsaturation for the compound. Additionally, provide the cationic structures corresponding to the indicated ions in the table below. Hint: There are a few ketones that have this same mass. Be sure to provide a structure that is reasonable given a base peak at 43 m/z. M+ (amu) C. H and o...
The diagram shown below represents the mass spectrum (MS data) for which of the following compounds? 100 31 80 29 32 60 relative abundance 40 20 0 15 .. 10 20 30 mass/charge ratio (m/z) 0 40 CH3OH CH3CH3 CH3NH2 OCH3CH2NH2 CH3CH2OH
Name: Starting with the mass spectrum of n-heptane What is the molecular ion? What fragment is lost to generate the ion with m/z =71? What cation does the peak at m/z = 43 represent? What group does the spacing between each set of ions represent? Why is the peak at (M-15), corresponding to loss of -CH3 so small? Draw the structure of 2,4-dimethylpentane What is the structure of the ion responsible for m/z = 85? Relative Intensity What is the...