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- The nitrogen rule of mass spectrometry says that a compound containing an odd number of nitrogens has an odd-numbered molecular ion. Conversely, a compound containing an even number of nitrogens has an even-numbered M+ peak. Explain.Draw the molecular ion (M*) for this molecule formed in the mass spectrometer. :0: HIn a mass spectrum, what m/z value would correspond to the fragment shown below?
- How can I interperet this mass spectrometry?Draw the molecular ion (M*) for this molecule formed in the mass spectrometer. - e- Drawing1. Which one of the given compounds is consistent with the mass spectrum below? 100 40 20 10 20 25 30 35 40 5o 55 45 60 65 70 75 m/z Courtesy of SDBS: National Institute of Advanced Industrial Science and Technology A. CH,CH,CH(CH,), В. CH,CHOHCH,CH, C. CH,CH,OCH,CH, D. CH,CH,NHCH,CH, E. CH,CH,CH,CH, Relative htensity
- Draw the molecular ion (M+) for this molecule formed in the mass spectrometer. I - e- Drawing :0: ОН QWhich one of the following statements is not true? O In mass spectrometry, the initially formed radical cation can sometimes survive and appear as a peak on the mass spe O Visible light is higher in energy than infrared light. O In mass spectrometry the peak corresponding to an ethyl cation fragment would appear at m/z 30. O In mass spectrometry, a benzylic cation would appear at m/z 91. O In IR spectroscopy, a C-O bond stretch would appear at a lower cm1 than a C=O bond stretch. %23 $ & 8 2 3 4 6 8 Q E R T. Y 4 5 2 K D G H. C || N M. altthe mass spectrum, IR and 13 C and 1 HNMR spectra for an unknown organic molecule. Determine the structure ofthe molecule.
- Consider the mass spectrum below. 100 80- 60- 20 0.0- 0.0 60 100 miz SDBS, National Institute of Advanced Industrial Science and Technology Which peak is the molecular ion? Choose one OA OB OD. OG1. What is the molecular ion peak in a mass spec represent? 2. What is the base peak in the mass spec? 3. In the space below differentiate between a mass spec of a compound with one chlorine and a compound with one bromine. Chlorine BromineModel 3: Ionization and Fragmentation Most mass spectrometers accelerate a molecule by first turning it into an ion, then using an electric field to accelerate it toward the detector. During standard ionization, a molecule loses one electron, the electron that is easiest to remove. The following is a hierarchy of electrons from easiest to hardest to remove: Electron in a lone pair (easiest) Electron that is part of a double bond (pi bond) Electron in a single bond (hardest) Knocking off an electron to make a +1 ion can be a harsh process. This harsh treatment often results in a broken bond, generating two smaller pieces, a +1 ion and a neutral fragment. (Note that only the ion is accelerated and detected.) ● 7. ● Critical Thinking Questions 6. If acetone is ionized, which electron is most likely to be knocked off? Replace this electron with a + (to indicate the missing electron) on the structure of acetone → The ion you drew above is called the "molecular ion" of acetone. It is…