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- Which of the structures have a major peak between 1700 and 3000 cm1? (Select all that apply). none of these .CIWhat stretching frequencies (in cm-) are present in the structure below? N. 3100 all of these none of these 3300What stretching frequencies (in cm-¹) are present in the structure below? 1715 1745 1800 CI
- What stretching frequencies (in cm¹¹) are present in the structure below? 3300 none of these 3095 1685 OH all of thesehow do i solve this with the table for inorganic chemistry a) determine the order of the group b) determine irreducible representations for C-O stretching vibrations in the following molecule T = [ ]A1 + [ ]A2 + [ ]E' + [ ]A1'' + [ ]A2'' + E'' c) determine the number of IR active C-O stretching vibrations in the above molecule There are [ ] IR active C-O stretching vibrations. [ ] equals blankThe stretching frequency of C-H bond decrease in the order given below. EC-H(3300 cm) > =CH2 (3100 cm') > -H (2900 cm) Justify it.
- Q2: For the following molecules, determine the number of IR active C-O stretching vibration: a) b) C 柏香子 .CO OC..... CO : Fen OC..... :Fen CI Co Fe-CO OC- OC- C 0 CIThe stretching frequencies for H2, HD, and D2 are 4395, 3817, and 3118 cm-1 respectively. Why? Explain.In the electron paramagnetic resonance spectrum ofthe propyl radical, C3H5, the hyperfine splitting constant is1.45 mT for coupl ing to the protons on the terminal carbonatoms and 0.406 mT for coupl ing to the protons attached tothe central carbon atom. Taking 0= 2.25 mT, use the McConnellequation to estimate the unpaired electron density on eachcarbon atom.
- Compound C6H10O has the infrared spectrum shown below. Draw areasonable structure that is consistent with this data. Please explain work. Calculate the Rvalue first! -This compound has two common functional groups.2) Here is an IR spectrum of one of the molecules below. Which one? Describe what specific features of the IR spectrum allow you to make the assignment. 100 3000 2000 1500 1000 500 Wavenumber, cm1 H3C H3CLCH3 CH3 CH3 CH3 H3C, CH3 H;C. H3C H3C CH3 В CH3 E A D Transmittance, %Meaning of abundance of asymmetric C-H stretching in FTIR?