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Explain Diels-Alder mechanism. Include something about MO theory and include an image with a mechanism describing what is going on.
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- 1- Order the highest to lowest frequency of vibration in the infrared (IR) region of the following infrared groups, justifying the answer based on infrared spectroscopy.e. Now draw a MO diagram for NH3 molecules based upon the symmetries of N and three H atom. When you draw the Mos, please consider MO levels relative to individual AOs due to their different contributions. f. What is the bonding order for NH3 molecule based upon the MO diagram from (e)? g. Is NH3 paramagnetic or diamagnetic? Why? h. On the MO diagram, identify the HOMO and LUMODraw a Morse potential for a diatomic representing a bonding MO and one representing an antibonding MO.
- 2. According to the Beer-Lambert law absorbance is proportional to concentration at each wavelength. In principle, one could choose any wavelength for quantitative estimations of concentration. However, we generally select the wavelength of maximum absorbance for a given sample and use it in our absorbance measurements. Especially, one should avoid the steep portions of the spectrum. Why? 3. Which concentration range a dilute or a concentrated one - is chosen for accurate determinations of unknown concentrations?SYMMETRY. Given the following fluoride compounds: NF3, BF3, ClF3 a.) Can IR spectroscopy be used to distinguish between these gases? b.) Explain by doing symmetry analysis and find out all the vibrational modes, which ones are IR active? Which ones are Raman active?Molecules of AsF3 are polar while molecules of AsF5 are not. Use a symmetry argument to explain why. Note: Please briefly explain, Thank you.
- d. While zinc(1) exists only as Zn3" , zinc(II) is found as the monatomic Zn?*. Explain why the diatomic zinc(II) species, Zn does NOT exist while the diatomic zinc(1) species, Zn" , does. e. Why can the d-orbitals safely be ignored for the construction of this MO diagram?Draw one all-bonding MO, thena pair of degenerate MOs, and then a final pair of degenerate MOs. Draw the energydiagram, fill in the electrons, and confirm the electronic configurations of the cyclopentadienyl cation and anionNO3- (d3h) MO diagram.. needed in irreducible form
- 1. Below are two views of the triflate anion, CF3SO3−. a. Using the conventions learned in class, draw the following: i. A cartesian coordinate system. Indicate which view your coordinate system corresponds to. ii. The principal axis of rotation. Give the axis using the proper notation for symmetry elements. iii. One of the mirror planes. Name the mirror axis, including the name of the cartesian plane. b. List ALL unique symmetry operations present for triflate. You do not need to include redundant ones (e.g. since, C33 = E, you do not need to include C33). c. What is the point group of triflate?Can you just explain this more in-depth? I don’t understand why the lone pair is in a p orbital at the top but not at the bottom? Maybe I need to brush up on MO theory but I don’t get what the criteria is to determine that.a) Draw the open structure of BH2CL. (At. No of B: 5) b) Predict the symmetry species of IR absorption bands. c) Draw a descriptive MO energy diagram and assign the HOMO & LUMO