4. Assume that the characters of a certain reducible representation of the T group arex(E) = 17, x(C3) = 2, x (C) = 5, x(S4) = - 3, x(0) = - 5 orT = 17 2 5 -3 - 5. Determine how many times each IrreducibleRepresentation of T appears in I.%3D%3D5. SAIC Exercise 6.9 How many vibrational modes does an SO, molecule have a) in the planeof the nuclei, b) perpendicular to the molecular plane? c) Classify them by their symmetrytype.

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Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

ChapterL3: Carbon (13c) Nmr Spectroscopy

Section: Chapter Questions

Problem 1E

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Following the pattern of Figure 6.21, work out the correlation diagram for the CN molecule, showing the relative energy levels of the atoms and the bonding and anti-bonding orbitals of the molecule. Indicate the occupation of the MOs with arrows. State the order of the bond and comment on the magnetic properties of CN.
Consider a trigonal bipyramidal molecule XY5. (i) To which point group does this molecule belong? (ii) How many normal modes and how many stretching vibrations will this molecule exhibit? (iii) Determine the irreducible representations of stretching vibrations of this molecule. Clearly show all your work. (iv) Which of these vibrations stretching are IR and which are Raman active? Justify your choice How many normal modes and how many stretching vibrations will this molecule exhibit
Draw the lewis structure and describe the bondong in Cr2(CH3COO)4(H2O)2 using MO theory. In the Raman spectrum an intensive line at 556 cm-1 is observed. Assign this band and calculate the force constant using the approach that only two atoms are involved in this vibration.
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1. List 2 advantages of infrared spectroscopy 2. Explain in detail the work principle of Infrared spectroscopy 3. How many vibrational; modes are there in tetrahedral CH4 molecule 4. Explain out plane and Asymmetrical vibration 5.Explain the principle of operation of UV-Spectroscopy 6. Discuss 2 factors that result in deviation from Beer's law
The structure of [NO3]-is either trigonal planar or trigonal pyramidal draw both possible structures and determine the point group for each. Which irreducible representations represent the translational and rotational modes for each possible structure of [NO3]-? Which irreducible representations correspond to the vibrational modes for each possible structure of [NO3]-? How many degrees of freedom would you expect for each structure of [NO3]-? Calculate T-vibrationaland determine which modes you expect to be IR active for each structure.
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how 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 blank
Please help Orbital and SALC symmetry Methane CH4 --- Point group = Td E, 8C3, 3C2, 6S4, 6σd I. What are the symmetries of the relevant orbital on C? II. What are the symmetries of the SALCs generated from the hydrogen orbitals? III. Use parts I and II to draw an MO diagram for CH4 IV. Use your MO diagram to sketch your prediction of the photoelectron spectrum for CH4
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Suppose we have a molecule in C2v . Is an A2 → B2 dipole transition allowed? If so, with what polarization? Refer to the character table below to guide your thinking. 1. Yes, with x polarization.2. Yes, with y polarization.3. No, because C2v molecules are nonpolar.4. No, because there is no polarization with the right symmetry.5. It is allowed, but only in Raman processes with xz polarization.
Determine the number (and relative intensity) of IR-active C–O stretching vibrations for fac-[Mo(CO)3(NCMe)3]: Proceed as follows... Determine the point group of the molecule. Do not descend in symmetry. Construct a reducible representation for the CO vibrations (ΓCO) -- [please explain how to determine the number of unshifted atoms] Decompose ΓCO into its irreducible representation ΓCO,i.r. Determine which are IR active (number of IR active modes) Double degenerate modes (i.r. with E symmetry) are ≈ twice as intense as other modes, and triply degenerate modes (i.r. with T symmetry) are ≈ three times as intense.

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Assume that the characters of a certain reducible representation of the T group are x(E) = 17, x(C3) = 2, x(C) = 5, x(S4) = – 3, x(0a) =- 5 or T = 17 2 5 -3 - 5. Determine how many times each Irreducible Representation of T appears in r.