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Which of the following would be expected to have a dipole moment of zero on the basis of symmetry? Explain. a. SOCl2; b. SiF4; c. OF2.
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- Draw a Lewis structure and determine the point group for each of the following molecules. Indicate formal charges for ions. Indicate 3D stereochemistry by drawing solid and hashed bonds. a. XeO3 b. SOF4 c. ClOF2+ d. XeO2F2 e. TeF42-4. Describe an object in nature (not a molecule or ion!) whose symmetry corresponds to each of the following point groups, and give a brief explanation why. а. С, b. C2v C. D4hAssign a point group to each of the following compounds and identify how the Pz orbital on the central atom transforms under that respective symmetry. a. NH2Cl b. BF4 - c. HCN
- 5. Draw the complete MO diagram for BF3. What is the point group? Label the AOs and SALCs and MOS. Draw a sketch for each MO with the appropriate symmetry label. What is the overall bond order? Which orbitals represent the lone pairs? What is the ionization energy in units of eV for BF3?I. Determine the point groups of the following: (found in NH, 1,) D. Tellurium tetrachloride A. Tetrafluoracubane II. Determine the following direct product representations, reducing any reducible ones. 1. On, T1u X Eg D3d, A1g X A2u X Eu 2.1). Which d-orbitals become t, orbitals according to the character table below? Character table for Ta point group Esc, c, 6s, linear, quadratie rotations TOO I R, R. R K. y. ) a. d and d. b. dand d, c. dand d d. d, and d. 2). Which one of the following reactions is incorrect? a. [PtBr.) + 2PR, à trans-[PtBr,(PR,)) + 2Br b. [Pt(NH,)Br] + NH, àcis-[Pt(NH,),Br.] + Br c. [Pt(CH,=CH,)CIJ + NH, àtrans-[Pt(CH,=CH,)(NH,)CIJ + CI d. [Pt(PR,).J" + 2CI à trans-[PICI,(PR,)) + 2PR, 3). What is the crystal field stabilization energy of (Ir(bpy).]^? . а. О b. -2.4Ao + 3P C. -2.4Ao + 2P d. -0.4Ao + P 4). What is the crystal field stabilization energy of (Mn(H,O).}^? (H,O is a weak field ligand) а. 0 b. 2Δο + 2P C. -Ao + 2P d. -Ao +P
- 3. Assign each molecule or ion to its proper point group. a. cyclobutane b. trans-1,3-difluorocyclobutane C. bromoethane d. 1,2-dibromoethane (in the anti conformation)1. Assign the point group to the following molecules. * * co OH2 2+ H3N,,. NH3 Mo H;N co OH2 H20-Co-CI H,0 ÓH2 CO a. b. F H. d. f. Br CI OH CI Br OH g. h.Looking at the reaction , we assume there is no pi bond.Show the molecular orbita diagram with symmetry symbol, (A1, B1 and T2g etc.). Sketch the HOMO of the product after oxygen makes the bond of Fe.
- Using symmetry, TOM and Orbital energy table Atomic, construct the OM Diagram for the following molecule : SCl 2 Identify nonbinding OMs and HOMO and LUMO.Are the circled protons equivalent by symmetry? H YES YES H. OH or or HO H NO NO O I. Yes II. Yes O I. Yes II. No O I. No II. Yes O I. No II. No5. Find all the symmetry elements in H2O and derive its character table (Assume the bases are linear, quadratic functions and rotations; x, y, z, x', y, 2, xy, xz, yz, Rr, Ry, Rz) 6. Find all the symmetry elements in NH; and derive its character table also. 7. (1) Using the x, y, and z coordinates for each atom in XeF4, determine the reducible representation for all molecular motions (2) And reduce this representation to its irreducible components (3) And classify these representations into translational, rotational, and vibrational modes. 8. (1) Using the x, y, and z coordinates for each atom in H20, determine the reducible representation for all molecular motions. (2) And reduce this representation to its irreducible components. 9. (1) Classify these representations of H20 into a translational, rotational, and vibrational mode. (2) Do they have a temporary or permanent dipole moment? Please explain it based on the derived modes. 10. (1) Write the corresponding 9 x 9 transformation…