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- (b) Using appropriate diagram(s), show which of the symmetry operation(s) does the [SO-]²" ion have: (i) C4 (ii) ơh (iii) S4.Using appropriate diagram(s), show which of the symmetry operation(s) does the [SO4]2- ion have: (i) C4 (ii) σh (iii) S4.(a) Draw the orbital picture for :C=0: showing the explicit overlap of the contributing AOs. (b) How many MOs of T symmetry are there in total? (c) Draw the orbital energy diagram for CO and identify the HOMO and LUMO.
- (a) Complete the following table: Molecule/lon Geometry of molecule Key symmetry elements Point group B(F)(CI)(Br) [S203]²Draw the shape of the [XeFs] ion and answer the questions below: (i) List the symmetry elements and the symmetry operations of the [XEF5] ion. (ii) What is the point group of the [XeF5] ion? What is the order of the point group of the [XeFs] ion? (iii) Using the [XeF5] as an example, show that C" = E.1. Using VSEPR, determine the shape of the molecules, symmetry elements/operation and assign the point group: (a) CCI4 (b) H2C=CH2 (c) CO2 (d) Co,2
- Consider the three following molecules and answer the questions below.HC≡CHH2C=CH2H3C-CH3 (3 conformers with different symmetry)(a) For each molecule, including all conformers as indicated, draw the molecule, assign it toits point group, and draw on the diagram the symmetry elements that were used to makethe assignment. State in each case whether or not the species is dipolar and/or chiral.(b) If one hydrogen atom in each molecule is substituted by a chlorine atom, sketch the newmolecules and assign them to their point group. For this set of mono-chloro compounds: state the most common point group state how many are chiral state how many are dipolar state which molecule/conformer has the highest symmetry point group state which molecule/conformer has the lowest symmetry point group identify which of these molecules/conformers have three different H atomenvironments(c) For the dichlorinated versions of the molecules/conformers considered in part (a): state the most common point…identify the symmetry elements for each isomer of Ma3b2.Draw the shape of the [XeF5]- ion and answer the questions below: (ii) What is the point group of the [XeF5]- ion? What is the order of the point group of the [XeF5]- ion?
- 6) Given below are the molecule BH3, its character table, and its molecular orbital diagram. By convention, the z-axis lies along the principal rotation axis: (a) What Mulliken symbol represents the symmetry of the MOs I-V? (b) Which of the given atomic orbitals on boron would match the MOS I-V? (c) Depict the in-phase (bonding) and out-of-phase (anti-bonding) of these MOS. B 2p orbitals B 2s orbitals II H 2s orbitals D₂ A, A₂' A," E" 1 1 2 1 1 2 2C, 3C₂ 0₂ 25, 1 1 1 1 1 -1 1 -1 1 -1 0 1 2 -1 -1 30, 1 1 -1 R₂ -1 0 -1 -1 -1 1 1 0 (x, y) (R., R.) x+y²,2² (x²-y, xy) (xz, yz)(ii) Draw a pz and a d¿? orbital and assign their point groups. 88 品B) Identify all the elements of symmetry of IrCl(CO) [P(C6H5)3]2 and the point group assignment. PPH3 B CI- C=O Ph3P