1. For each of the following molecules, list the symmetry elements present and assign its point group. (a) CH3 Cú (assume planar, ignore Hs) H3C (b) SFSC1 (c) BFCIB (planar molecule) (d) CI Ch `CI (e) NH3 CHPt-CI NH3 (f) NH3 CHPt-NH3 CI
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- Structural isomers can have very different point groups. There are three isomers of dichlorobenzene. Identify the point groups of the three isomers.Determine the point group of the following molecules. a cis1,2 Dichloroethylene b trans1,2 Dichloroethylene c Toluene, C6H5CH3 d 1,3-Cyclohexadiene.In your own words, explain why an object that has more symmetry elements is said to have higher symmetry than an object with fewer symmetry elements.
- 1. For each of the following molecules, list the symmetry elements present and assign its point group. (a) CH3 Cu (assume planar, ignore Hs) H3C (b) SF3C1 (c) BFCIB (planar molecule) (d) CI NH, CHPL-Cl NH3 (f) NH3 CH Pt NH3 CI1. For each of the following molecules, list the symmetry elements present and assign its point group. (а) CH3 Cú (assume planar, ignore Hs) H3C (b) SFSCI (c) BFCIBr (planar molecule) (d) CI `CI (e) NH3 CHPT-CI NH3 (f) NH3 CHPt-NH3 CIConsider 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…
- (a) Complete the following table: Molecule/lon Geometry of molecule Key symmetry elements Point group B(F)(CI)(Br) [S203]²1. 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(c) An octahedral cluster molecule E6 in Oh point symmetry can be formed without a central atom and is bonded together using the six s and eighteen p orbitals on the six atoms. Each vertex comprises a sp hybrid orbital (radial) pointing into the cluster, and two p orbitals (tangential) at right angles to each other and to the centre of the cluster (see figure below). These are the same as the ligand orbitals used in o- and x-bonding in octahedral transition metal complexes. The bonding overlaps between these orbitals are shown below in A, B and C, and two of these are each part of a triply degenerate set and the other is singly degenerate - remember in O₂ symmetry x, y and z are degenerate. E E E E two tangential p orbitals B The reducible representation for these bonding orbitals is: radial sp orbital Oh E 8C 6C₂ 6C 3C₂ i 684 8S6 30h Ibonding 7 1 -1 1 -1 1 1 11 (i) Determine the three irreducible representations for the orbitals that contribute to cluster bonding to form the seven…
- Draw 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.(b) Using appropriate diagram(s), show which of the symmetry operation(s) does the [SO4]2- ion have: (i) C4 (ii) σh (iii) S4Draw the shape of the [XeF5]- 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 [XeF5]- ion? (iii) Using the [XeF5]- as an example, show that Cnn ≡ E.