Using your molecular models and the Computer Spredsheet Templates for the character tables, determine the number of Infrared and Raman active bands for each of the following compounds.
(5 pts.) 1. The molecule SO2 has 3 Infrared and 3 Raman active bands in its spectrum. The molecule is bent (AX2E) and in the C2V point group. Using the Spreadsheet Template CTC2V.xls, prove that this point group is correct for this molecule.
(5 pts.) 2. The molecule CHCl3 has 6 Infrared and 6 Raman active bands in its spectrum. The molecule is roughly tetrahedral in shape, but it is in the C3V point group. Using the Spreadsheet Template CTC3V.xls, prove that this point group is correct for this molecule.
(10 pts.) 3. The molecule SO3 has 3 Infrared and 3 Raman active bands in its spectrum. Is the molecule flat trigonal planar and in the D3H point group. Or, is the molecule trigonal pyramidal and in the C3V point group. Using the Spreadsheet Templates CTC3V.xls and CTD3H.xls, prove which point group is correct for this molecule by matching the number of IR and Raman active bands.
(10 pts.) 4. The square planar ion [PtCl4-1] fits into the D4h point group. Using the Spreadsheet Template ctd4h.xls, determine the number of IR and Raman active bands for this ion.
(10 pts.) 5. Trans MA4B2 octahedral systems fit into the D4h point group. Using the Spreadsheet Template ctd4h.xls, determine the number of IR and Raman active bands for these systems. ion.